Benzophenone 4

Benzophenone 4 is an ingredient in some sunscreens which protects the skin from damage by UVB and UVA ultraviolet light. It is a water soluble broad band UV‐filter. It has worldwide approval for skin protection and it is widely used in sun preparations. It can also offer protection of colorants against fading and help stabilize fragrances and active ingredients against oxidation.

Product name: Sulisobenzone
Chemical name: 4-Hydroxy-2-methoxy-5-(oxo-phenylmethyl)benzenesulfonic acid
INCI: Sulisobenzone
CAS: 4065-45-6
EINECS: 223-772-2
USAN: Sulisobenzone
Chemical structure:
UV-absorption range: 290 – 360 nm
Molecular Formula: C14H12O6S
Molecular weight: 308.304
Applications: Assist in protection of skin from damaging UV-A and UV-B radiation. Component of Sunscreens, make up creams, hand and face lotions.

Technical Data

Appearance: Yellow to beige powder
Odor: Characteristic odor
Loss on drying: <=5% (w/w)
Assay by GC /HPLC: >= 97.0 – 103.0% (w/w)
Melting point: 48.5°C
Heavy metals content: <= 20 ppm
Solubility: Soluble in water, glycerine, propylene glycol, ethyl alcohol, IPM etc.
Regulatory status max concentration: US: Up to 2-3%, Europe: Up to 5%, Japan: Up to 10%, China: Up to 5%, Canada: Up to 5%
Pharmacopoeia information: USP
Packaging: 25 kg Carton Box
Storage recommendation: Store away from incompatible substances. Incompabilities: Oxidizers (Strong): Fire and explosion hazard, protect from light. Shelf life three years from date of Original packaging under adequate storage conditions.