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CAS 2 records

CAS 6535-46-2

CAS 6535-46-2 matches 2 EU annex records across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 6535-46-2
CAS 6535-46-2PubChem CID 23034

Pigment Red 112

IUPAC name
3-hydroxy-N-(2-methylphenyl)-4-[(2,4,5-trichlorophenyl)diazenyl]naphthalene-2-carboxamide
Molecular formula
C24H16Cl3N3O2
Molecular weight
484.8 g/mol
Exact mass
483.030810 Da
XLogP3
8.2
Topological polar surface area
74.1 Ų
Hydrogen-bond donors
2
Hydrogen-bond acceptors
4
Covalent units
1
Defined stereocentres
0

Also known as

Permanent Red FGRNaphthol Red FGRLuconyl Red 3855Permanent Red LUnisperse Red 3RS-E2Special Red FGRPermanent Red GYColanyl Red FGRX
16 more reported names
Irgalite Red 3RSIsol Aryl Red GRHelio Fast Red BBRenol Red FGR-HWHelio Fast Red BBNHelio Fast Red BBTFlexonyl Red FGR-LAOriental Fast Red GRUnisperse Red 3RS-PXfast Red 3855Segnale Light Red FGRSanyo Permanent Red FNPermanent Red FGR 02Permanent Red FGR 70Sanyo Permanent Red FNGColanyl Red FGRG 100
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

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 6535-46-2

2 total
Annex
IV
Entry
11

CI 12370

3-Hydroxy-N-(o-tolyl)-4-[(2,4,5-trichlorophenyl)azo]naphthalene-2-carboxamide
EC
229-440-3
Max concentration

How CAS 6535-46-2 is used on this site

CAS 6535-46-2 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 2 EU annex records share 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 6535-46-2 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 6535-46-2 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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