Product Introduction
Product Name: Benzophenone-3
Synonym: Oxybenzone
CAS Number: 131-57-7
Molecular Formula: C₁₄H₁₂O₃
Molecular Weight: 228.24 g/mol
Structure: HO-C₆H₃(OCH₃)-CO-C₆H₅
Benzophenone-3 Chemical Structural Formula
Appearance: Pale yellow-green crystalline powder
Identification: IR: Sample IR spectrum matches that of the reference standard
HPLC: Retention time of the sample’s main peak matches that of the reference standard
Assay (HPLC): 97.0%–103.0%
Solidification point: ≥62.0°C
Loss on drying: ≤0.20%
Impurities (HPLC): Total impurities: ≤1.0%
BP-1: ≤0.2%
Largest single unknown impurity: ≤0.10%
Residual solvents: Ethanol: ≤5000 ppm
Odor: Characteristic and intensity similar to the reference standard; very faint odor
Specific absorbance (1%, 1cm): E288 ≥ 630; E325 ≥ 410
Melting point: 62.0°C–65.0°C
Heavy metals (Pb): ≤5 ppm
Gardner color: ≤4.0
Solubility: Insoluble in water; readily soluble in organic solvents such as ethanol and acetone
UV absorption curve:
Highassay’s Benzophenone-3 Features
• Oil-soluble sunscreen agent
• Provides UV protection
• Enhances the photostability of cosmetic products
• Suitable for use in sunscreens, shampoos, hair care products, lipsticks, lip balms, and nail polishes
• Maximum usage level: 6% (EU, US, CA), 10% (CN), 5% (JP, KR)
