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. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed, H350 — May cause cancer and H410 — Very toxic to aquatic life with long lasting effects. 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
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | ≥300 °C |
|---|---|
| Boiling Point | >402ºC |
| Density | 1.156g/cm3 |
| Flash Point | 203.5ºC |
| Exact Mass | 256.05300 |
| PSA | 52.04000 |
| LogP | 5.28440 |
| Additional Property | 0.1-0.5 g/100 mL at 23.5 ºC |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H350 — May cause cancer
- H410 — Very toxic to aquatic life with long lasting effects
Customs & Trade Information
| HS Code | 2921590090 |
|---|---|
| Summary | 2921590090. other aromatic polyamines and their derivatives; salts thereof. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0% |
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 and hazard statements H302 — Harmful if swallowed; H350 — May cause cancer; H410 — Very toxic to aquatic life with long lasting effects.
What are the upstream and downstream products of Benzidine dihydrochloride?
For Benzidine dihydrochloride, Upstream Products: Benzidine, N,N-Dichloro-p-toluenesulfonamide, 1,2-Diphenylhydrazine; Downstream Products: 4,4'-Biphenyldicarbonitrile.
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 2026-10-28).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.