Trimethoxybenzylidene Pentanedione

INCI: TRIMETHOXYBENZYLIDENE PENTANEDIONE

CAS Number
945558-97-4
Function
UV photostabilizer (avobenzone triplet-state quencher), chelating agent, SPF booster (≥50% in-vivo SPF increase)
Safety Rating
GOOD

Regulatory Status

🇪🇺 EU Status permitted
🇺🇸 US Status permitted
US Notes Permitted as cosmetic ingredient; not an OTC sunscreen active; used as adjuvant/stabilizer

For full compliance data across 55 jurisdictions, use the Substance Compliance tool.

Safety Data

Margin of Safety (MoS)
adequate
Dermal Absorption
moderate
Sensitization
low

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Must be formulated correctly with avobenzone to function; chelating properties may interact with metal-containing ingredients; confirm stability with specific UV filter combinations

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Concern Level: Low

Frequently Asked Questions

Is Trimethoxybenzylidene Pentanedione safe in cosmetics?

Must be formulated correctly with avobenzone to function; chelating properties may interact with metal-containing ingredients; confirm stability with specific UV filter combinations The EU classifies Trimethoxybenzylidene Pentanedione as "permitted". Safety rating: GOOD.

Is Trimethoxybenzylidene Pentanedione allowed in the EU?

Trimethoxybenzylidene Pentanedione EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Trimethoxybenzylidene Pentanedione do in cosmetics?

Trimethoxybenzylidene Pentanedione functions as: UV photostabilizer (avobenzone triplet-state quencher), chelating agent, SPF booster (≥50% in-vivo SPF increase). It is classified as a cosmetic ingredient in our database. CAS number: 945558-97-4.

What is the Margin of Safety for Trimethoxybenzylidene Pentanedione?

adequate The Margin of Safety (MoS) is calculated using SCCS methodology. A MoS above 100 is generally considered safe. Use the MoS Calculator tool to calculate MoS for your specific formulation and product category.

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