Hubei Honest Biochemical Co., Ltd.

Avobenzone

Name:Avobenzone

EINECS:274-581-6

Molecular Formula:C20H22O3

CAS :70356-09-1

Synonyms:1-(4-Methoxyphenyl)-3-(4-tert-butylphenyl)propane-1,3-dione; 1-(4-tert-Butylphenyl)-3-(4-methoxyphenyl)propan-1,3-dione; 4-(1,1-Dimethylethyl)-4'-methoxydibenzoylmethane; 4-Methoxy-4'-tert-butyldibenzoylmethane; 4-tert-Butyl-4'-methoxydibenzoylmethane; 1,3-Propanedione,1-[4-(1,1-dimethylethyl)phenyl]-3-(4-methoxyphenyl)-; Butylmethoxydibenzoylmethane; Escalol 517; Eusolex 9020; NeoHeliopan 357; Parsol 1789; Parsol A; Parsol RTM 1789; Photoplex;

InChI:InChI=1/C20H22O3/c1-20(2,3)16-9-5-14(6-10-16)18(21)13-19(22)15-7-11-17(23-4)12-8-15/h5-12H,13H2,1-4H3

HS Code:29145000

Appearance:white powder

Package:25KG/DRUM

Standard:enterprise standard

Assay:99%

Molecular Weight:310.39

Density:1.079

Boiling Point:463.6 oC at 760 mmHg

Melting Point:81-84 °C

Flash Point:463.6 oC at 760 mmHg

Storage Temperature:Keep container tightly closed. Protect from light.

Refractive index:1.546

Solubility:463.6 oC at 760 mmHg

Usage:Cosmetic raw material.

Avobenzone is sensitive to the properties of the solvent, being relatively stable in polar protic solvents and unstable in nonpolar environments. Also, when it is irradiated with UVA light, it generates a triplet excited state in the keto form which can either cause the avobenzone to degrade or it can transfer energy to biological targets and cause deleterious effects.[2]

Avobenzone has been shown to degrade significantly in light, resulting in less protection over time.[6][7][8] The UV-A light in a day of sunlight in a temperate climate is sufficient to break down most of the compound. Data presented to the Food and Drug Administration by the Cosmetic, Toiletry and Fragrance Association indicates a -36% change in avobenzone's UV absorbance following one hour of exposure to sunlight.