Avobenzone: Broad-Spectrum UVA Sunscreen Filter
Avobenzone (butyl methoxydibenzoylmethane) is one of the few globally approved organic UVA filters that provides absorption across the full UVA range (320–400 nm), with peak absorption around 357 nm. It is a critical component in broad-spectrum sunscreen formulations and is approved for use in the EU (up to 5%), the US (up to 3%), and most other markets worldwide.
Product Profile
| CAS Number | 70356-09-1 |
|---|---|
| Molecular Formula | C₂₀H₂₂O₃ |
| Appearance | Off-white to pale yellow powder |
| Function | UVA sunscreen filter |
| Typical Use Level | 2–5% in sunscreen formulations (EU maximum 5%) |
Formulation Applications
Avobenzone is incorporated into emulsion-based sunscreens (O/W and W/O), sprays, and stick formulations. Its primary limitation is photostability — it degrades under UV exposure unless stabilized with photostabilizers such as octocrylene, ethylhexyl methoxycrylene, or diethylhexyl syringylidenemalonate. Formulators typically pair it with UVB filters (e.g., octisalate, homosalate) to achieve broad-spectrum SPF claims. It is oil-soluble and dissolves readily in common cosmetic emollients. Careful formulation is needed to prevent crystallization in finished products, particularly in low-oil-phase formulations or at lower temperatures.
Why Source from TCS
TCS supplies avobenzone to cosmetic and personal care companies across Europe. Available in standard packaging with flexible quantities for R&D through production scale. Contact us with your specifications and volume requirements.
FAQ
What information should be included in an inquiry for Avobenzone –70356-09-1?
A useful inquiry normally includes the product name, target application, estimated quantity, destination market, and any specific documentation or packaging requests.
How is Avobenzone –70356-09-1 usually evaluated for sourcing?
This product is positioned for excipient sourcing where formulation fit, dosage form, handling, and repeat purchasing requirements need to be reviewed together with commercial supply conditions.
What documentation and commercial points are commonly reviewed before buying Avobenzone –70356-09-1?
For excipient sourcing, teams usually discuss the intended dosage form, formulation role, packaging format, order volume, and the routine documentation needed for qualification and purchasing.
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