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4,5-Dichloro-1,2-benzenediamine

Also known as: 1,2-Diamino-4,5-dichlorobenzene, 4,5-Dichloro-o-phenylenediamine, 4,5-Dichlorobenzene-1,2-diamine, 4,5-Dichloro-1,2-phenylenediamine, 1,2-Dichloro-4,5-diaminobenzene, 4,5-Dichloro-o-phenylendiamine, 4,5-Dichloro-ortho-phenylenediamine

4,5-Dichloro-1,2-benzenediamine (CAS 5348-42-5) is a compound in the Organic Bases category listed in the Jingsj chemical database. It has the molecular formula C6H6Cl2N2 and a molecular weight of 177.031 g/mol. Key properties include a melting point of 158-164 °C(lit.), a boiling point of 346.3±37.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 163.3±26.5 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed, H312 — Harmful in contact with skin and H315 — Causes skin irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
5348-42-5
Jingsj CID
J-17767-3
Molecular Formula
C6H6Cl2N2
Molecular Weight
177.031 g/mol
Category
Organic Bases
Last updated
8/21/2026

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Physicochemical Properties

Melting Point158-164 °C(lit.)
Boiling Point346.3±37.0 °C at 760 mmHg
Density1.5±0.1 g/cm3
Flash Point163.3±26.5 °C
Exact Mass175.990799
PSA52.04000
LogP2.13
Vapor Pressure0.0±0.8 mmHg at 25°C
Refractive Index1.679

GHS Safety & Compliance

IrritantSignal word: Warning
  • H302 — Harmful if swallowed
  • H312 — Harmful in contact with skin
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H332 — Harmful if inhaled
  • H335 — May cause respiratory irritation

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 4,5-Dichloro-1,2-benzenediamine?

The CAS number of 4,5-Dichloro-1,2-benzenediamine is 5348-42-5.

What are the molecular formula and molecular weight of 4,5-Dichloro-1,2-benzenediamine?

4,5-Dichloro-1,2-benzenediamine has molecular formula C6H6Cl2N2 and molecular weight 177.031 g/mol.

Is 4,5-Dichloro-1,2-benzenediamine hazardous?

4,5-Dichloro-1,2-benzenediamine has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H312 — Harmful in contact with skin; H315 — Causes skin irritation.

What are the upstream and downstream products of 4,5-Dichloro-1,2-benzenediamine?

For 4,5-Dichloro-1,2-benzenediamine, Upstream Products: 4,5-Dichloro-2-nitroaniline, 1,2-Dichloro-4,5-dinitrobenzene, 1,2-Dichlorobenzene; Downstream Products: 5,6-Dichloro-1-β-D-ribofuranosylbenzimidazole, 6,7-Dichloro-3-styrylquinoxalin-2-ol, 2-Bromo-5,6-dichloro-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. "4,5-Dichloro-1,2-benzenediamine (CAS 5348-42-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-17767-3 (accessed 2026-11-09).

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