Ascorbyl Palmitate

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

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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

Standard	Item	Standard	Results	Method
BP/Ph.Eur.	Appearance	White or yellowish-white powder	White powder	Organoleptic
	Identification	IR or Specific Rotation or Chemical method	Positive	Ph.Eur.
	Appearance of solution Clear and	≤BY4	Clear and <BY4	Ph.Eur.
	Assay	98.0%~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	<10ppm	USP
USP	Appearance	A white to yellowish white powder	White powder	Organoleptic
	Identification	IR or HPLC	Positive	USP
	Assay	95.0%~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%	Conforms	USP
	Residue on Ignition	≤0.1%	0.06%	USP
FCC	Appearance	A white or yellow-white powder	White powder	Organoleptic
	Identification	Chemical method or IR	Positive	FCC
	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 Point	107 ℃~117 ℃	113.5 ℃~115.0 ℃	USP
	Residue on Ignition	≤0.1%	0.06%	USP
	Lead	≤2ppm	<2ppm	AAS
E304	Appearance	White or yellowish white solid	White powder	Organoleptic
	Assay	Min.98%	98.39%	USP
	Specific Rotation	+21.0°~+24.0° 	+21.98°	USP
	Loss on Drying	≤1.0%	0.12%	Ph.Eur.
	Melting Point	107 ℃~117 ℃	113.5 ℃~115.0 ℃	USP
	Sulphated ash	≤0.1%	0.06%	Ph.Eur.
	Lead	≤2ppm	<2ppm	AAS
	Arsenic	≤3ppm	<3ppm	Ch.P.
EC	Mercury	≤0.1ppm	<0.1ppm	AAS
EC	Cadmium	≤1ppm	<1ppm	AAS
We certify that this batch of Ascorbyl Palmitate conforms to the current BP/USP/FCC/Ph.Eur./E304.

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