Avobenzone (BMDM, Butyl methoxydibenzoylmethane) is a sun-A screen chemical that offers broad-range protection against uVA rays.  Avobenzone absorbs both UV-(380-315 nm that is associated with long term skin damage) and UV-B (315-280 nm that causes sunburn) rays. Avobenzone is known as one of the most effective sunscreen ingredient. Key Technical Parameters: Appearance White to pale yellow powder Identity(IR)USP<197> Matches reference spectrum Identity(Retention time) USP<621> Matches reference retention time UV specific extinction(E1m at 357 nm in ethanol) Spectrophotometry USP<197U> 1100~1180 Melting point USP<741> 81.0℃~86.0℃ Loss on drying (%) USP<731> 0.50max Chromatographic purity GC USP<621> Each impurity(%) 3.0max Total impurities(%) 4.5max Assay(%) GC USP<621> 95.0~105.0 Residual solvents Methanol(ppm) 3000max Toluene(ppm) 890max Microbial purity Total amount of aerobe 100 CFU/g max Total yeast and moulds 100CFU/g max   Applications: Sunscreens, Personal Care products, Sun care, Baby Sun care, Daily skin care, Decorative cosmetics with sun protection, Broad spectrum UV-A filter.