4,4'-Diamino-[1,1'-biphenyl]-2,2'-disulfonic acid

2,2'-联苯胺二磺酸

Also known as: Benzidine-2,2'-disulfonic acid, 2,2'-Benzidinedisulfonic acid, 2,2'-Disulfo-4,4'-diaminobiphenyl, 4,4'-Diaminobiphenyl-2,2'-disulfonic acid, 5-amino-2-(4-amino-2-sulfophenyl)benzenesulfonic acid, BDSA, Benzidine-2,2'-disulphonic acid, [1,1'-Biphenyl]-2,2'-disulfonic acid, 4,4'-diamino-

4,4'-Diamino-[1,1'-biphenyl]-2,2'-disulfonic acid (CAS 117-61-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C12H12N2O6S2 and a molecular weight of 344.363 g/mol. It is also known as Benzidine-2,2'-disulfonic acid, 2,2'-Benzidinedisulfonic acid and 2,2'-Disulfo-4,4'-diaminobiphenyl. Key properties include a melting point of 175ºC and a density of 1.7±0.1 g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 117-61-3
Jingsj CID: J-1116723-1
Molecular Formula: C₁₂H₁₂N₂O₆S₂
Chinese Name: 2,2'-联苯胺二磺酸
Molecular Weight: 344.363 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	175ºC
Density	1.7±0.1 g/cm3

Frequently Asked Questions

What is the CAS number of 4,4'-Diamino-[1,1'-biphenyl]-2,2'-disulfonic acid?

The CAS number of 4,4'-Diamino-[1,1'-biphenyl]-2,2'-disulfonic acid is 117-61-3.

What are the molecular formula and molecular weight of 4,4'-Diamino-[1,1'-biphenyl]-2,2'-disulfonic acid?

4,4'-Diamino-[1,1'-biphenyl]-2,2'-disulfonic acid has molecular formula C12H12N2O6S2 and molecular weight 344.363 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. "4,4'-Diamino-[1,1'-biphenyl]-2,2'-disulfonic acid (CAS 117-61-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1116723-1 (accessed 2026-10-25).

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