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Catalog Number | CI-SC-0555 |
Product Name | Avobenzone |
CAS | 70356-09-1 |
Structure | |
Synonyms | Butyl methoxydibenzoylmethane |
Description | Oil-soluble UVA filter. Ability to absorb ultraviolet light over a wider range of wavelengths than many other sunscreen agents. Absorption maximum of 357 nm. |
Molecular Weight | 310.4 g/mol |
Molecular Formula | C20H22O3 |
Melting Point | 81.0-86.0 °C |
Purity | 97-104% |
Density | 1.079 g/ml |
Solubility | Water-insoluble, soluble in isopropanol, octocrylene, decyl oleate, capric/caprylic triglyceride, and other oils |
Appearance | Off-white to yellowish, crystalline powder, weak odor |
Application | Sun care products, baby sun care products, daily sun protection, decorative cosmetics. |
Storage | Store light-protected at a cool and dry place |
Composition | Butyl methoxydibenzoyl methane |
Features And Benefits | Oil-soluble UVA filterCan easily be combined with other sunscreens (e.g. octocrylene, homosalate, ethylhexyl salicylate, OM-cinnamate) |
GMO | GMO-free (does not contain plant-derived components) |
HS Code | 3304100000 |
INCI | Butyl methoxydibenzoyl methane |
Manufacture | Avobenzone is produced synthetically by reacting 4-tert-butylbenzoic methyl ester (from 4-tert-butylbenzoic acid by esterification with methanol) with 4-methoxyacetophenone in toluene in the presence of sodium amide. |
Preservation | Preservative-free |
Purity Grade | No purity grade applicable |
Raw Material Source | 4-tert-butylbenzoic methyl ester and 4-methoxyacetophenone |
Topological Polar Surface Area | 43.4 Ų |
Uses | Incorporate into oil phase, allowed use levels: USA 3%, EU 5%, Brazil 5%, Japan 10%. Do not use avobenzone together with titanium dioxide and/or zinc oxide (avobenzone can lose its activity). Ions of heavy metals may induce colored complexes (use EDTA to avoid). Stearates, aluminum, zinc or magnesium salts may induce precipitations. For external use only. |