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CAS 5281-04-9

CAS 5281-04-9 matches 0 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 5281-04-9
CAS 5281-04-9PubChem CID 135423095

2-Naphthalenecarboxylic acid, 3-hydroxy-4-((4-methyl-2-sulfophenyl)azo)-, calcium salt (1:1)

IUPAC name
calcium 2-[(3-carboxy-2-oxidonaphthalen-1-yl)diazenyl]-5-methylbenzenesulfonate
Molecular formula
C18H12CaN2O6S
Molecular weight
424.4 g/mol
Exact mass
424.0041981 Da
Topological polar surface area
151.0 Ų
Hydrogen-bond donors
1
Hydrogen-bond acceptors
8
Covalent units
2
Defined stereocentres
0

Also known as

Calcium 3-hydroxy-4-((4-methyl-2-sulphonatophenyl)azo)-2-naphthoatecalcium 3-hydroxy-4-[(4-methyl-2-sulphonatophenyl)azo]-2-naphthoate2-Naphthalenecarboxylic acid, 3-hydroxy-4-[(4-methyl-2-sulfophenyl)azo]-, calcium salt (1:1)RefChem:476607Lithol Rubin BCAD&C Red No. 7Brilliant Carmine 6BECW0LZ41X8
16 more reported names
Calcium 3-hydroxy-4-((4-methyl-2-sulfonatophenyl)diazenyl)-2-naphthoatered 7C.I. 15850:1Calcium 3-hydroxy-4-(4-methyl-2-sulphonatophenyl)azo-2-naphthoateLithol Rubine BKLithol rubin B ca2-Naphthalenecarboxylic acid, 3-hydroxy-4-(2-(4-methyl-2-sulfophenyl)diazenyl)-, calcium salt (1:1)D & C Red no. 7CCRIS 4903CI 15850:1 (Ca salt)EINECS 226-109-5LITHOLRUBINED&C Red 7UNII-ECW0LZ41X8DC RED NO. 7AKA202
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

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 5281-04-9

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How CAS 5281-04-9 is used on this site

CAS 5281-04-9 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 0 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 5281-04-9 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.