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Avobenzone Properties

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Avobenzone

Molecule Structure Image

Description

Avobenzone is an oil soluble ingredient used in sunscreen products to absorb the full spectrum of UVA rays. It is a dibenzoylmethane derivative. It exists in the ground state as a mixture of the enol and keto forms, favoring the chelated enol. Its ability to absorb ultraviolet light over a wider range of wavelengths than many organic sunscreen agents has led to its use in many commercial preparations marketed as broad spectrum sunscreens.

Chemical Properties

Appearance	White powder
Brand Name	Parsol 1789;Eusolex 9020;Escalol 517
CAS Number	70356-09-1
Density	1.079 g/cm³
EINECS Number	274-581-6
HS Code	29145000
IUPAC Name	1-(4-Methoxyphenyl)-3-(4-tert-butylphenyl)propane-1,3-dione
InChI	1S/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
InChIKey	XNEFYCZVKIDDMS-UHFFFAOYSA-N
Melting Point	81-84 °C
Molar Mass	310.39 g/mol
Molecular Formula	C₂₀H₂₂O₃
Synonyms	Butylmethoxydibenzoylmethane;4-tert-Butyl-4'-methoxydibenzoylmethane;Avobenzone