Why does CAS 7782-49-2 appear in more than one EU cosmetic annex?

A substance identified by CAS 7782-49-2 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 7782-49-2?

Use the INCI Checker on CosIng Checker with INCI names, CAS numbers or EC numbers. Paste CAS 7782-49-2 to screen it directly, then review every linked annex record and supplier document.

CAS 1 record

CAS 7782-49-2

Q: How do I use CAS 7782-49-2 for compliance screening?

Cross-reference CAS 7782-49-2 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 7782-49-2 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 7782-49-2

CAS 7782-49-2PubChem CID 6326970

Selenium

Selenium atom is a nonmetal atom and a chalcogen. It has a role as a micronutrient. — ChEBI

IUPAC name: selenium

Molecular formula: Se
Molecular weight: 78.97 g/mol
Exact mass: 79.91652 Da
Topological polar surface area: 0.0 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 0
Covalent units: 1
Defined stereocentres: 0

Also known as

Elemental seleniumSelenium elementalSelenium, elementalVandexSelenGray seleniumSelenium baseSelenium dust

16 more reported names

Colloidal seleniumSelenium metallicumCaswell No. 732SECI 77805C.I. 77805EPA Pesticide Chemical Code 072001B-TRAXIM SEH6241UJ22BSELSAF 2000CHEBI:27568Selenium 80selandiyliumHoarse CoughDietary SeleniumRefChem:182285

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEBI:CHEBI:27568
ChEMBL:CHEMBL6068503
EPA DTXSID:DTXSID9021261
PubMed:40143630
PubMed:39779229
PubMed:39294077
PubMed:39095152
PubMed:39059692
PubMed:38796086
PubMed:38013145
PubMed:37987225
PubMed:37914285
PubMed:37860879
PubMed:37834424
PubMed:37683847

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 7782-49-2

1 total

Annex

Entry

297

Selenium and its compounds with the exception of selenium disulphide under the conditions set out under reference No 49 in Annex III

231-957-4

How CAS 7782-49-2 is used on this site

CAS 7782-49-2 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 7782-49-2 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 7782-49-2 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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Tools & next steps

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