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Name L-Ascorbyl 6-palmitate
CAS 137-66-6
EINECS(EC#) 205-305-4
Molecular Formula C22H38O7
MDL Number MFCD00005377
Molecular Weight 414.53
MOL File 137-66-6.mol

Chemical Properties

Melting point  115-118 °C(lit.)
alpha  +21~+26°(20℃/D, c=2, C2H5OH)
Boiling point  512.7±50.0 °C(Predicted)
density  1.150±0.06 g/cm3(Predicted)
refractive index  22.5 ° (C=1, EtOH)
storage temp.  2-8°C
solubility  Slightly soluble in ethyl alcohol.
form  neat
pka 3.96±0.10(Predicted)
color  White to Pale Gray
optical activity [α]20/D +23±1°, c = 1% in ethanol
BRN  96552

Ascorbyl Palmitate is an antioxidant formed by combining ascor- bic acid with palmitic acid. ascorbic acid is not fat soluble but ascor- byl palmitate is, thus combining them produces a fat-soluble antioxidant. it exists as a white or yellowish white powder of citric- like odor. it is used as a preservative for natural oils, edible oils, col- ors, and other substances. it acts synergistically with alpha-tocopherol in oils/fats. it is used in peanut oil at a maximum level of 200 mg/kg individually or in combination.

CAS DataBase Reference 137-66-6(CAS DataBase Reference)
EPA Substance Registry System 137-66-6(EPA Substance)

Safety Data

Hazard Codes  Xn
Risk Statements 

R20/21/22:Harmful by inhalation, in contact with skin and if swallowed .
R36/37/38:Irritating to eyes, respiratory system and skin .

Safety Statements 

S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing .

WGK Germany  1
RTECS  CI7671040
HS Code  29362700
Safety Profile

When heated to decomposition it emits acrid smoke and irritating fumes.

Hazardous Substances Data 137-66-6(Hazardous Substances Data)

LD50 orally in Rabbit: > 5000 mg/kg

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