Kojic acid (formal name:5-hydroxy-2-hydroxymethyl-1,4-pyrone is a kind of subacid organic compound made inmicrobial fermentation.
Kojic acid is white or off white needle like crystals,easily dissolved in water,
alcohol and acetone; slightly dissolved in ether,ethyl acetate,chlorofrom and pyridine; and undissolved in benzene.
Model Name | kojic acid powder |
Formula | C6H6O4 |
CAS NO. | 501-30-4 |
Appearance | White or off-white crystals |
Text method | HPLC |
Loss on Drying | < 5.0% |
Particle Size | 100% through 80 Mesh |
The molecular weight | 142.11 |
Function | Restrain skin melanin formation |
Application | Used in cosmetics, |
Stock | in stock |
Item | Standard (BP2005/USP31/EP5) | Test Result |
Characteristics | White crystals or crystalline powder | Meet the Requirement |
Identification | Positive Reaction | Meet the Requirement |
Melting Point | 190-192 °C | 191.3 °C |
PH | 2.2~2.6 | 2.49 |
Clarity of Solution | Clear | Meet the Requirement |
Color of Solution | ≤BY7 | < BY7 |
Specific Optical Rotation | +20.5~+21.5° | +21.17° |
Copper | ≤ 5 ppm | <5 ppm |
Heavy metals | ≤ 10 ppm | <10 ppm |
Iron | ≤ 2 ppm | <2 ppm |
Oxalic Acid | ≤ 0.2 % | <0.2 % |
Sulphated Ash | ≤ 0.1 % | <0.1 % |
Residue on Ignition | ≤0.1 % | <0.1% |
Organic Volatile Impurities | Pass USP Test | Meet the Requirement |
Assay | 99.0~100.0% | 99.95% |
Loss on drying | ≤ 0.4 % | <0.4 % |
Lead | ≤2ppm | <2ppm |
Mesh | 40~80mesh | Pass |
Arsenic | ≤3ppm | <3ppm |
1. Kojic acid can inhibit tyrosinase synthesis, so it can largely inhibit the skin melanin formation;
2. Kojic acid is able to eliminate the free radicals in the human body, strengthen the activity of the leucocyte;
3. Kojic acid have ideal effect in easing pain, relieving inflammation and curing many diseases;
1. Applied in Agriculture: kojic acid is used in producing biological pesticides;
2. Applied in Medicine: kojic acid has been used as the an important material of cephalosporin-type antibiotics;
3. Applied in other fields: kojic acid is also used as iron analytical reagent and film spotting agent, etc;
4. Applied in Cosmetics: kojic acid has been widely added into the lotion, face mask, liquid
cream and skin cream. Recommendation usage for cosmetics: 0.2~1.0%;
5. Applied in Food additive: kojic acid work as antiseptic,antioxidant, preservative and color stablizer in meat processing, also act as useful materials of food aromatizer - maltol and
ethylmaltol;
Recommended transportation selections | ||
By Express | By Air Transportation | By Sea Transportation |
Suitable for sample order or <50kg Fast: 3-10 days High shipping cost Door to door service | Suitable for >50kg Fast: 3-7 days Lower than express cost Airport to airport service Professional broker needed | Suitable for > 300kg Slow: 7-45 days Lowest cost Port to port service Professional broker needed |