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CAS 5850-44-2

CAS 5850-44-2 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 5850-44-2
CAS 5850-44-2PubChem CID 22112

1,3,6-naphthalenetrisulfonic acid, 7-hydroxy-8-((4-sulfo-1-naphthalenyl)azo)-, tetrasodium salt

IUPAC name
tetrasodium;7-hydroxy-8-[(4-sulfonatonaphthalen-1-yl)diazenyl]naphthalene-1,3,6-trisulfonate
Molecular formula
C20H10N2Na4O13S4
Molecular weight
706.5 g/mol
Exact mass
705.8656502 Da
Topological polar surface area
307.0 Ų
Hydrogen-bond donors
1
Hydrogen-bond acceptors
15
Covalent units
5
Defined stereocentres
0

Also known as

C.I. Acid Red 411,3,6-Naphthalenetrisulfonic acid, 7-hydroxy-8-[(4-sulfo-1-naphthalenyl)azo]-, tetrasodium saltRefChem:412769Acid red 41Neklacid Red 6RScarlet 6RPonceau 6RAPonceau 6RPA
16 more reported names
Ponceau Red 6RAcilan Ponceau 6REurocert Ponceau 6RC.I. Food Red 8L-Red 5Hispacid Brilliant ScarletPonceau 6R Specially PureCerven kysela 41 [Czech]Cerven kysela 41Cerven potravinarska 8 [Czech]Cerven potravinarska 8PONCEAU6REINECS 227-454-4C.I. Acid Red 41, tetrasodium saltCI 16290C.I. 16290
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 5850-44-2

1 total
Annex
IV
Entry
36

CI 16290

Tetrasodium 7-hydroxy-8-[(4-sulphonato-1-naphthyl)azo]naphthalene-1,3,6-trisulphonate
EC
227-454-4

How CAS 5850-44-2 is used on this site

CAS 5850-44-2 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 5850-44-2 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 5850-44-2 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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