Kojic acid CAS#501-30-4

CAS Number: 501-30-4
Chemical Formula: C6H6O4
Synonyms:

5-Hydroxy-2-(hydroxymethyl)-γ-pyrone
4H-Pyran-4-one, 5-hydroxy-2-(hydroxymethyl)-
4H-Pyran-4-one,5-hydroxy-2-(hydroxymethyl)-

Appearance: White Powder

MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)

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Product Details

Kojic acid crystal is prism shape, acicular, colorless. Kojic acid is soluble in water, alcohol, acetone, slightly soluble in ether, ethyl acetate, chloroform and pyridine, insoluble in most other solvent. Crystallization can be in acetone, ethyl acetate solvent , also be in the 150 to 200℃ by vacuum sublimation. The melting point of the reported in the literature is 151 to 154 ℃. 5,7-diethyl kojic acid and its derivatives respectively at 315 nm and 255nm have specific absorption peaks.
Kojic acid is unstable to light and heat, the concentration 0.5% solution of kojic acid at different pH at a temperature of 100℃ treatment for 3h or sun light shined for 5h. The results at pH 5~7 solution become yellow to tan, but did not change much at pH4.
Effect of kojic acid and ferric chloride is special red, this method can be used for kojic acid quantitative. Kojic acid can be reduced fee Lin reagent and ammoniacal silver nitrate and its molecular structure near the carbonyl has a hydroxyl group, and a variety of metal to form a salt and other hydroxyl can generate ether and ester derivatives.

Kojic acid Chemical Properties

Melting point	152-155 °C (lit.)
Boiling point	179.65°C (rough estimate)
density	1.1712 (rough estimate)
refractive index	1.4434 (estimate)
storage temp.	Store below +30°C.
solubility	DMSO (Slightly), Methanol (Slightly, Sonicated)
pka	7.9(at 25℃)
form	Crystalline Powder
color	White to beige-brown
Water Solubility	SOLUBLE
λmax	269nm(CHCl3)(lit.)
Merck	14,5317
BRN	120895
Stability:	Stable. Combustible. Incompatible with strong oxidizing agents.
Major Application	cleaning products cosmetics food and beverages personal care
Cosmetics Ingredients Functions	ANTIOXIDANT BLEACHING
InChI	1S/C6H6O4/c7-2-4-1-5(8)6(9)3-10-4/h1,3,7,9H,2H2
InChIKey	BEJNERDRQOWKJM-UHFFFAOYSA-N
SMILES	OCC1=CC(=O)C(O)=CO1
LogP	-0.640
CAS DataBase Reference	501-30-4(CAS DataBase Reference)
IARC	3 (Vol. 79) 2001
NIST Chemistry Reference	5-Hydroxy-2-(hydroxymethyl)-4h-pyran-4-one(501-30-4)
EPA Substance Registry System	Kojic acid (501-30-4)

Safety Information

Hazard Codes	Xn
Risk Statements	40-68
Safety Statements	22-24/25-36/37-36
WGK Germany	3
RTECS	UQ0875000
HS Code	29329995
Storage Class	11 - Combustible Solids
Hazardous Substances Data	501-30-4(Hazardous Substances Data)

Product Application of Kojic acid CAS#501-30-4

Used in cosmetics, food additives, pharmaceutical etc,Used for quantitative analysis of ferric iron reagent.
1.kojic acid is widely used in food production. In the pas, because of oxidation resistance, it has been used for kojic acid grease to prevent rancidity. Recent reports, kojic acid has sterilization and insect resistance, as food preservatives, preservatives, color protection agent has obvious effect, can replace chemical preservatives, which is widely used in meat dish processing color, fresh fruits and vegetables, antiseptic raw food, but also can be used as cut flowers preservation and conservation agent to extend shelf life. Kojic acid is added in the food, do not influence the taste, aroma and texture and hinder the conversion of nitrite in paired human carcinogenic nitrosamines, which hinder or inhibition of cured meat products upgrading has a very important significance. Agricultural production, kojic acid can be used as biological pesticide, used as an insecticide, and can be used as bio fertilizer, regardless of the spraying or root application, the yield of grain and vegetables income effect is remarkable.

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