Why does CAS 75980-60-8 appear in more than one EU cosmetic annex?

A substance identified by CAS 75980-60-8 may appear in multiple EU cosmetic regulation annexes when it is subject to different conditions in different contexts — for example, restricted under Annex III with specific conditions, while also appearing in Annex IV as an approved colorant under separate entry conditions. Each entry must be reviewed individually.

How do I check if my formula contains a substance with CAS 75980-60-8?

Use the INCI Checker on CosIng Checker with INCI names, CAS numbers or EC numbers. Paste CAS 75980-60-8 to screen it directly, then review every linked annex record and supplier document.

CAS 1 record

CAS 75980-60-8

Q: How do I use CAS 75980-60-8 for compliance screening?

Cross-reference CAS 75980-60-8 against your raw material specification sheets and CoA documents. When it appears in Annex II, verify absence. When it appears in Annex III, verify that concentration limits and product type conditions are met. All annex entries sharing this CAS number are listed on this page.

CAS 75980-60-8 matches 1 EU annex record across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 75980-60-8

CAS 75980-60-8PubChem CID 166480

2,4,6-Trimethylbenzoyl diphenylphosphine oxide

IUPAC name: diphenylphosphoryl-(2,4,6-trimethylphenyl)methanone

Molecular formula: C22H21O2P
Molecular weight: 348.4 g/mol
Exact mass: 348.12791691 Da
XLogP3: 5.0
Topological polar surface area: 34.1 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 2
Covalent units: 1
Defined stereocentres: 0

Also known as

Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxidePhosphine oxide, diphenyl(2,4,6-trimethylbenzoyl)-EINECS 278-355-8B9EIM2D97Xtrimethylbenzoyl diphenylphosphine oxideCHIVACURE TPODOUBLECURE TPOADDITOL TPO

16 more reported names

GENOCURE TPOMethanone, (diphenylphosphinyl)(2,4,6-trimethylphenyl)-EC 278-355-8(2,4,6-trimethylbenzoyl)diphenylphosphine oxide(DIPHENYLPHOSPHINYL)(2,4,6-TRIMETHYLPHENYL)METHANONERefChem:442966TRIMETHYLBENZOYL DIPHENYLPHOSPHINE OXIDE [INCI]278-355-8(Diphenylphosphoryl)(mesityl)methanone2,4,6-trimethyl benzoyldiphenyl phosphine oxide2,4,6-Trimethylbenzoyldiphenylphosphine oxidediphenyl(2,4,6-trimethylbenzoyl)phosphineoxidediphenyl (2,4,6-trimethylbenzoyl)phosphine oxideUNII-B9EIM2D97Xdiphenylphosphino[(2,4,6-trimethylphenyl)carbonyl]-1-one2,4,6-Trimethylbenzoylphenyl phosphinate, (Diphenylphosphoryl)(mesityl)methanone, (2,4,6-Trimethylbenzoyl)diphenylphosphine oxide

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEMBL:CHEMBL3561198
EPA DTXSID:DTXSID4052502
PubMed:23037832
PubMed:22484872
PubMed:22188970
PubMed:22094322
PubMed:21336328
PubMed:21126292
PubMed:21067803
PubMed:20420066
PubMed:20018363
PubMed:19784638
PubMed:19721283
PubMed:18683958

Retrieved from NIH PubChem on 2026-09-02 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 75980-60-8

1 total

Annex

Entry

1731

diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide; INCI: Trimethylbenzoyl Diphenylphosphine Oxide

278-355-8

How CAS 75980-60-8 is used on this site

CAS 75980-60-8 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 1 EU annex record shares this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.

Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 75980-60-8 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.

Frequently asked questions

A substance identified by CAS 75980-60-8 may appear in multiple EU cosmetic regulation annexes when it is subject to different conditions in different contexts. For example, a substance might be restricted under Annex III with specific conditions, and the same CAS might also appear in Annex IV as an approved colorant under separate entry conditions. Each entry must be reviewed individually.

Cross-reference the CAS number against your raw material specification sheets and CoA documents. When a CAS appears in Annex II, verify absence. When it appears in Annex III, verify that concentration limits and product type conditions are met in your formulation. All annex entries sharing this CAS number are listed above.

A CAS number is assigned by the Chemical Abstracts Service (USA) and is globally recognised. An EC number is a European Commission identifier from inventories such as EINECS, ELINCS or the NLP list. Both identifiers may appear in EU cosmetic annex entries. Some substances have both, some have only one, and some older entries may have neither.

The INCI Checker accepts ingredient names, CAS numbers and EC numbers. Check this CAS number directly, then verify the result against supplier specification sheets and every linked annex condition.

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