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2,5-Dichlorophenylhydrazine

Also known as: (2,5-Dichlorophenyl)hydrazine, Hydrazine, (2,5-dichlorophenyl)-, N-(2,5-Dichlorophenyl)hydrazine, 1-(2,5-Dichlorophenyl)hydrazine, NSC 6102

2,5-Dichlorophenylhydrazine (CAS 305-15-7) 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 177.03100 g/mol. Key properties include a melting point of 102-103 °C(lit.), a boiling point of 266.8ºC at 760 mmHg, a density of 1.475 g/cm3 and a flash point of 115.1ºC. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
305-15-7
Jingsj CID
J-40577-6
Molecular Formula
C6H6Cl2N2
Molecular Weight
177.03100 g/mol
Category
Organic Bases
Last updated
8/21/2026

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Physicochemical Properties

Melting Point102-103 °C(lit.)
Boiling Point266.8ºC at 760 mmHg
Density1.475 g/cm3
Flash Point115.1ºC
Exact Mass175.99100
PSA38.05000
LogP3.05230
Refractive Index1.665
Storage ConditionsKeep Cold

GHS Safety & Compliance

Acute ToxicitySignal word: Danger
  • H301 — Toxic if swallowed
  • H319 — Causes serious eye irritation

Customs & Trade Information

HS Code2928000090
Summary2928000090 other organic derivatives of hydrazine or of hydroxylamine VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 2,5-Dichlorophenylhydrazine?

The CAS number of 2,5-Dichlorophenylhydrazine is 305-15-7.

What are the molecular formula and molecular weight of 2,5-Dichlorophenylhydrazine?

2,5-Dichlorophenylhydrazine has molecular formula C6H6Cl2N2 and molecular weight 177.03100 g/mol.

Is 2,5-Dichlorophenylhydrazine hazardous?

2,5-Dichlorophenylhydrazine has GHS signal word Danger and hazard statements H301 — Toxic if swallowed; H319 — Causes serious eye irritation.

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-Dichlorophenylhydrazine (CAS 305-15-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-40577-6 (accessed 2026-11-09).

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