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Avobenzone (Butyl Methoxydibenzoylmethane) — CAS 70356-09-1 | UV Filter Supplier
CAS 70356-09-1
UV-A-focused filter with additional UV-B filtering contribution; suited to water-repellent and water-resistant sun care systems due to its oil solubility.
Overview
Avobenzone
Avobenzone (Butyl Methoxydibenzoylmethane) is an oil-soluble UV-A/UV-B filter in Sigmak’s UV portfolio (product code SIG-UV-014).
A dibenzoylmethane chromophore absorbs strongly across the UV-A range.
Product identity
- CAS Number
- 70356-09-1
- Molecular Formula
- C20H22O3
- Molecular Weight
- 310.39
- Appearance
- Light yellow to yellow powder
- Melting Point
- 81–86 °C
- Purity
- NLT 98%
- Canada DSL
- Listed
Cosmetic / Formulation Applications
- UV-A and UV-B filtering in sunscreen formulations
- Water-repellent sunscreen systems
- Water-resistant sun care formulations
Typical formulation considerations
- Oil-soluble; particularly relevant to water-repellent and water-resistant sunscreen systems.
- Supplied as a powder; melting range (see technical data) is a factor in oil-phase processing temperature.
- Formulators should validate photostability in their own multi-filter systems; Sigmak does not make photostability performance claims for this listing.
Packaging & documentation
- Packaging
- 25 kg corrugated box
- Shelf life
- 3 years
- Storage
- Store at ambient temperature in a dry place away from direct sunlight.
- Documentation
- CoA / SDS / TDS available on request.
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