Esters Available — Bulk Only

Ascorbyl Palmitate

CAS 137-66-6 · Formula C22H38O7 · MW 414.5 g/mol

A fat-soluble vitamin C ester serving as an oil-phase antioxidant. It is used as an antioxidant and preservative in oils, fats, foods, and pharmaceuticals, and as a source of vitamin C.

Part of Esters
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HS Code
2936.27
At a Glance
Material Family
Esters
Record Type
Pure compound
Primary Role
Preservation
Solubility
Soluble in alcohol, animal oil, and vegetable oil; slightly soluble in water
Functional Roles
ASCORBYL PALMITATE
ANTIOXIDANTFRAGRANCE
Industries Served
Applications & Use Cases
  • Food antioxidant: inhibits oxidation and rancidity in oils and fats
  • Cosmetic antioxidant: fat-soluble vitamin C derivative in skin-care formulations
  • Nutritional fortification: ester source of vitamin C
Physical Properties
Melting Point
Between 107 °C and 117 °C
Solubility
Soluble in alcohol, animal oil, and vegetable oil; slightly soluble in water
Safety & Handling
Full SDS available on request

A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.

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HS / Tariff Classification
Harmonized System (HS) Code — 6-digit international heading
2936 . 27
Chapter 29
Organic chemicals
Heading 29.36
Internationally harmonized (WCO HS)
Subheading 2936.27
6-digit international code — national tariff line adds further digits
Chemical Identity
CAS Number
137-66-6
Molecular Formula
C22H38O7
Molecular Weight
414.5 g/mol
IUPAC Name
[(2S)-2-[(2R)-3,4-dihydroxy-5-oxo-2H-furan-2-yl]-2-hydroxyethyl] hexadecanoate
INCI Name
ASCORBYL PALMITATE
PubChem CID
InChI Key
QAQJMLQRFWZOBN-LAUBAEHRSA-N
Synonyms & Trade Names
ASCORBYL PALMITATE L-Ascorbyl 6-palmitate L-Ascorbic acid 6-palmitate Ascorbyl monopalmitate Ascorbic palmitate L-Ascorbic acid, 6-hexadecanoate L-Ascorbyl palmitate Cetyl ascorbate 6-O-Palmitoyl ascorbate Ascorboyl palmitate Ascorbylpalmitic acid Ascorbyl 6-palmitate Ins no.304 Ascorbyl palmitate [NF] Ascorbyl palmitate (VAN) Palmitoyl L-ascorbic acid Ins-304 Ondascora
Full Description

Ascorbyl palmitate (CAS 137-66-6), a fat-soluble ester of L-ascorbic acid (vitamin C). It is used as an antioxidant and preservative in oils, fats, foods, and pharmaceuticals, and as a source of vitamin C.

Frequently Asked Questions

What is ascorbyl palmitate used for?

Ascorbyl palmitate (CAS 137-66-6) is a fat-soluble ester of L-ascorbic acid used as an antioxidant in oils, fats, and food formulations to inhibit oxidation and rancidity. As a fat-soluble vitamin C derivative it is also formulated into cosmetic skin-care products and used for nutritional fortification. RawSource supplies it in bulk to food, supplement, and personal-care manufacturers.

Is ascorbyl palmitate made from palm oil?

Ascorbyl palmitate is the ester of ascorbic acid (vitamin C) and palmitic acid, the C16 fatty acid. Palmitic acid is commonly sourced from palm or other vegetable oils, so the palmitate portion is typically of vegetable origin. Feedstock sourcing varies by supplier; request a specification and origin statement for a given lot.

What is the difference between ascorbyl palmitate and ascorbic acid?

Ascorbic acid is water-soluble vitamin C; ascorbyl palmitate is its fatty-acid ester, which makes it oil/fat-soluble. This solubility difference is why ascorbyl palmitate is selected as an antioxidant in oil and fat systems where ascorbic acid will not disperse. Both share HS classification 2936.27.

What is the HS code for ascorbyl palmitate?

Ascorbyl palmitate is classified under HS 2936.27, covering vitamin C (ascorbic acid) and its derivatives. CAS is 137-66-6 and the molecular formula is C22H38O7. RawSource provides full identity documentation with each bulk order.

How is bulk ascorbyl palmitate packaged and quoted?

RawSource supplies ascorbyl palmitate in bulk industrial quantities for food, supplement, and cosmetic formulators, typically in fiber drums or sacks. Pricing is quote-based and depends on volume, grade, and delivery terms. Submit a bulk RFQ with your target quantity and required specification for current pricing and lead time.

Disclaimer. Information on this page — including properties, identifiers, hazard, transport (DOT/UN) and tariff (HS) classifications, and applications — is provided for general reference and is compiled from authoritative public sources (e.g. PubChem/ECHA, 49 CFR 172.101, the Harmonized Tariff Schedule). Values are typical and are not a guaranteed specification; the Certificate of Analysis (CoA) for the lot purchased governs. Products are sold for industrial and professional use only. Nothing here is a medical, health, or efficacy claim or advice. Always consult the current Safety Data Sheet (SDS) before handling, storage, transport or disposal, and confirm regulatory status, classification and suitability for your application and jurisdiction. Hazard, transport and tariff classifications must be verified for your specific shipment. RawSource makes no warranty, express or implied, and assumes no liability for use of this information. Trademarks. Third-party trademarks and brand names are the property of their respective owners; any reference is nominative — used only to identify a comparable product — and does not imply affiliation with, sponsorship by, or endorsement by the trademark owner.