Shandong Huashang Chemical Co., Ltd. is a high-tech enterprise focused on industry of fine chemicals research and develop, produce and sale. Shandong Huashang Chemical Co., Ltd. is located in Shan Dong Ji Nan China. we have the ability to provide you high quality products. More than 90 % of our products are exported to developed countries and regions such as north America, Europe, Japan, South Korea and the Middle East.
Kojic Acid Dipalmitate
1. Basic Product Information
Product Name: Kojic Acid Dipalmitate
CAS Number: 79725-98-7
Molecular Formula: C38H66O5
Molecular Weight: 602.93
Synonyms: 2-Palmitoyloxy-5-palmitoyloxymethyl-4H-pyran-4-one, Dipalmitoyl kojic acid
Product Category: Cosmetic raw material, skin lightening agent, cosmetic antioxidant, fine organic ester chemical
2. Physical and Chemical Properties
Physical Indicators
- Appearance: White to off-white waxy crystalline powder
- Odor: Odorless or faint mild fatty ester odor
- Solubility: Soluble in oil-phase solvents such as isopropyl myristate, olive oil, mineral oil; insoluble in water, ethanol and methanol
- Melting Point: 92–96 °C
- Density (20 °C): 0.96 g/cm3
- Hygroscopicity: Non-hygroscopic under sealed dry storage
- Aqueous Stability: Stable in neutral oil system; no discoloration compared with kojic acid, good high-temperature stability in cosmetic formulations
Chemical Characteristics
- Molecular Structure: Kojic acid backbone modified with two palmitate ester groups, lipophilic derivative of kojic acid
- Core Functional Mechanism: Inhibits tyrosinase activity to block melanin synthesis; lipophilic ester structure avoids instability and discoloration defects of raw kojic acid
- Oxidation Resistance: Far stronger anti-oxidation performance than water-soluble kojic acid, not easy to turn yellow in cosmetics
- Photostability: Good light stability, rarely degrade under daily UV exposure
- Thermal Stability: Stable below 85 °C; slight ester hydrolysis occurs above melting point to release kojic acid and palmitic acid
- Chemical Compatibility: Compatible with all oil-based cosmetic excipients; incompatible with strong alkaline aqueous solutions and strong oxidants
3. Main Application Fields
- Core Application: Cosmetic Skin Whitening Raw Material
Key oil-soluble lightening additive for cream, lotion, facial oil, sunscreen and body care products; inhibits pigmentation, fades dark spots and brightens skin tone - Cosmetic Antioxidant & Preservative Auxiliary
Suppresses free radical oxidation in oil-phase formulations, extends shelf life of lipid cosmetics - Dermatology Research Reagent
Standard tyrosinase inhibitor for melanocyte metabolism and skin whitening mechanism laboratory research - Daily Chemical Fine Chemical Additive
Whitening active ingredient for high-end personal care and hair care products
4. Platform Category & Product Group Selection Guide
1) Domestic B2B Platform Category
Recommended Path: Other Chemicals / Cosmetic Raw Materials
Reason: It is a dedicated cosmetic active ester raw material, not pharmaceutical or pesticide intermediate.
2) English Product Group Dropdown Options
Recommended Selection: Basic Organic Chemicals
Do NOT select Pharmaceutical Chemicals; it belongs to daily cosmetic chemical raw material rather than human drug bulk material.
3. Standard Foreign Trade Packaging Specification
1kg aluminum foil vacuum bag for lab cosmetic formula test samples; 25kg fiber drum lined with double PE inner bags for bulk cosmetic factory orders; customized packaging specifications are available upon request
5. Quality Specification Table
| Test Item | Standard Requirement |
| CAS Number | 79725-98-7 |
| Molecular Formula | C38H66O5 |
| Appearance | Uniform white waxy powder without yellow discoloration |
| HPLC Purity | Cosmetic Grade ≥99.0% |
| Melting Point | 92–96 °C |
| Water Content (KF Method) | ≤0.20% |
| Free Kojic Acid | ≤0.10% |
| Free Palmitic Acid | ≤0.30% |
| Heavy Metals (Pb) | ≤10 ppm |
| Standard Storage Package | Light-proof sealed aluminum foil bag, 25kg PE lined fiber drum |
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