Application field Avobenzone is a sunscreen blocker. Avobenzone is a topical, broad range UV protector and blocks UVA I, UVA II, and UVB wavelengths, thereby limiting the impact of UV rays on skin. Technical Specification Appearance: White or pale yellow crystalline powder Absorptivities at 360nm do not differ by more than 3.0% Loss on drying 0.5% max Assay (GC) 95.0~105.0% Impurity (GC) Individual impurity: 3.0% max Total impurity: 4.5% max Residual solvents Methanol: 3000ppm max