Fragrance avoidance
Nothing to weigh for this context yet.
We have no published hazard signal for this ingredient, so we cannot say how it behaves in this context — that is missing evidence, not a clean result.
- beauty
- industrial
Trimethoxybenzylidene pentanedione
CAS 945558-97-4
Concern score
Not assessed — no hazard data yet.
Trimethoxybenzylidene pentanedione in plain language
Also known as 3-((3,4,5-TRIMETHOXYPHENYL)METHYLENE)-2,4-PENTANEDIONE · 3-(3,4,5-Trimethoxy benzylidene)-2,4-pentanedione · 3-(3,4,5-trimethoxybenzylidene)-2,4-pentanedione · Atnsjldbjqdebf-uhfffaoysa-n · Ec 807-059-9 · Q27256128
Show all 8 names
Synoxyl hss · UNII-322V0ACF25
Used in cosmetics as an antioxidant, a skin protectant and a chelating agent.
- Antioxidant
- Skin protecting
- Chelating
- Humectant
- Chelating agent
- We haven't assessed a concern score for this ingredient yet. It is listed for cosmetic use in the EU.
Regulation
No restrictions found. Trimethoxybenzylidene pentanedione appears in these published regulatory listings.
- Found in consumer products
- Industrial
EUCosIngActiveTrimethoxybenzylidene Pentanedione is the organic compound.
- Trimethoxybenzylidene Pentanedione is the organic compound.Source →
USEPAcommercial use observedEPA CPDat observed this chemical in 0 composition records across product categories including unclassified products. EPA CPDat classifies this chemical for functional uses including Antioxidant, Humectant, Chelating agent.
- EPA CPDat observed this chemical in 0 composition records across product categories including unclassified products. EPA CPDat classifies this chemical for functional uses including Antioxidant, Humectant, Chelating agent.Source →
USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.
- openFDA substance registry classifies this ingredient as chemical.Source →
Expert safety opinions
No expert opinion on file for Trimethoxybenzylidene pentanedione. These are the independent scientific bodies that assess ingredients like this one; we show an opinion only when a record we hold cites it.
SCCS
EU Scientific Committee on Consumer Safety
No SCCS opinion on file.
CIR
Cosmetic Ingredient Review (US expert panel)
No CIR safety assessment on file.
Evidence & sources
No graded research studies for Trimethoxybenzylidene pentanedione yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.
Where this comes from
- Open →
CosIng
regulatory · updated 2026-09-23
- Open →
EPA Chemical and Products Database
exposure · updated 2019-12-20
- Open →
EPA DSSTox Identifiers
chemistry · updated 2025-12-29
- Open →
FDA GSRS UNII
registry · updated 2026-02-26
- Open →
openFDA Substance
registry · updated 2026-05-24
- Open →
PubChem Live Enrichment
chemistry · updated 2026-05-17
Suitability
Context-specific fit derived from published classifications and the current ingredient evidence profile.
No signal in this context
Where it has been recorded
How often EPA CPDat has listed Trimethoxybenzylidene pentanedione in a product composition. These are source records, not Greenveil catalog products.
Named organisations
1
Typical roles
AntioxidantSkin protectingChelatingHumectantChelating agent
Found in these products
Cosmetic and personal-care products that list Trimethoxybenzylidene pentanedione are shown first. Their ingredient lists include Trimethoxybenzylidene pentanedione; each product's own rating depends on its whole formula, so it is shown on the product page, not here.
