Kojic Acid & Kojic Acid dipalmitate

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Kojic Acid & Kojic Acid dipalmitate
Posting date : Mar 22, 2010
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Kojic Acid & Kojic Acid dipalmitate 1. Kojic Acid Chemical name:5-hydroxyl-2-hydroxymethyl-1,4-pyrone. It is a white needle-like crystals. It easily dissolves in water, alcohol & aceton, and slightly dissolves in ethyl acetate, chloroform, etherand pyridine. Kojic acid does not dissolve in benzene. Molecular weight: 142.1 Cas no: 501-30-4 Melting point: 153-156C Molecular formula: C6H6O4 Toxicity test data: LD502500-350Omg/kg. Usages (1) Daily chemicals material: Because Kojic acid can inhibits caseinase activity, then inhibits skin melanin formation, kojic acid and it's derivatives widely used in high-quality skin lightening cosmetics, bath preparation and mouth or teeth care products. Cosmetics containing kojic acid can treat freckle,acne, pigmentation and macula effectively without any toxic and bad results, At present, kojic acid's use level added in cosmetics is to 0.2-1.0 percent. (2) Medicine material: Kojic acid and it's derivatives are used as an important material in antibiotic - cephamycin, anodyne, and antiphlogistic production. (3) Food additive: Kojic acid and it's derivatives work as antiseptic,antioxidant, preservative and color stablizer in meat processing, also act as useful materials of food aromatizer - maltol and ethylmaltol. (4) Preservative and color stablizer of cut-flower: Kojic acid and it's derivatives are added to cut-flower to keep flower colorful and fresh. (5) Film despecking agent and iron ananysis reagent. (6) Non-toxic to person and livestock, pollution-free pesticide ininsecticide production Specification Appearance white or off white crystals Assay: 99.0% min Loss on drying: 0.5% max Residue on ignition: 0.1% max Iron: 10ppm max Heavy metals (Pb): 3ppm max Arsenic: 1ppm max Chlorides: 50ppm max clarity of solution colorless and transparent Pathootens none<(undetected) Melting point: 153 -156C PH: 3.5-5.5 Solubility:Soluble in water Count of bacteria:<300/g Coliform:Negative 2.Kojic Acid dipalmitate Speciality Kojic dipalmitate is modified kojic acid derivative, which not only overcomes the instability to light, heat and metallic ion, but keeps the inhibitory tyrosinase activity and prevents the forming of melanin. Molecular formula: C38H66O6 CAS No: 79725-98-7 Molecular weight: 618.9 Usages Kojic dipalmitate owns stable chemical property. It will not turn yellow for oxidation, metallic ion, illumination and heating. As fat soluble skin whitening agent, it is easier to be absorbed by skin. Specification Appearance white sheet crystals Assay 98.0% min Melting point 92-96°C Loss on drying 0.5% max Residue on ignition 0.5% max Heavy metals 10ppm max Arsenic 2.0ppm max Color reaction of ferric chloride Negative Pathogen bacteria:<300CPU Fungus: <100CPU

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