Product Introduction:
Product Name: Benzophenone-4
Synonym: Sulisobenzone
Benzophenone-4 CAS No.: 4065-45-6
EINECS No.: 223-772-2
Molecular Formula: C₁₄H₁₂O₆S
Molecular Weight: Approx. 308.31 g/mol
Applications: A water-soluble UVB sunscreen agent that also offers partial UVA protection; used in sunscreens, skincare products, color cosmetics, and hair care products.
Benzophenone-4 Chemical Structural Formula
Appearance: White to pale yellow crystalline powder
Specific absorbance (1%, 1cm): E285: 460–490;
E325: 285–315
Purity (HPLC): ≥ 99.0%
pH value: 1.2–2.2
Melting point: ≥ 140°C
Loss on drying: ≤ 3.0%
Aqueous solution turbidity: ≤ 4.0 EBC
Heavy metals: ≤ 5 ppm
Gardner color: ≤ 2.0
Solubility: Water-soluble; soluble in water (approx. 250 mg/L)
UV absorption curve:
Highassay’s Benzophenone-4 Features:
• Water-soluble
• Sunscreen agent providing UVA absorption with UVB-range auxiliary absorption
• Prevents dye fading
• Helps prevent the oxidation of fragrances and active ingredients
• Suitable for skincare applications, such as sunscreens and anti-aging facial products
• Maximum usage level: 5% (EU, CN, KR); 10% (US, AUS, JP)
