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.
Xanthophyll
1. Basic Information
Name: Xanthophyll
Alias: Lutein, β,ε-Carotene-3,3'-diol
CAS No.: 127-40-2
Molecular Formula: C40H56O2
Molecular Weight: 568.87
2. Physical and Chemical Properties
Physical Properties
- Appearance: Orange-yellow crystalline powder
- Odor: Odorless natural carotenoid
- Solubility: Soluble in CHCl3, acetone, vegetable oil; slightly soluble in CH3OH, C2H5OH; insoluble in H2O
- Melting Point: 190–192 °C (decomposition)
- Hygroscopicity: Slightly hygroscopic under high humidity
- Aqueous Characteristic: Lipophilic pigment, cannot form uniform aqueous solution without emulsifier
Chemical Properties
- Molecular Structure: Long-chain conjugated polyene carotenoid with two hydroxyl groups at both ring ends
- Antioxidant Property: Conjugated double bonds easily react with oxygen and free radicals, prone to oxidative fading
- Acid-base Stability: Stable under weak neutral environment; degraded rapidly under strong acid, strong alkali or heating
- Thermal Stability: Decomposes and fades above 60 °C; high temperature accelerates oxidation
- Photostability: Extremely sensitive to UV light; long-term illumination causes pigment degradation and color loss
- Compatibility: Incompatible with strong oxidants, metal ions such as Fe3?, Cu2?
3. Main Application Fields
1. Food & Feed Additive (Core Application)
- Natural colorant and nutritional fortifier for baked food, beverage, candy, egg yolk pigmentation additive for poultry feed
- Antioxidant nutrient for eye-health functional food
2. Dietary Supplement Raw Material
Active ingredient of oral eye-protection capsules, relieves visual fatigue and filters blue light damage
3. Cosmetic Raw Material
Natural antioxidant pigment for skin care cream, anti-photoaging formula additive
4. Biochemical Reference Standard
HPLC reference substance for carotenoid detection in plants and animal tissues
4. Quality Specification Table
| Test Item | Standard Index |
| CAS Number | 127-40-2 |
| Molecular Formula | C40H56O2 |
| Appearance | Orange-yellow crystalline powder |
| HPLC Purity | Food Grade ≥90.0%; Standard Grade ≥98.0% |
| Water Content (KF) | ≤0.50% |
| Residue on Ignition | ≤0.10% |
| Heavy Metals (Pb1) | Food grade ≤10 ppm |
| Packaging | Nitrogen-purged amber aluminum foil vacuum bag / food-grade fiber drum |
| Storage Condition | Hermetically sealed in cool dark warehouse below 20 °C; strictly moisture-proof, light-proof and isolated from air oxidants |
| Transportation Requirement | Oxidation-prone natural pigment, cold chain light-proof sealed packaging |
| Shelf Life | 24 months under nitrogen-sealed vacuum storage |
Safety Warning
Low-toxic natural plant pigment. Dust irritates eyes and respiratory tract. Wear dust mask, oil-resistant gloves and protective goggles in ventilated environment. Avoid long-term exposure to air and light to prevent oxidative discoloration. Waste solid can be treated as biodegradable organic waste after harmless treatment.
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