sodium 4-hydroxy-5-[(2-methoxy-4-nitrophenyl)azo]-6-(phenylamino)naphthalene-2-sulphonate

酸性黑 BR

Also known as: C.I. Acid Black 31, C.I. 17580, Acid Black BR, Acid Black 31, sodium 4-hydroxy-5-[(2-methoxy-4-nitrophenyl)azo]-6-(phenylamino)naphthalene-2-sulfonate, sodium,5-[2-(2-methoxy-4-nitrophenyl)hydrazinyl]-4-oxo-6-phenyliminonaphthalene-2-sulfonate

sodium 4-hydroxy-5-[(2-methoxy-4-nitrophenyl)azo]-6-(phenylamino)naphthalene-2-sulphonate (CAS 6222-55-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C23H17N4NaO7S and a molecular weight of 516.45800 g/mol. It is also known as C.I. Acid Black 31, C.I. 17580 and Acid Black BR. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 6222-55-5
Jingsj CID: J-1327024-9
Molecular Formula: C₂₃H₁₇N₄NaO₇S
Chinese Name: 酸性黑 BR
Molecular Weight: 516.45800 g/mol
Category: Organic Acids
Last updated: 8/21/2026

No offers for this compound yet.

Request a quote

Frequently Asked Questions

What is the CAS number of sodium 4-hydroxy-5-[(2-methoxy-4-nitrophenyl)azo]-6-(phenylamino)naphthalene-2-sulphonate?

The CAS number of sodium 4-hydroxy-5-[(2-methoxy-4-nitrophenyl)azo]-6-(phenylamino)naphthalene-2-sulphonate is 6222-55-5.

What are the molecular formula and molecular weight of sodium 4-hydroxy-5-[(2-methoxy-4-nitrophenyl)azo]-6-(phenylamino)naphthalene-2-sulphonate?

sodium 4-hydroxy-5-[(2-methoxy-4-nitrophenyl)azo]-6-(phenylamino)naphthalene-2-sulphonate has molecular formula C23H17N4NaO7S and molecular weight 516.45800 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "sodium 4-hydroxy-5-[(2-methoxy-4-nitrophenyl)azo]-6-(phenylamino)naphthalene-2-sulphonate (CAS 6222-55-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1327024-9 (accessed 2026-10-25).

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