Agent Name

Avobenzone

CAS Number

70356-09-1

Formula

C20-H22-O3

Major Category

Other Uses

Synonyms

4-tert-butyl-4'-methoxydibenzoylmethane; Butyl methoxydibenzoylmethane; 1,3-Propanedione, 1-(4-(1,1-dimethylethyl)phenyl)-3-(4-methoxyphenyl)-; 1-(4-(1,1-Dimethylethyl)phenyl)-3-(4-methoxyphenyl)-1,3-propanedione; 1-(p-tert-Butylphenyl)-3-(p-methoxyphenyl)-1,3-propanedione; Avobenzona [INN-Spanish]; Avobenzonum [INN-Latin]; Parsol 1789; [ChemIDplus]

Category

Sunscreens

Description

Solid; [Merck Index] Yellow to light tan crystalline powder; [MSDSonline]

Sources/Uses

Used as an ultraviolet sunscreen; [Merck Index]

Comments

It caused one positive photo patch tests in a series of 187 photosensitive patients; It has been used as a sunscreen in Europe for over 10 years, and both contact and photocontact reactions have been reported; [Marks, p. 214] May cause irritation; [MSDSonline]

Exposure Assessment
Vapor Pressure

1.4E-6 mm Hg

Adverse Effects
Skin Sensitizer

Yes

Dermatotoxin

Contact Dermatitis, Photoallergic

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information

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Chemical Information

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Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent: