Why does CAS 6417-83-0 appear in more than one EU cosmetic annex?

A substance identified by CAS 6417-83-0 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.

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Use the INCI Checker on CosIng Checker with INCI names, CAS numbers or EC numbers. Paste CAS 6417-83-0 to screen it directly, then review every linked annex record and supplier document.

CAS 2 records

CAS 6417-83-0

Q: How do I use CAS 6417-83-0 for compliance screening?

Cross-reference CAS 6417-83-0 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 6417-83-0 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 6417-83-0

CAS 6417-83-0PubChem CID 135487685

D&C Red No. 34

IUPAC name: calcium 2-[(3-carboxy-2-oxidonaphthalen-1-yl)diazenyl]naphthalene-1-sulfonate

Molecular formula: C21H12CaN2O6S
Molecular weight: 460.5 g/mol
Exact mass: 460.0041981 Da
Topological polar surface area: 151.0 Å²
Hydrogen-bond donors: 1
Hydrogen-bond acceptors: 8
Covalent units: 2
Defined stereocentres: 0

Also known as

CI 15880Pigment Red 63:1 (Technical Grade)calcium;2-[(3-carboxy-2-oxidonaphthalen-1-yl)diazenyl]naphthalene-1-sulfonate2-Naphthalenecarboxylic acid, 3-hydroxy-4-(2-(1-sulfo-2-naphthalenyl)diazenyl)-, calcium salt (1:1)D & C Red no. 34CCRIS 7075EINECS 229-142-3UNII-BAN556989E

16 more reported names

CI 15880:1 (Ca salt)EC 229-142-3C21H12CaN2O6SDC RED NO. 34AKA220RED 34GSKZUBJRXCWFFE-XTMYEIJHSA-LCalcium 3-hydroxy-4-((1-sulphonato-2-naphthyl)azo)-2-naphthoateHY-D1164Pigment Red 63:1, Technical grade2-Naphthalenecarboxylic acid, 3-hydroxy-4-((1-sulfo-2-naphthalenyl)azo)-, calcium salt2-Naphthalenecarboxylic acid, 3-hydroxy-4-((1-sulfo-2-naphthalenyl)azo)-, calcium salt (1:1)2-Naphthalenecarboxylic acid, 3-hydroxy-4-((1-sulfo-2-naphthalenyl)azo)-, calcium salt(1:1)3-Hydroxy-4-((1-sulfo-2-naphthalenyl)azo)-2-naphthalenecarboxylic acid, calcium salt(1:1)CS-0137964C.I. NO.15880 (D&C RED NO. 34)

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

EPA DTXSID:DTXSID4064347

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 6417-83-0

2 total

Annex

Entry

1349

Calcium 3-hydroxy-4-[(1-sulphonato-2-naphthyl)azo]-2-naphthoate (Pigment Red 63:1; CI 15880) when used as a substance in hair dye products

229-142-3

Annex

Entry

CI 15880

Calcium 3-hydroxy-4-[(1-sulphonato-2-naphthyl)azo]-2-naphthoate

229-142-3

How CAS 6417-83-0 is used on this site

CAS 6417-83-0 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 6417-83-0 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 6417-83-0 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.

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