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Benzophenone-3 (Oxybenzone) — CAS 131-57-7 | UV Filter Supplier
CAS 131-57-7
Contributes UV-B absorption with short-range UV-A support.
Overview
Benzophenone-3 (Oxybenzone)
Benzophenone-3, also known as Oxybenzone, is a benzophenone-class organic UV filter in Sigmak’s UV portfolio (product code SIG-UV-024).
The benzophenone chromophore absorbs UV radiation across the UV-B range and part of the UV-A range through its conjugated aromatic ketone structure.
Product identity
- CAS Number
- 131-57-7
- Molecular Formula
- C14H12O3
- Molecular Weight
- 228.24
- Appearance
- Pale yellow crystalline powder
- Purity
- NLT 98%
Cosmetic / Formulation Applications
- UV filter for sunscreen and sun care formulations
- Cosmetic systems requiring UV-B protection with short-range UV-A support
- Personal care products using established benzophenone UV chemistry
Typical formulation considerations
- Oil-soluble; incorporated into the oil phase alongside other benzophenone-class or ester-type UV filters.
- Regulatory permitted-use levels for oxybenzone vary by jurisdiction and are updated periodically; confirm current regional requirements independently before finalizing a formulation.
Packaging & documentation
- Packaging
- 25 kg fiber drum or corrugated box
- Shelf life
- 3 years
- Storage
- Store in a well-closed container at ambient temperature away from direct sunlight.
- Documentation
- CoA / SDS / TDS available on request.
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