Why does CAS 630-08-0 appear in more than one EU cosmetic annex?

A substance identified by CAS 630-08-0 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.

How do I check if my formula contains a substance with CAS 630-08-0?

Use the INCI Checker on CosIng Checker with INCI names, CAS numbers or EC numbers. Paste CAS 630-08-0 to screen it directly, then review every linked annex record and supplier document.

CAS 1 record

CAS 630-08-0

Q: How do I use CAS 630-08-0 for compliance screening?

Cross-reference CAS 630-08-0 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 630-08-0 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 630-08-0

CAS 630-08-0PubChem CID 281

Carbon Monoxide

Carbon monoxide is a one-carbon compound in which the carbon is joined only to a single oxygen. It is a colourless, odourless, tasteless, toxic gas. It has a role as a metabolite, a mitochondrial respiratory-chain inhibitor, a neurotransmitter, a vasodilator agent, an EC 1.9.3.1 (cytochrome c oxidase) inhibitor, a P450 inhibitor, a probe, a neurotoxin, a ligand, a biomarker, a signalling molecule, a mouse metabolite and a human metabolite. It is a gas molecular entity, a carbon oxide and a one-carbon compound. It is a conjugate base of a carbon monoxide(1+). — ChEBI

IUPAC name: carbon monoxide

Molecular formula: CO
Molecular weight: 28.010 g/mol
Exact mass: 27.994914619 Da
XLogP3: 0.7
Topological polar surface area: 1.0 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 1
Covalent units: 1
Defined stereocentres: 0

Also known as

carbon monooxideCarbonic oxideCarbon oxide (CO)carbon(II) oxideExhaust gasFlue gasmonoxideKohlenmonoxid

16 more reported names

KoolmonoxydeKohlenoxydWegla tlenekOxyde de carboneCarbone (oxyde de)Carboneum oxygenisatumCarbonio (ossido di)7U1EE4V452CHEBI:17245Monoxide, CarbonRefChem:6405carbon monooxide;carbon monoxide;carbon(II) oxide211-128-3CARBON MONOXIDE (13C; 18O)Carbon monoxide [USAN][CO]

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEBI:CHEBI:17245
ChEMBL:CHEMBL1231840
EPA DTXSID:DTXSID5027273
PubMed:41205789
PubMed:39504919
PubMed:37860845
PubMed:37141245
PubMed:36481359
PubMed:36272593
PubMed:35999615
PubMed:35287715
PubMed:34774656
PubMed:34533065
PubMed:34032369
PubMed:33603036

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 630-08-0

1 total

Annex

Entry

462

Carbon monoxide

211-128-3

CMR

How CAS 630-08-0 is used on this site

CAS 630-08-0 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 630-08-0 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 630-08-0 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.

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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Tools & next steps

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