o-Phenylenediamine
Also known as: 1,2-Diaminobenzene, 1,2-Benzenediamine, 1,2-Phenylenediamine, OPD, OPDA, PODA, benzene-1,2-diamine, o-diaminobenzene, ortho-phenylenediamine
o-Phenylenediamine (CAS 95-54-5) is a compound in the Organic Bases category listed in the Jingsj chemical database. It has the molecular formula C6H8N2 and a molecular weight of 108.141 g/mol. Key properties include a melting point of 99-102 °C, a boiling point of 257.0±0.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 124.9±19.3 °C. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed, H312 — Harmful in contact with skin and H332 — Harmful if inhaled. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 95-54-5
- Jingsj CID
- J-38037-1
- Molecular Formula
- C6H8N2
- Molecular Weight
- 108.141 g/mol
- Category
- Organic Bases
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 99-102 °C |
|---|---|
| Boiling Point | 257.0±0.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 124.9±19.3 °C |
| Exact Mass | 108.068748 |
| PSA | 52.04000 |
| LogP | 0.05 |
| Additional Property | 3.7 (vs air) |
| Vapor Pressure | 0.0±0.5 mmHg at 25°C |
| Refractive Index | 1.661 |
| Additional Property | H2O: 1 tablet/10 mL, clear, colorless |
GHS Safety & Compliance
- H301 — Toxic if swallowed
- H312 — Harmful in contact with skin
- H332 — Harmful if inhaled
- H317 — May cause an allergic skin reaction
- H319 — Causes serious eye irritation
- H341 — Suspected of causing genetic defects
- H351 — Suspected of causing cancer
- H410 — Very toxic to aquatic life with long lasting effects
Customs & Trade Information
| HS Code | 2921511000 |
|---|---|
| Summary | 2921511000 benzene-1,2-diamine。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。Lowest tariff:4.0%。General tariff:11.0% |
Frequently Asked Questions
What is the CAS number of o-Phenylenediamine?
The CAS number of o-Phenylenediamine is 95-54-5.
What are the molecular formula and molecular weight of o-Phenylenediamine?
o-Phenylenediamine has molecular formula C6H8N2 and molecular weight 108.141 g/mol.
Is o-Phenylenediamine hazardous?
o-Phenylenediamine has GHS signal word Danger and hazard statements H301 — Toxic if swallowed; H312 — Harmful in contact with skin; H332 — Harmful if inhaled.
What are the upstream and downstream products of o-Phenylenediamine?
For o-Phenylenediamine, Upstream Products: 2-Nitroaniline, 1-Bromo-2-iodobenzene, (2-Aminophenyl)boronic acid; Downstream Products: N-[2-(1H-benzimidazol-2-yl)ethyl]benzamide, 2-(2-Chlorophenyl)benzimidazole, 2-Phenylbenzimidazole.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "o-Phenylenediamine (CAS 95-54-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-38037-1 (accessed 2026-11-07).
Data for reference only; verify product details with suppliers before purchase.