Is Trimethoxybenzylidene Pentanedione safe in cosmetics?
Trimethoxybenzylidene Pentanedione has a safety rating of "GOOD" in our database. EU status: permitted. US status: permitted.
Good
Cosmetic Ingredient
Trimethoxybenzylidene Pentanedione
Also known as: 3-(3,4,5-Trimethoxy benzylidene)-2,4-pentanedione, EC 807-059-9
INCI: TRIMETHOXYBENZYLIDENE PENTANEDIONE
Trimethoxybenzylidene Pentanedione (CAS 945558-97-4) is a cosmetic cosmetic ingredient functioning as UV photostabilizer (avobenzone triplet-state quencher), chelating agent, SPF. EU Regulation 1223/2009 status: permitted. Industrial safety data is also available in the chemical safety database. Same-CAS public records also appear in industrial chemical safety data.
View industrial chemical safety profile for CAS 945558-97-4 →
Auto-generated CPSR Part A draft with source citations
Function
UV photostabilizer (avobenzone triplet-state quencher), chelating agent, SPF booster (≥50% in-vivo SPF increase)
Safety Rating
GOOD
Chemistry & Identifiers
IUPAC Name
3-[(3,4,5-trimethoxyphenyl)methylidene]pentane-2,4-dione
InChIKey
ATNSJLDBJQDEBF-UHFFFAOYSA-N
Regulatory Status
EU EU Status
permitted
US US Status
permitted
US Notes
Permitted as cosmetic ingredient; not an OTC sunscreen active; used as adjuvant/stabilizer
For full compliance data across multiple jurisdictions, use the Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for Trimethoxybenzylidene Pentanedione.
Calculate MoS for your specific formulation with the MoS Calculator.
ECHA REACH Registration
European Chemicals Agency REACH dossier and Substances of Very High Concern listing.
Registration Type
Full
Tonnage Band
1 - 10 tonnes
Substance Type
SUBSTANCE
SVHC Candidate
No
Function Categories & List Membership
Cosmetic/Chemical Function Categories
Antioxidant
Chelating agent
Humectant
Expert Verdict
Expert safety assessment and concern-level summary for Trimethoxybenzylidene Pentanedione.
Known Synonyms
3-(3,4,5-Trimethoxy benzylidene)-2,4-pentanedione
EC 807-059-9
Chemical Function
Antioxidant
Humectant
Chelating agent
Frequently Asked Questions
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.
Is Trimethoxybenzylidene Pentanedione used outside cosmetics?
Trimethoxybenzylidene Pentanedione also appears in industrial chemical safety data. The cross-vertical cards on this page render same-CAS public rows from the matched databases.
Compliance Tools
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Substance Compliance
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MoS Calculator
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Heavy Metal Limits
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