Basic Information of L-Ascorbyl palmitate USP/BP (Vitamin C palmitate) CAS 137-66-6

Chinese name: L-Ascorbyl Palmitate

Alias: Vitamin C palmitate, Vc palmitate, 6-O-palmitoyl-L-ascorbic acid

English name: L-Ascorbyl palmate

CAS number: 137-66-6

EINECS：205-305-4

Food additive code: E304

Molecular formula: C22H38O7

Molecular weight: 414.53

Physical and chemical properties

Appearance: White to slightly pale yellow crystalline powder, almost odorless

Melting point: 115-118 ℃

Solubility: Extremely difficult to dissolve in water; Easy to dissolve in ethanol, ether, and fats; Oil soluble vitamin C derivatives (ordinary vitamin C is water-soluble, this product is lipophilic, and its biggest feature)

Stability: better heat resistance than L-ascorbic acid; It is prone to oxidation and discoloration when exposed to light or air, and should be stored in a dark sealed environment

The core principle is obtained by the esterification of L-ascorbic acid (vitamin C) with palmitate; Retaining the antioxidant activity of vitamin C while incorporating long-chain fatty acids, it is also oil soluble and can enter the lipid phase to scavenge free radicals. After hydrolysis, vitamin C can be released, which also has a nutritional strengthening effect. 

Main purpose

Food industry (permitted by national standard GB2760)

Edible vegetable oil, fried foods, pastries, instant noodles, margarine, infant formula foods; Antioxidants in the oil system can inhibit oil rancidity.

Cosmetics/skincare ingredients

Oil soluble antioxidant, which can remove free radicals, brighten skin tone, and is used for face cream, essence, and color makeup; It is easier for vitamin C to penetrate the sebum membrane than water-soluble vitamin C.

Medicine and health products

Medicinal excipients, fat soluble antioxidant additives; Protect the active ingredients of oils and fats in the formulation.

Security Information 

Legal food additives, low toxicity, safe for normal and compliant use;

GHS label: Warning

H319: Causes severe eye irritation; Avoid dust contact with eyes;

Not classified as flammable dangerous goods;

Taboo: Strong oxidants, strong bases, accelerate oxidative decomposition.

Packing

500g/Aluminum foil bag; 25kgs/fiber drum

Store in a sealed, dark, cool, and dry place; It is recommended to keep the temperature below 25 ℃ and isolate it from air to prevent oxidation and yellowing.