Ascorbyl Palmitate

Ascorbyl Palmitate

Use: As an antioxidant (E 304) for oils and fats in food

Introduction

Synonyms: L-Ascorbic acid 6-palmitate; L-Ascorbic Acid, 6-Hexadecanoate; (S)-2-[(R)-3,4-dihydroxy-5-oxo-2,5-dihydro-2-furyl]-2-hydroxyethyl hexadecanoate

Molecular Formular: C22H38O7

Molecular Weight: 414.54

CAS. No: 137-66-6

Colour: White to slightly yellow

Form: Powder

Odour: Almost odourless

Bulk density: About 0.24g/cm3

Solubility: Insoluble in water, soluble in vegetable oils and ethanol.

Melting point: 107~117℃


Functions and Applications

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StandardItemStandardResultsMethod
BP/Ph.Eur.AppearanceWhite or yellowish-white powderWhite powderOrganoleptic
IdentificationIR or Specific Rotation or Chemical methodPositivePh.Eur.
Appearance of solution Clear and≤BY4Clear and <BY4Ph.Eur.
Assay98.0%~100.5%99.29%Ph.Eur.
Specific Rotation+21.0°~+24.0° +21.98°USP
Loss on Drying≤1.0%0.12%Ph.Eur.
Sulphated ash ≤0.1%0.06%Ph.Eur.
Heavy Metals≤10ppm<10ppmUSP
USPAppearanceA white to yellowish white powderWhite powderOrganoleptic
IdentificationIR or HPLCPositiveUSP
Assay95.0%~100.5%98.39%USP
Specific Rotation+21.0°~+24.0° +21.98°USP
Loss on Drying≤2.0%0.12%Ph.Eur.
Residual solvents≤0.5%ConformsUSP
Residue on Ignition≤0.1%0.06%USP
FCCAppearanceA white or yellow-white powderWhite powderOrganoleptic
IdentificationChemical method or IRPositiveFCC
Assay≥95.0%98.39%USP
Specific Rotation+21.0°~+24.0° +21.98°USP
FCC Loss on Drying≤2.0%0.12%USP
Melting Point107 ℃~117 ℃113.5 ℃~115.0 ℃USP
Residue on Ignition≤0.1%0.06%USP
Lead≤2ppm<2ppmAAS
E304AppearanceWhite or yellowish white solidWhite powderOrganoleptic
AssayMin.98%98.39%USP
Specific Rotation+21.0°~+24.0° +21.98°USP
Loss on Drying≤1.0%0.12%Ph.Eur.
Melting Point107 ℃~117 ℃113.5 ℃~115.0 ℃USP
Sulphated ash≤0.1%0.06%Ph.Eur.
Lead≤2ppm<2ppmAAS
Arsenic≤3ppm<3ppmCh.P.
ECMercury≤0.1ppm<0.1ppmAAS
Cadmium≤1ppm<1ppmAAS
We certify that this batch of Ascorbyl Palmitate conforms to the current BP/USP/FCC/Ph.Eur./E304.


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