Why does CAS 534-52-1 appear in more than one EU cosmetic annex?

A substance identified by CAS 534-52-1 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 534-52-1?

Use the INCI Checker on CosIng Checker with INCI names, CAS numbers or EC numbers. Paste CAS 534-52-1 to screen it directly, then review every linked annex record and supplier document.

CAS 1 record

CAS 534-52-1

Q: How do I use CAS 534-52-1 for compliance screening?

Cross-reference CAS 534-52-1 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 534-52-1 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 534-52-1

CAS 534-52-1PubChem CID 10800

2-Methyl-4,6-dinitrophenol

4,6-dinitro-o-cresol is a hydroxytoluene that is o-cresol carrying nitro substituents at positions 4 and 6. It has a role as a fungicide, a herbicide and a dinitrophenol insecticide. It is a hydroxytoluene, a nitrotoluene and a dinitrophenol acaricide. It is functionally related to an o-cresol and a 2,4-dinitrophenol. — ChEBI

IUPAC name: 2-methyl-4,6-dinitrophenol

Molecular formula: C7H6N2O5
Molecular weight: 198.13 g/mol
Exact mass: 198.02767130 Da
XLogP3: 2.1
Topological polar surface area: 112.0 Å²
Hydrogen-bond donors: 1
Hydrogen-bond acceptors: 5
Covalent units: 1
Defined stereocentres: 0

Also known as

4,6-DINITRO-O-CRESOLDNOCAntinonninDinitrocresolDinitroSinoxAntinoninDegrassan

16 more reported names

DekrysilDinitrolDinuraniaDitrosolHedoliteNitrofanProkarbolRaphatoxSandolinTrifocideWinterwashArborolDillexEffusanElgetolElipol

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEBI:CHEBI:39349
ChEMBL:CHEMBL419564
EPA DTXSID:DTXSID1022053
PubMed:22302165
PubMed:22084678
PubMed:21897825
PubMed:21392493
PubMed:20529338
PubMed:19689894
PubMed:19326864
PubMed:19295073
PubMed:19257878
PubMed:18926899
PubMed:18796162
PubMed:17922567

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 534-52-1

1 total

Annex

Entry

1068

DNOC (ISO)

208-601-1

CMR

How CAS 534-52-1 is used on this site

CAS 534-52-1 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 534-52-1 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 534-52-1 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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