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N-Phenyl-o-phenylenediamine

Also known as: 2-Aminodiphenylamine, N-Phenyl-1,2-phenylenediamine, N1-Phenylbenzene-1,2-diamine, o-Semidine, 1,2-Benzenediamine, N-phenyl-

N-Phenyl-o-phenylenediamine (CAS 534-85-0) is a compound in the Organic Bases category listed in the Jingsj chemical database. It has the molecular formula C12H12N2 and a molecular weight of 184.237 g/mol. Key properties include a melting point of 77-80 °C(lit.), a boiling point of 332.7±25.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 181.6±26.8 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed, H315 — Causes skin irritation and H332 — Harmful if inhaled. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
534-85-0
Jingsj CID
J-812595-9
Molecular Formula
C12H12N2
Molecular Weight
184.237 g/mol
Category
Organic Bases
Last updated
8/21/2026

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Physicochemical Properties

Melting Point77-80 °C(lit.)
Boiling Point332.7±25.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point181.6±26.8 °C
Exact Mass184.100052
PSA38.05000
LogP2.02
Vapor Pressure0.0±0.7 mmHg at 25°C
Refractive Index1.684

GHS Safety & Compliance

IrritantSignal word: Warning
  • H302 — Harmful if swallowed
  • H315 — Causes skin irritation
  • H332 — Harmful if inhaled

Customs & Trade Information

HS Code2921590090
Summary2921590090. 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 N-Phenyl-o-phenylenediamine?

The CAS number of N-Phenyl-o-phenylenediamine is 534-85-0.

What are the molecular formula and molecular weight of N-Phenyl-o-phenylenediamine?

N-Phenyl-o-phenylenediamine has molecular formula C12H12N2 and molecular weight 184.237 g/mol.

Is N-Phenyl-o-phenylenediamine hazardous?

N-Phenyl-o-phenylenediamine has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H315 — Causes skin irritation; H332 — Harmful if inhaled.

What are the upstream and downstream products of N-Phenyl-o-phenylenediamine?

For N-Phenyl-o-phenylenediamine, Upstream Products: 2-Nitrodiphenylamine, N-Phenylhydroxylamine, Iodobenzene; Downstream Products: 1-Phenyl-1H-benzimidazole, Phenazine, 1,2-Diphenyl-1H-benzimidazole.

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

Last updated:

How to cite: Jingsj. "N-Phenyl-o-phenylenediamine (CAS 534-85-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-812595-9 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.