{"product_id":"tartrazine-e102-food-grade-yellow-colour-powder-ci-19140-cas-1934-21-0-asd-640","title":"Tartrazine (E102) – Food Grade Yellow Colour Powder | CI 19140, CAS 1934-21-0 | ASD-640","description":"\u003c!--\nProduct: Tartrazine (E 102), C.I. 19140, CAS 1934-21-0\nCatalogue No: ASD-640\nManufacturer: Ausamics Pty Ltd, Melbourne, Australia\nCategory: Biological stains and dyes\nPrimary use: Histological counterstain, spectrophotometric reference, E 102 reference colour\n--\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\"@context\": \"https:\/\/schema.org\", \"@type\": \"Product\", \"name\": \"Tartrazine (E 102), C.I. 19140\", \"sku\": \"ASD-640\", \"mpn\": \"ASD-640\", \"category\": \"Biological Stains and Dyes\", \"alternateName\": [\"Tartrazine\", \"E 102\", \"Acid Yellow 23\", \"CI Food Yellow 4\", \"C.I. 19140\"], \"description\": \"Tartrazine (CAS 1934-21-0, C.I. 19140), water-soluble yellow azo dye with minimum 85 % pure dye content. Used as a histological counterstain, spectrophotometric reference and E 102 reference colour.\", \"brand\": {\"@type\": \"Brand\", \"name\": \"Ausamics\"}, \"manufacturer\": {\"@type\": \"Organization\", \"name\": \"Ausamics Pty Ltd\", \"url\": \"https:\/\/www.ausamics.com.au\"}, \"additionalProperty\": [{\"@type\": \"PropertyValue\", \"name\": \"CAS number\", \"value\": \"1934-21-0\"}, {\"@type\": \"PropertyValue\", \"name\": \"Colour Index number\", \"value\": \"19140\"}, {\"@type\": \"PropertyValue\", \"name\": \"EC number\", \"value\": \"217-699-5\"}, {\"@type\": \"PropertyValue\", \"name\": \"Molecular formula\", \"value\": \"C16H9N4Na3O9S2\"}, {\"@type\": \"PropertyValue\", \"name\": \"Molecular weight\", \"value\": \"534.36 g\/mol\"}, {\"@type\": \"PropertyValue\", \"name\": \"Dye content\", \"value\": \"Min. 85 %\"}, {\"@type\": \"PropertyValue\", \"name\": \"Absorption maximum\", \"value\": \"approx. 426 nm (water)\"}]}\n\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Is tartrazine the same as E 102 and FD\u0026C Yellow No. 5?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Tartrazine is the chemical name. E 102 is its European food-additive number, and FD\u0026C Yellow No. 5 is the US name for FDA-certified batches. This product meets the E 102 purity limits on the batch certificate; it is not an FDA-certified FD\u0026C batch.\"}}, {\"@type\": \"Question\", \"name\": \"How do I make a stock solution?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Dissolve 1.0 g in about 80 mL of purified water, stir until clear and make up to 100 mL to give a 1 % w\/v solution. Tartrazine is freely soluble, so no heating is needed.\"}}, {\"@type\": \"Question\", \"name\": \"What wavelength should I use for absorbance measurements?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Tartrazine absorbs most strongly at about 426 nm in water. Use this wavelength for calibration curves and dye-content checks.\"}}, {\"@type\": \"Question\", \"name\": \"Does tartrazine need special storage?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Store at 15–25 °C in a dry place, tightly closed and away from sunlight. Shelf life is 36 months from manufacture under these conditions.\"}}, {\"@type\": \"Question\", \"name\": \"Can tartrazine cause sensitisation?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Tartrazine is classified by some suppliers as a skin sensitiser. Wear gloves and avoid breathing dust when weighing the powder.\"}}]}\n\u003c\/script\u003e\n\u003cstyle\u003e\n.aus-nutrient-product{font-family:\"Segoe UI\",system-ui,-apple-system,Arial,sans-serif;color:#1d2935;max-width:1200px;margin:0 auto;line-height:1.6;font-size:15px}\n.aus-nutrient-product *{box-sizing:border-box}\n.aus-nutrient-product .tab-radio{position:absolute;opacity:0;pointer-events:none}\n.aus-nutrient-product .tab-labels{display:flex;flex-wrap:wrap;gap:6px;border-bottom:2px solid #2d5a3d;margin:0 0 0 0}\n.aus-nutrient-product .tab-labels label{cursor:pointer;padding:11px 20px;background:#f0f4f1;color:#2d5a3d;font-weight:600;border-radius:10px 10px 0 0;border:1px solid #d8e1e8;border-bottom:none;font-size:14px}\n.aus-nutrient-product .tab-panel{display:none;padding:26px 4px 10px}\n#asd640-t1:checked~.tab-labels label[for=asd640-t1],#asd640-t2:checked~.tab-labels label[for=asd640-t2],#asd640-t3:checked~.tab-labels label[for=asd640-t3],#asd640-t4:checked~.tab-labels 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.scale-lbl{display:flex;justify-content:space-between;font-size:12px;color:#52606d}\n.aus-nutrient-product .swatch{display:inline-block;width:14px;height:14px;border-radius:3px;vertical-align:-2px;margin-right:6px;border:1px solid rgba(0,0,0,.15)}\n.aus-nutrient-product .ghs{display:flex;align-items:center;gap:14px;margin:6px 0 10px}\n.aus-nutrient-product .ghs svg{width:64px;height:64px;flex:none}\n\u003c\/style\u003e\n\u003cdiv class=\"aus-nutrient-product\"\u003e\n\u003cinput type=\"radio\" name=\"asd640-tabs\" id=\"asd640-t1\" class=\"tab-radio\" checked\u003e\n\u003cinput type=\"radio\" name=\"asd640-tabs\" id=\"asd640-t2\" class=\"tab-radio\"\u003e\n\u003cinput type=\"radio\" name=\"asd640-tabs\" id=\"asd640-t3\" class=\"tab-radio\"\u003e\n\u003cinput type=\"radio\" name=\"asd640-tabs\" id=\"asd640-t4\" class=\"tab-radio\"\u003e\n\u003cdiv class=\"tab-labels\"\u003e\n\u003clabel for=\"asd640-t1\"\u003eProduct Description\u003c\/label\u003e\u003clabel for=\"asd640-t2\"\u003eTechnical Data\u003c\/label\u003e\u003clabel for=\"asd640-t3\"\u003eSafety Data\u003c\/label\u003e\u003clabel for=\"asd640-t4\"\u003eQuality \u0026amp; COA\u003c\/label\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tab-panels\"\u003e\n\n\u003cdiv class=\"tab-panel p1\"\u003e\n\u003cdiv class=\"hero\"\u003e\u003cdiv class=\"hero-grid\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"eyebrow\"\u003eBiological Stains \u0026amp; Dyes · C.I. 19140\u003c\/span\u003e\n\u003ch1\u003eTartrazine (E 102)\u003c\/h1\u003e\n\u003cp class=\"subtitle\"\u003eWater-soluble yellow azo dye for histological counterstaining, spectrophotometry, teaching and E 102 colour reference work.\u003c\/p\u003e\n\u003cdiv class=\"badges\"\u003e\n\u003cspan class=\"badge b-solid\"\u003eCat. No. ASD-640\u003c\/span\u003e\u003cspan class=\"badge b-outline\"\u003eCAS 1934-21-0\u003c\/span\u003e\u003cspan class=\"badge b-outline\"\u003eDye content ≥ 85 %\u003c\/span\u003e\u003cspan class=\"badge b-green\"\u003eλmax ≈ 426 nm\u003c\/span\u003e\u003cspan class=\"badge b-gold\"\u003eFood-grade E 102\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"note-green\"\u003e\n\u003cstrong\u003eAlso known as:\u003c\/strong\u003e Acid Yellow 23, CI Food Yellow 4, Hydrazine Yellow. Sold in the US as FD\u0026amp;C Yellow No. 5 when FDA-certified.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003ch4\u003eAt a Glance\u003c\/h4\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cspan\u003eFormula\u003c\/span\u003e\u003cstrong\u003eC₁₆H₉N₄Na₃O₉S₂\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cspan\u003eMol. weight\u003c\/span\u003e\u003cstrong\u003e534.36 g\/mol\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cspan\u003eAppearance\u003c\/span\u003e\u003cstrong\u003eOrange powder\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cspan\u003e1 % solution\u003c\/span\u003e\u003cstrong\u003eLemon yellow\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cspan\u003eSolubility (water)\u003c\/span\u003e\u003cstrong\u003eFreely soluble\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cspan\u003eBatch dye content\u003c\/span\u003e\u003cstrong\u003e85.26 %\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\n\u003cdiv class=\"main-grid\"\u003e\n\u003cdiv\u003e\n\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eTartrazine is the trisodium salt of a pyrazolone azo dye. Its two sulfonate groups and one carboxylate group make it highly water-soluble and anionic. The powder is orange, and dilute solutions are a clear lemon yellow with an absorption maximum near 426 nm.\u003c\/p\u003e\n\u003cp\u003eIn the laboratory, tartrazine is used as a yellow acid counterstain, a stable absorbance reference and a teaching dye. It is also the reference colour for E 102 work in food-colour analysis.\u003c\/p\u003e\n\u003cp class=\"muted\"\u003eFor laboratory, research, education and quality-control use. Not intended for human or veterinary therapeutic use, diagnosis, or direct consumption. Food-grade (E 102) material. For food-industry supply, contact Ausamics for suitability and regulatory documentation.\u003c\/p\u003e\n\n\u003ch3\u003eColour at a Glance\u003c\/h3\u003e\n\u003cp\u003e\u003cspan class=\"swatch\" style=\"background:#e8721c\"\u003e\u003c\/span\u003e\u003cstrong\u003ePowder\u003c\/strong\u003e is orange to orange-red. \u003cspan class=\"swatch\" style=\"background:#f6e11e\"\u003e\u003c\/span\u003e\u003cstrong\u003eSolution\u003c\/strong\u003e is lemon yellow. Colour intensity rises in direct proportion to concentration, which makes tartrazine a good Beer–Lambert teaching dye.\u003c\/p\u003e\n\u003cdiv class=\"scale\"\u003e\n\u003cspan style=\"background:#fffbe0\"\u003e\u003c\/span\u003e\u003cspan style=\"background:#fff59a\"\u003e\u003c\/span\u003e\u003cspan style=\"background:#fbec55\"\u003e\u003c\/span\u003e\u003cspan style=\"background:#f6e11e\"\u003e\u003c\/span\u003e\u003cspan style=\"background:#f2c40f\"\u003e\u003c\/span\u003e\u003cspan style=\"background:#e8721c\"\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"scale-lbl\"\u003e\n\u003cspan\u003edilute solution\u003c\/span\u003e\u003cspan\u003epowder\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eKey Applications\u003c\/h3\u003e\n\u003cdiv class=\"cards\"\u003e\n\u003cdiv class=\"card c1\"\u003e\n\u003cstrong\u003eHistology\u003c\/strong\u003eYellow counterstain, including Lendrum's phloxine–tartrazine method for viral inclusion bodies and Paneth cell granules.\u003c\/div\u003e\n\u003cdiv class=\"card c2\"\u003e\n\u003cstrong\u003eOptical Clearing Research\u003c\/strong\u003eWater-soluble absorbing dye studied for making biological tissue optically transparent in imaging research.\u003c\/div\u003e\n\u003cdiv class=\"card c3\"\u003e\n\u003cstrong\u003eSpectrophotometry\u003c\/strong\u003eStable yellow dye (λmax ≈ 426 nm) for Beer–Lambert calibration and absorbance teaching.\u003c\/div\u003e\n\u003cdiv class=\"card c1\"\u003e\n\u003cstrong\u003eFood Colour QC\u003c\/strong\u003eReference material for E 102 identification, HPLC and colour-matching work.\u003c\/div\u003e\n\u003cdiv class=\"card c2\"\u003e\n\u003cstrong\u003eEducation\u003c\/strong\u003eIntense, water-soluble colour for chromatography, colour-mixing and diffusion practicals.\u003c\/div\u003e\n\u003cdiv class=\"card c3\"\u003e\n\u003cstrong\u003eFormulation Development\u003c\/strong\u003eYellow colourant for prototype buffers, gels and visual tracer solutions in research.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eAdvantages \u0026amp; Considerations\u003c\/h3\u003e\n\u003cdiv class=\"two\"\u003e\n\u003cdiv class=\"adv\"\u003e\n\u003cstrong\u003eAdvantages\u003c\/strong\u003e\u003cul\u003e\n\u003cli\u003ePure dye content ≥ 85 % (current batch 85.26 %)\u003c\/li\u003e\n\u003cli\u003eMeets the E 102 purity limits on the batch certificate\u003c\/li\u003e\n\u003cli\u003eVery low heavy metals: lead and arsenic below 1 ppm\u003c\/li\u003e\n\u003cli\u003eFreely water-soluble; no heating needed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"con\"\u003e\n\u003cstrong\u003eConsiderations\u003c\/strong\u003e\u003cul\u003e\n\u003cli\u003eNot an FDA-certified FD\u0026amp;C Yellow No. 5 batch\u003c\/li\u003e\n\u003cli\u003eMay cause skin sensitisation (H317); wear gloves\u003c\/li\u003e\n\u003cli\u003eFades under strong oxidants and prolonged strong light\u003c\/li\u003e\n\u003cli\u003eAvoid creating dust when weighing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eSpecification Summary\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePure dye content (E 1 %, 1 cm at 426 nm)\u003c\/td\u003e\n\u003ctd\u003eMin. 85.0 %\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAppearance\u003c\/td\u003e\n\u003ctd\u003eOrange to orange-red powder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHue of 1 % solution\u003c\/td\u003e\n\u003ctd\u003eLemon yellow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLoss on drying at 135 °C (as sodium salts)\u003c\/td\u003e\n\u003ctd\u003eMax. 15.0 %\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMoisture at 110 °C\u003c\/td\u003e\n\u003ctd\u003eMax. 2.0 %\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater-insoluble matter\u003c\/td\u003e\n\u003ctd\u003eMax. 0.20 %\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSubsidiary colouring matters\u003c\/td\u003e\n\u003ctd\u003eMax. 1.0 %\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrganic compounds other than colouring matters\u003c\/td\u003e\n\u003ctd\u003eMax. 0.5 %\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUnsulfonated primary aromatic amines (as aniline)\u003c\/td\u003e\n\u003ctd\u003eMax. 0.01 %\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEther-extractable matter\u003c\/td\u003e\n\u003ctd\u003eMax. 0.2 %\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eArsenic (As)\u003c\/td\u003e\n\u003ctd\u003eMax. 1 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLead (Pb)\u003c\/td\u003e\n\u003ctd\u003eMax. 1 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury (Hg)\u003c\/td\u003e\n\u003ctd\u003eMax. 0.05 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCadmium (Cd)\u003c\/td\u003e\n\u003ctd\u003eMax. 0.1 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChromium (Cr)\u003c\/td\u003e\n\u003ctd\u003eMax. 2 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCopper (Cu)\u003c\/td\u003e\n\u003ctd\u003eMax. 30 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZinc (Zn)\u003c\/td\u003e\n\u003ctd\u003eMax. 50 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeavy metals (as Pb)\u003c\/td\u003e\n\u003ctd\u003eMax. 5 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs tartrazine the same as E 102 and FD\u0026amp;C Yellow No. 5?\u003c\/strong\u003e\u003cbr\u003eTartrazine is the chemical name. E 102 is its European food-additive number, and FD\u0026amp;C Yellow No. 5 is the US name for FDA-certified batches. This product meets the E 102 purity limits on the batch certificate; it is not an FDA-certified FD\u0026amp;C batch.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I make a stock solution?\u003c\/strong\u003e\u003cbr\u003eDissolve 1.0 g in about 80 mL of purified water, stir until clear and make up to 100 mL to give a 1 % w\/v solution. Tartrazine is freely soluble, so no heating is needed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat wavelength should I use for absorbance measurements?\u003c\/strong\u003e\u003cbr\u003eTartrazine absorbs most strongly at about 426 nm in water. Use this wavelength for calibration curves and dye-content checks.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes tartrazine need special storage?\u003c\/strong\u003e\u003cbr\u003eStore at 15–25 °C in a dry place, tightly closed and away from sunlight. Shelf life is 36 months from manufacture under these conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan tartrazine cause sensitisation?\u003c\/strong\u003e\u003cbr\u003eTartrazine is classified by some suppliers as a skin sensitiser. Wear gloves and avoid breathing dust when weighing the powder.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cdiv class=\"side-box side-white\"\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eCatalogue No.\u003c\/td\u003e\n\u003ctd\u003eASD-640\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eC.I. number\u003c\/td\u003e\n\u003ctd\u003e19140\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCAS \/ EC\u003c\/td\u003e\n\u003ctd\u003e1934-21-0 \/ 217-699-5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eE number\u003c\/td\u003e\n\u003ctd\u003eE 102\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFormula\u003c\/td\u003e\n\u003ctd\u003eC₁₆H₉N₄Na₃O₉S₂\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMol. weight\u003c\/td\u003e\n\u003ctd\u003e534.36 g\/mol\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDye content\u003c\/td\u003e\n\u003ctd\u003eMin. 85 % (E 1 %, 426 nm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eλmax\u003c\/td\u003e\n\u003ctd\u003e≈ 426 nm (water)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage\u003c\/td\u003e\n\u003ctd\u003e15–25 °C, dry, dark, tightly closed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShelf life\u003c\/td\u003e\n\u003ctd\u003e36 months from manufacture\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDocuments\u003c\/td\u003e\n\u003ctd\u003eTDS, SDS; batch COA on request\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"side-box side-green\"\u003e\n\u003ch4\u003eApplications\u003c\/h4\u003e\n\u003cul style=\"margin:0;padding-left:18px;font-size:14px\"\u003e\n\u003cli\u003ePhloxine–tartrazine counterstain\u003c\/li\u003e\n\u003cli\u003eOptical clearing research\u003c\/li\u003e\n\u003cli\u003eSpectrophotometry standard\u003c\/li\u003e\n\u003cli\u003eChemistry and biology teaching\u003c\/li\u003e\n\u003cli\u003eE 102 reference and QC\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"side-box side-gold\"\u003e\n\u003ch4\u003eStock Solution (1 % w\/v)\u003c\/h4\u003e\n\u003col class=\"steps\"\u003e\n\u003cli\u003eWeigh 1.0 g of tartrazine.\u003c\/li\u003e\n\u003cli\u003eAdd to about 80 mL of purified water.\u003c\/li\u003e\n\u003cli\u003eStir until fully dissolved; no heating is needed.\u003c\/li\u003e\n\u003cli\u003eMake up to 100 mL with purified water.\u003c\/li\u003e\n\u003cli\u003eStore in a closed bottle at room temperature, away from light.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"side-box side-white\"\u003e\n\u003ch4\u003eStorage \u0026amp; Stability\u003c\/h4\u003e\n\u003cp style=\"margin:0;font-size:14px\"\u003eStore at 15–25 °C in a dry place, tightly closed and protected from sunlight, heat and moisture. Shelf life is 36 months from the date of manufacture under these conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"footer-note\"\u003eAusamics Pty Ltd provides this information in good faith. Users are responsible for validating this product for their own methods and regulatory requirements. Ausamics Pty Ltd does not warrant suitability for any specific application unless expressly agreed in writing.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"tab-panel p2\"\u003e\n\u003cdiv class=\"doc-head\"\u003e\n\u003ch2\u003eTechnical Data Sheet — Tartrazine\u003c\/h2\u003e\n\u003cspan\u003eTDS-ASD-640 · Rev 1.0 · November 2026\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e1. Identification\u003c\/div\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemical name\u003c\/td\u003e\n\u003ctd\u003eTrisodium 5-oxo-1-(4-sulfonatophenyl)-4-[(4-sulfonatophenyl)hydrazono]-3-pyrazolecarboxylate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSynonyms\u003c\/td\u003e\n\u003ctd\u003eTartrazine; Acid Yellow 23; CI Food Yellow 4; Hydrazine Yellow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eC.I. number\u003c\/td\u003e\n\u003ctd\u003e19140\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eE number\u003c\/td\u003e\n\u003ctd\u003eE 102\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCAS number\u003c\/td\u003e\n\u003ctd\u003e1934-21-0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEC number\u003c\/td\u003e\n\u003ctd\u003e217-699-5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMolecular formula\u003c\/td\u003e\n\u003ctd\u003eC₁₆H₉N₄Na₃O₉S₂\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMolecular weight\u003c\/td\u003e\n\u003ctd\u003e534.36 g\/mol\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDye class\u003c\/td\u003e\n\u003ctd\u003ePyrazolone monoazo, anionic (acid) dye\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cdiv class=\"sec\"\u003e2. Intended Use\u003c\/div\u003e\n\u003cp\u003eHistological counterstain, spectrophotometric reference dye, teaching reagent and E 102 reference colour. For laboratory, research, education and quality-control use. Not intended for human or veterinary therapeutic use, diagnosis, or direct consumption.\u003c\/p\u003e\n\u003cdiv class=\"sec\"\u003e3. Mode of Action\u003c\/div\u003e\n\u003cp\u003eThe sulfonate and carboxylate groups make tartrazine strongly anionic, so it binds positively charged tissue proteins in acidic stains. Its azo–pyrazolone chromophore absorbs blue light at about 426 nm, which gives the yellow colour.\u003c\/p\u003e\n\u003cdiv class=\"sec\"\u003e4. Physical \u0026amp; Chemical Properties\u003c\/div\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eAppearance\u003c\/td\u003e\n\u003ctd\u003eOrange to orange-red powder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColour of 1 % aqueous solution\u003c\/td\u003e\n\u003ctd\u003eLemon yellow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAbsorption maximum (λmax)\u003c\/td\u003e\n\u003ctd\u003eapprox. 426 nm in water\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolubility\u003c\/td\u003e\n\u003ctd\u003eFreely soluble in water; slightly soluble in ethanol\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMoisture at 110 °C\u003c\/td\u003e\n\u003ctd\u003eMax. 2.0 %\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLight and heat\u003c\/td\u003e\n\u003ctd\u003eGood stability in normal laboratory conditions; protect from sunlight, heat and moisture\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cdiv class=\"sec\"\u003e5. Specifications\u003c\/div\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePure dye content (E 1 %, 1 cm at 426 nm)\u003c\/td\u003e\n\u003ctd\u003eMin. 85.0 %\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAppearance\u003c\/td\u003e\n\u003ctd\u003eOrange to orange-red powder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHue of 1 % solution\u003c\/td\u003e\n\u003ctd\u003eLemon yellow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLoss on drying at 135 °C (as sodium salts)\u003c\/td\u003e\n\u003ctd\u003eMax. 15.0 %\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMoisture at 110 °C\u003c\/td\u003e\n\u003ctd\u003eMax. 2.0 %\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater-insoluble matter\u003c\/td\u003e\n\u003ctd\u003eMax. 0.20 %\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSubsidiary colouring matters\u003c\/td\u003e\n\u003ctd\u003eMax. 1.0 %\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrganic compounds other than colouring matters\u003c\/td\u003e\n\u003ctd\u003eMax. 0.5 %\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUnsulfonated primary aromatic amines (as aniline)\u003c\/td\u003e\n\u003ctd\u003eMax. 0.01 %\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEther-extractable matter\u003c\/td\u003e\n\u003ctd\u003eMax. 0.2 %\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eArsenic (As)\u003c\/td\u003e\n\u003ctd\u003eMax. 1 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLead (Pb)\u003c\/td\u003e\n\u003ctd\u003eMax. 1 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury (Hg)\u003c\/td\u003e\n\u003ctd\u003eMax. 0.05 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCadmium (Cd)\u003c\/td\u003e\n\u003ctd\u003eMax. 0.1 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChromium (Cr)\u003c\/td\u003e\n\u003ctd\u003eMax. 2 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCopper (Cu)\u003c\/td\u003e\n\u003ctd\u003eMax. 30 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZinc (Zn)\u003c\/td\u003e\n\u003ctd\u003eMax. 50 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeavy metals (as Pb)\u003c\/td\u003e\n\u003ctd\u003eMax. 5 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv class=\"sec\"\u003e6. Solution Preparation\u003c\/div\u003e\n\u003cp\u003eStock solution (1 % w\/v): dissolve 1.0 g in about 80 mL purified water and make up to 100 mL. Dilute for use according to your method.\u003c\/p\u003e\n\u003cdiv class=\"sec\"\u003e7. Storage \u0026amp; Shelf Life\u003c\/div\u003e\n\u003cp\u003e15–25 °C, dry, tightly closed, protected from sunlight, heat and moisture. Shelf life 36 months from manufacture.\u003c\/p\u003e\n\u003cdiv class=\"sec\"\u003e8. References\u003c\/div\u003e\n\u003col class=\"muted\"\u003e\n\u003cli\u003eCommission Regulation (EU) No 231\/2012, Annex: E 102 Tartrazine. Specifications for food additives.\u003c\/li\u003e\n\u003cli\u003eFAO\/WHO JECFA. Tartrazine: Combined Compendium of Food Additive Specifications.\u003c\/li\u003e\n\u003cli\u003eEFSA ANS Panel (2009). Scientific Opinion on the re-evaluation of tartrazine (E 102). EFSA Journal 7(11):1331.\u003c\/li\u003e\n\u003cli\u003eLendrum A.C. (1947). The phloxin-tartrazine method as a general histological stain and for the demonstration of inclusion bodies. J. Pathol. Bacteriol. 59:399–404.\u003c\/li\u003e\n\u003cli\u003eOu Z. et al. (2024). Achieving optical transparency in live animals with absorbing molecules. Science 385:eadm6869.\u003c\/li\u003e\n\u003cli\u003eHorobin R.W., Kiernan J.A. (eds) (2002). Conn's Biological Stains, 10th ed. BIOS Scientific Publishers, Oxford.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"tab-panel p3\"\u003e\n\u003cdiv class=\"doc-head\"\u003e\n\u003ch2\u003eSafety Data Summary — Tartrazine\u003c\/h2\u003e\n\u003cspan\u003eSDS-ASD-640 · Rev 1.0 · November 2026 · Full 16-section SDS available on request\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003eHazard Classification (GHS)\u003c\/div\u003e\n\u003cdiv class=\"ghs\"\u003e\n\u003csvg viewbox=\"0 0 100 100\" role=\"img\" aria-label=\"GHS07 exclamation mark pictogram\"\u003e\u003cpolygon points=\"50,3 97,50 50,97 3,50\" fill=\"#fff\" stroke=\"#e00000\" stroke-width=\"7\"\u003e\u003c\/polygon\u003e\u003crect x=\"45\" y=\"24\" width=\"10\" height=\"36\" rx=\"4\" fill=\"#000\"\u003e\u003c\/rect\u003e\u003ccircle cx=\"50\" cy=\"71\" r=\"6\" fill=\"#000\"\u003e\u003c\/circle\u003e\u003c\/svg\u003e\u003cdiv\u003e\n\u003cstrong\u003eSignal word: Warning\u003c\/strong\u003e\u003cbr\u003eSkin sensitisation, Category 1\u003cbr\u003e\u003cstrong\u003eH317\u003c\/strong\u003e May cause an allergic skin reaction.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003ePrecautionary statements:\u003c\/strong\u003e P261 Avoid breathing dust. P272 Contaminated work clothing should not be allowed out of the workplace. P280 Wear protective gloves. P302+P352 If on skin: wash with plenty of water. P333+P313 If skin irritation or rash occurs: get medical advice. P501 Dispose of contents and container in accordance with local regulations.\u003c\/p\u003e\n\u003cdiv class=\"sec\"\u003eHandling \u0026amp; Protection\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003eAvoid creating and breathing dust. Use with adequate ventilation.\u003c\/li\u003e\n\u003cli\u003eWear nitrile gloves, laboratory coat and safety glasses.\u003c\/li\u003e\n\u003cli\u003eThe dye stains skin and surfaces; clean spills promptly with water.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"sec\"\u003eFirst Aid\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInhalation:\u003c\/strong\u003e Move to fresh air. Seek medical advice if breathing symptoms occur.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSkin:\u003c\/strong\u003e Wash with plenty of soap and water. Get medical advice if a rash occurs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEyes:\u003c\/strong\u003e Rinse with water for several minutes. Seek medical advice if irritation persists.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIngestion:\u003c\/strong\u003e Rinse mouth. Seek medical advice if you feel unwell.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"muted\"\u003ePoisons Information Centre (Australia): 13 11 26 · Emergency: 000\u003c\/p\u003e\n\u003cdiv class=\"sec\"\u003eStorage \u0026amp; Disposal\u003c\/div\u003e\n\u003cp\u003eStore at 15–25 °C, dry, tightly closed and protected from light. Dispose of according to local regulations.\u003c\/p\u003e\n\u003cdiv class=\"sec\"\u003eTransport\u003c\/div\u003e\n\u003cp\u003eNot regulated as dangerous goods for road (ADG), sea (IMDG) or air (IATA) transport.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"tab-panel p4\"\u003e\n\u003cdiv class=\"doc-head\"\u003e\n\u003ch2\u003eQuality \u0026amp; Certificate of Analysis\u003c\/h2\u003e\n\u003cspan\u003eASD-640 · Batch-specific COA available on request\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp\u003eEach batch is supplied with traceable manufacturer test data. A batch-specific Certificate of Analysis is available on request. Please quote the batch number printed on the label.\u003c\/p\u003e\n\u003cdiv class=\"sec\"\u003eTypical Batch Results\u003c\/div\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eTest\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eResult\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePure dye content (E 1 %, 1 cm at 426 nm)\u003c\/td\u003e\n\u003ctd\u003eMin. 85.0 %\u003c\/td\u003e\n\u003ctd\u003e85.26 %\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAppearance\u003c\/td\u003e\n\u003ctd\u003eOrange to orange-red powder\u003c\/td\u003e\n\u003ctd\u003eOrange-reddish powder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHue of 1 % solution\u003c\/td\u003e\n\u003ctd\u003eLemon yellow\u003c\/td\u003e\n\u003ctd\u003eLemon yellow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLoss on drying at 135 °C (as sodium salts)\u003c\/td\u003e\n\u003ctd\u003eMax. 15.0 %\u003c\/td\u003e\n\u003ctd\u003e12.95 %\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMoisture at 110 °C\u003c\/td\u003e\n\u003ctd\u003eMax. 2.0 %\u003c\/td\u003e\n\u003ctd\u003e0.92 %\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater-insoluble matter\u003c\/td\u003e\n\u003ctd\u003eMax. 0.20 %\u003c\/td\u003e\n\u003ctd\u003e0.08 %\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSubsidiary colouring matters\u003c\/td\u003e\n\u003ctd\u003eMax. 1.0 %\u003c\/td\u003e\n\u003ctd\u003e0.42 %\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrganic compounds other than colouring matters\u003c\/td\u003e\n\u003ctd\u003eMax. 0.5 %\u003c\/td\u003e\n\u003ctd\u003e0.38 %\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUnsulfonated primary aromatic amines (as aniline)\u003c\/td\u003e\n\u003ctd\u003eMax. 0.01 %\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 0.01 %\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEther-extractable matter\u003c\/td\u003e\n\u003ctd\u003eMax. 0.2 %\u003c\/td\u003e\n\u003ctd\u003e0.08 %\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eArsenic (As)\u003c\/td\u003e\n\u003ctd\u003eMax. 1 ppm\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 1 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLead (Pb)\u003c\/td\u003e\n\u003ctd\u003eMax. 1 ppm\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 1 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury (Hg)\u003c\/td\u003e\n\u003ctd\u003eMax. 0.05 ppm\u003c\/td\u003e\n\u003ctd\u003e0.005 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCadmium (Cd)\u003c\/td\u003e\n\u003ctd\u003eMax. 0.1 ppm\u003c\/td\u003e\n\u003ctd\u003e0.04 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChromium (Cr)\u003c\/td\u003e\n\u003ctd\u003eMax. 2 ppm\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 1 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCopper (Cu)\u003c\/td\u003e\n\u003ctd\u003eMax. 30 ppm\u003c\/td\u003e\n\u003ctd\u003e3 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZinc (Zn)\u003c\/td\u003e\n\u003ctd\u003eMax. 50 ppm\u003c\/td\u003e\n\u003ctd\u003e18 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeavy metals (as Pb)\u003c\/td\u003e\n\u003ctd\u003eMax. 5 ppm\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 5 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp class=\"muted\"\u003eResults as reported on the manufacturer's certificate of analysis dated 19\/10\/2026.\u003c\/p\u003e\n\u003cdiv class=\"footer-note\"\u003eThe results reported in a Certificate of Analysis apply only to the batch identified on it. A certificate may not be reproduced except in full without prior written approval from Ausamics Pty Ltd. The user is responsible for determining the suitability of this product for their intended application and for ensuring its proper use, handling, and storage. Ausamics Pty Ltd does not warrant the suitability or performance of this product for any specific application unless expressly agreed in writing. To the extent permitted by applicable law, Ausamics Pty Ltd accepts no liability for loss or damage arising from improper use or handling of this product.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"AuSaMicS","offers":[{"title":"25 g","offer_id":51031924572415,"sku":"ASD-640-25G","price":19.0,"currency_code":"AUD","in_stock":true},{"title":"100 g","offer_id":51031924605183,"sku":"ASD-640-100G","price":29.0,"currency_code":"AUD","in_stock":true},{"title":"250 g","offer_id":51031924637951,"sku":"ASD-640-250G","price":45.0,"currency_code":"AUD","in_stock":true},{"title":"500 g","offer_id":51031924670719,"sku":"ASD-640-500G","price":69.0,"currency_code":"AUD","in_stock":true},{"title":"1 kg","offer_id":51031924703487,"sku":"ASD-640-1KG","price":109.0,"currency_code":"AUD","in_stock":true},{"title":"5 kg","offer_id":51031924736255,"sku":"ASD-640-5KG","price":399.0,"currency_code":"AUD","in_stock":true}],"url":"https:\/\/ausamics.com.au\/products\/tartrazine-e102-food-grade-yellow-colour-powder-ci-19140-cas-1934-21-0-asd-640","provider":"AuSaMicS","version":"1.0","type":"link"}