Why does CAS 96-23-1 appear in more than one EU cosmetic annex?

A substance identified by CAS 96-23-1 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.

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Use the INCI Checker on CosIng Checker with INCI names, CAS numbers or EC numbers. Paste CAS 96-23-1 to screen it directly, then review every linked annex record and supplier document.

CAS 1 record

CAS 96-23-1

Q: How do I use CAS 96-23-1 for compliance screening?

Cross-reference CAS 96-23-1 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 96-23-1 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 96-23-1

CAS 96-23-1PubChem CID 7289

1,3-Dichloro-2-propanol

1,3-dichloropropan-2-ol is a secondary alcohol that is isopropanol in which one hydrogen of each methyl group is substituted by a chlorine. A liquid at room temperature (melting point 4C, boiling point 174C at 760 mm Hg), it is used as a solvent for hard resins and nitrocellulose. It has a role as a protic solvent and a cross-linking reagent. It is a secondary alcohol and an organochlorine compound. — ChEBI

IUPAC name: 1,3-dichloropropan-2-ol

Molecular formula: C3H6Cl2O
Molecular weight: 128.98 g/mol
Exact mass: 127.9795702 Da
XLogP3: 0.8
Topological polar surface area: 20.2 Å²
Hydrogen-bond donors: 1
Hydrogen-bond acceptors: 1
Covalent units: 1
Defined stereocentres: 0

Also known as

2-Propanol, 1,3-dichloro-Glycerol 1,3-dichlorohydrinSym-glycerol dichlorohydrin1,3-Dichlorohydrin1,3-DichloroisopropanolEnodrin1,3-Dichloro-2-hydroxypropaneSym-dichloroisopropyl alcohol

16 more reported names

1,3-Dichloroisopropyl alcoholPropylene dichlorohydrinalpha-DichlorohydrinGdchalpha,gamma-DichlorohydrinGlycerol alpha,gamma-dichlorohydrinalpha-Propenyldichlorohydrin2-Chloro-1-(chloromethyl)ethanol2-Propanol, 1-3-dichloro-U 25,3540F4P2VQC07NSC-70982GLYCEROL DICHLOROHYDRINCHEBI:18917RefChem:414304202-491-9

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEBI:CHEBI:18917
ChEMBL:CHEMBL468581
EPA DTXSID:DTXSID6025010
PubMed:36805544
PubMed:36000575
PubMed:35870111
PubMed:34269859
PubMed:33581215
PubMed:30092300
PubMed:29305303
PubMed:29248572
PubMed:26143167
PubMed:24518350
PubMed:24333398
PubMed:22276483

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 96-23-1

1 total

Annex

Entry

648

1,3-Dichloropropan-2-ol

202-491-9

CMR

How CAS 96-23-1 is used on this site

CAS 96-23-1 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 96-23-1 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 96-23-1 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.

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