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
Bis-trimethylbenzoyl phenylphosphine oxide
CAS 725253-72-5
Also registered as 5 other CAS numbers
856258-48-5 · 868272-78-0 · 2177253-08-4 · 2387537-12-2 · 162881-26-7
Concern score
Not assessed — no hazard data yet.
Bis-trimethylbenzoyl phenylphosphine oxide in plain language
Also known as (Phenylphosphoryl)bis · (PHENYLPHOSPHORYL)BIS((2,4,6-TRIMETHYLPHENYL)METHANONE) · (phenylphosphoryl)bis(mesitylmethanone) · 45% bis-acylphosphine oxide in water · Bis (2, 4, 6-trimethylbenzoyl) phenylphosphine oxide · C26H27O3P
Show all 15 names
Ec 423-340-5 · Irgacure 801 · Irgacure 819 · Irgacure 919 · Irgacure I 819 · Phenylbis(2,4,6-trimethylbenzoyl)phosphine oxide · Phosphine oxide, phenylbis(2,4,6-trimethylbenzoyl)- · UNII-JOV61FMS35 · phenyl bis(2,4,6-trimethylbenzoyl)-phosphine oxide
Used in cosmetics as a light stabiliser.
- Light stabilizer
- Stabiliser
- We haven't assessed a concern score for this ingredient yet. It is listed for cosmetic use in the EU.
Regulation
No restrictions found. Bis-trimethylbenzoyl phenylphosphine oxide appears in these published regulatory listings.
- Found in consumer products
- Industrial
EUCosIngActiveBis-Trimethylbenzoyl Phenylphosphine Oxide is the organic compound.
- Bis-Trimethylbenzoyl Phenylphosphine Oxide is the organic compound.Source →
USEPAcommercial use observedEPA CPDat observed this chemical in 4 composition records across product categories including Construction, Construction and building materials. EPA CPDat classifies this chemical for functional uses including Stabilizing agent, ingredient #3, Photosensitizers.
- EPA CPDat observed this chemical in 4 composition records across product categories including Construction, Construction and building materials. EPA CPDat classifies this chemical for functional uses including Stabilizing agent, ingredient #3, Photosensitizers.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 Bis-trimethylbenzoyl phenylphosphine oxide. 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 Bis-trimethylbenzoyl phenylphosphine oxide 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 november 1, 2016
- 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 Bis-trimethylbenzoyl phenylphosphine oxide in a product composition. These are source records, not Greenveil catalog products.
Source records
4
Named organisations
3
ConstructionConstruction and building materials
Typical roles
Light stabilizerStabiliser