Benzidine dihydrochloride

盐酸联苯胺

Also known as: 4,4'-Diaminobiphenyl dihydrochloride, [1,1'-Biphenyl]-4,4'-diamine dihydrochloride, 4,4'-Diaminodiphenyl dihydrochloride, p,p'-Diaminodiphenyl dihydrochloride, benzidine2hcl, MFCD00040389

Benzidine dihydrochloride (CAS 531-85-1) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C12H14Cl2N2 and a molecular weight of 257.15900 g/mol. It is also known as 4,4'-Diaminobiphenyl dihydrochloride, [1,1'-Biphenyl]-4,4'-diamine dihydrochloride and 4,4'-Diaminodiphenyl dihydrochloride. Key properties include a melting point of ≥300 °C, a boiling point of >402ºC, a density of 1.156g/cm3 and a flash point of 203.5ºC. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
531-85-1
Jingsj CID
J-878588-4
Molecular Formula
C12H14Cl2N2
Chinese Name
盐酸联苯胺
Molecular Weight
257.15900 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point≥300 °C
Boiling Point>402ºC
Density1.156g/cm3
Flash Point203.5ºC

GHS Safety & Compliance

Irritant / Health Hazard / Environmental HazardSignal word: Danger

Frequently Asked Questions

What is the CAS number of Benzidine dihydrochloride?

The CAS number of Benzidine dihydrochloride is 531-85-1.

What are the molecular formula and molecular weight of Benzidine dihydrochloride?

Benzidine dihydrochloride has molecular formula C12H14Cl2N2 and molecular weight 257.15900 g/mol.

Is Benzidine dihydrochloride hazardous?

Benzidine dihydrochloride has GHS signal word Danger.

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

Last updated:

How to cite: Jingsj. "Benzidine dihydrochloride (CAS 531-85-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-878588-4 (accessed 2026-10-24).

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