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2,7-Naphthalenedisulfonic acid, 5-ethoxy-4-hydroxy-3-[[4-(6-methyl-2-benzothiazolyl)phenyl]azo]-, disodium salt

Also known as: 5-Ethoxy-4-hydroxy-3-[[4-(6-methylbenzothiazol-2-yl)phenyl]azo]-2,7-naphthalenedisulfonic acid disodium salt, C.I.15080, C.I.Direct Red 3, C.I.Direct Red 3:C.I.15080

2,7-Naphthalenedisulfonic acid, 5-ethoxy-4-hydroxy-3-[[4-(6-methyl-2-benzothiazolyl)phenyl]azo]-, disodium salt (CAS 2846-11-9) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C26H19N3Na2O8S3 and a molecular weight of 643.6 g/mol. It is also known as 5-Ethoxy-4-hydroxy-3-[[4-(6-methylbenzothiazol-2-yl)phenyl]azo]-2,7-naphthalenedisulfonic acid disodium salt, C.I.15080 and C.I.Direct Red 3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
2846-11-9
Jingsj CID
J-1224401-4
Molecular Formula
C26H19N3Na2O8S3
Molecular Weight
643.6 g/mol
Category
Organic Compounds
Last updated
8/21/2026

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Frequently Asked Questions

What is the CAS number of 2,7-Naphthalenedisulfonic acid, 5-ethoxy-4-hydroxy-3-[[4-(6-methyl-2-benzothiazolyl)phenyl]azo]-, disodium salt?

The CAS number of 2,7-Naphthalenedisulfonic acid, 5-ethoxy-4-hydroxy-3-[[4-(6-methyl-2-benzothiazolyl)phenyl]azo]-, disodium salt is 2846-11-9.

What are the molecular formula and molecular weight of 2,7-Naphthalenedisulfonic acid, 5-ethoxy-4-hydroxy-3-[[4-(6-methyl-2-benzothiazolyl)phenyl]azo]-, disodium salt?

2,7-Naphthalenedisulfonic acid, 5-ethoxy-4-hydroxy-3-[[4-(6-methyl-2-benzothiazolyl)phenyl]azo]-, disodium salt has molecular formula C26H19N3Na2O8S3 and molecular weight 643.6 g/mol.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "2,7-Naphthalenedisulfonic acid, 5-ethoxy-4-hydroxy-3-[[4-(6-methyl-2-benzothiazolyl)phenyl]azo]-, disodium salt (CAS 2846-11-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1224401-4 (accessed 2026-10-24).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.