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2-Chloro-1H-imidazole

Also known as: 2-Chloroimidazole, 1H-Imidazole, 2-chloro-, 2-Chloro-1H-imidazole 97%

2-Chloro-1H-imidazole (CAS 16265-04-6) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C3H3ClN2 and a molecular weight of 102.522 g/mol. Key properties include a melting point of 165-170ºC, a boiling point of 252.7±23.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 131.1±8.2 °C. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed, H315 — Causes skin irritation and H318 — Causes serious eye damage. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
16265-04-6
Jingsj CID
J-40692-8
Molecular Formula
C3H3ClN2
Molecular Weight
102.522 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point165-170ºC
Boiling Point252.7±23.0 °C at 760 mmHg
Density1.4±0.1 g/cm3
Flash Point131.1±8.2 °C
Exact Mass101.998474
PSA28.68000
LogP0.39
Vapor Pressure0.0±0.5 mmHg at 25°C
Refractive Index1.563
Storage ConditionsKeep Cold

GHS Safety & Compliance

Corrosion / IrritantSignal word: Danger
  • H302 — Harmful if swallowed
  • H315 — Causes skin irritation
  • H318 — Causes serious eye damage
  • H335 — May cause respiratory irritation

Customs & Trade Information

HS Code2933290090
Summary2933290090. other compounds containing an unfused imidazole ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 2-Chloro-1H-imidazole?

The CAS number of 2-Chloro-1H-imidazole is 16265-04-6.

What are the molecular formula and molecular weight of 2-Chloro-1H-imidazole?

2-Chloro-1H-imidazole has molecular formula C3H3ClN2 and molecular weight 102.522 g/mol.

Is 2-Chloro-1H-imidazole hazardous?

2-Chloro-1H-imidazole has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H315 — Causes skin irritation; H318 — Causes serious eye damage.

What are the upstream and downstream products of 2-Chloro-1H-imidazole?

For 2-Chloro-1H-imidazole, Upstream Products: 1-(diethoxymethyl)imidazole, 1-Trityl-1H-imidazole; Downstream Products: 2-Phenyl-1H-imidazole, 2-Chloro-4-nitro-1H-imidazole.

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-Chloro-1H-imidazole (CAS 16265-04-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-40692-8 (accessed 2026-11-09).

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