2,5-Dichloro-1,4-phenylenediamine
Also known as: 1,4-Benzenediamine, 2,5-dichloro-, 1,4-Diamino-2,5-dichlorobenzene, 1,4-Diamino-3,6-dichlorobenzene, 2,5-Dichloro-p-phenylenediamine, 2,5-Dichlorobenzene-1,4-diamine, 2,5-Dichloro-1,4-benzenediamine, p-Phenylenediamine, 2,5-dichloro-, EINECS 243-512-1, MFCD00007902
2,5-Dichloro-1,4-phenylenediamine (CAS 20103-09-7) 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 164-166 °C (dec.)(lit.), a boiling point of 303.7±37.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 137.5±26.5 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed, H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 20103-09-7
- Jingsj CID
- J-27654-0
- Molecular Formula
- C6H6Cl2N2
- Molecular Weight
- 177.031 g/mol
- Category
- Organic Bases
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 164-166 °C (dec.)(lit.) |
|---|---|
| Boiling Point | 303.7±37.0 °C at 760 mmHg |
| Density | 1.5±0.1 g/cm3 |
| Flash Point | 137.5±26.5 °C |
| Exact Mass | 175.990799 |
| PSA | 52.04000 |
| LogP | 1.76 |
| Vapor Pressure | 0.0±0.6 mmHg at 25°C |
| Refractive Index | 1.679 |
| Storage Conditions | 2-8℃ |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2921519090 |
|---|---|
| Summary | 2921519090. o-, m-, p-phenylenediamine, diaminotoluenes, and their derivatives; salts thereof. VAT:17.0%. Tax rebate rate:17.0%. . MFN tariff:6.5%. General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 2,5-Dichloro-1,4-phenylenediamine?
The CAS number of 2,5-Dichloro-1,4-phenylenediamine is 20103-09-7.
What are the molecular formula and molecular weight of 2,5-Dichloro-1,4-phenylenediamine?
2,5-Dichloro-1,4-phenylenediamine has molecular formula C6H6Cl2N2 and molecular weight 177.031 g/mol.
Is 2,5-Dichloro-1,4-phenylenediamine hazardous?
2,5-Dichloro-1,4-phenylenediamine has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H315 — Causes skin irritation; H319 — Causes serious eye irritation.
What are the upstream and downstream products of 2,5-Dichloro-1,4-phenylenediamine?
For 2,5-Dichloro-1,4-phenylenediamine, Upstream Products: 2,5-Dichloro-4-nitroaniline, 1,4-Naphthoquinone, 2,5-Dichloro-1,4-benzoquinone; Downstream Products: 1,2,4,5-Tetrachlorobenzene, 2,5-Dichloro-1,4-benzoquinone.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2,5-Dichloro-1,4-phenylenediamine (CAS 20103-09-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-27654-0 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.