Whitening agents /anti-winkle kojic acid 501-30-4
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Product Name |
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Synonyms |
5-Hydroxy-2-(hydroxymethyl)-4H-pyran-4-one 5-Hydroxy-2-(hydroxymethyl)-4H-pyran-4-one; |
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CAS |
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Molecular formula |
C6H6O4 |
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Molecular Weight |
142.11 |
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Molecular Structure |
 |
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Physical and Chemical Properties |
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General Description |
Off-white powder |
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Usage |
The Kojic acid and its derivatives are used as whitening agents in the cosmetic industry and can also serve as a preservative and moisturizing effect. | ||
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Packing |
1-5kg with ziplock plastic bag inside,Aluminum foil bag outside. 6-15kg with plastic bag inside,Aluminum foil bag outside,finally with carton box. More than 16kg with plastic bag inside,fiber drum outside according to the extract quantity |
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Storage condition |
Should be kept in sealed package to avoid high temperature and high humidity. |
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Specifications |
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Items |
Standard (BP2005/USP31/EP5) |
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Characteristics |
White crystals or crystalline powder |
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Identification |
Positive Reaction |
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Melting point |
190-192 °C |
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PH |
2.2~2.6 |
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Clarity of Solution |
Clear |
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Color of Solution |
≤BY7 |
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Specific Optical Rotation |
+20.5~+21.5° |
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Copper |
≤ 5 ppm |
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Heavy metals |
≤ 10 ppm |
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Iron |
≤ 2 ppm |
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Oxalic Acid |
≤ 0.2 % |
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Sulphated Ash |
≤ 0.1 % |
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Residue on Ignition |
≤ 0.1 % |
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Organic Volatile Impurities |
Pass USP Test |
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Assay |
99.0~100.0% |
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Loss on drying |
≤ 0.4 % |
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Lead |
≤2ppm |
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Mercury |
≤0.1mg/kg |
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Mesh |
40~80mesh |
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Arsenic |
≤3ppm |
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