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2-(Chloromethyl)benzimidazole

Also known as: 2-(Chloromethyl)-1H-benzimidazole, 1H-Benzimidazole, 2-(chloromethyl)-, 2-(chloromethyl)-1H-1,3-benzimidazole, 2-Chloromethyl-1H-benzoimidazole, AKOS BBS-00003999, MFCD00005602, EINECS 225-452-8

2-(Chloromethyl)benzimidazole (CAS 4857-04-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C8H7ClN2 and a molecular weight of 166.60800 g/mol. Key properties include a melting point of 146-148 °C (dec.)(lit.), a boiling point of 371ºC at 760 mmHg, a density of 1.356g/cm3 and a flash point of 209.9ºC. 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.
4857-04-9
Jingsj CID
J-905588-3
Molecular Formula
C8H7ClN2
Molecular Weight
166.60800 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point146-148 °C (dec.)(lit.)
Boiling Point371ºC at 760 mmHg
Density1.356g/cm3
Flash Point209.9ºC
Exact Mass166.03000
PSA28.68000
LogP2.30170
Refractive Index1.679

GHS Safety & Compliance

IrritantSignal word: Warning
  • H302 — Harmful if swallowed
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H335 — May cause respiratory irritation

Customs & Trade Information

HS Code2933990090
Summary2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. 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-(Chloromethyl)benzimidazole?

The CAS number of 2-(Chloromethyl)benzimidazole is 4857-04-9.

What are the molecular formula and molecular weight of 2-(Chloromethyl)benzimidazole?

2-(Chloromethyl)benzimidazole has molecular formula C8H7ClN2 and molecular weight 166.60800 g/mol.

Is 2-(Chloromethyl)benzimidazole hazardous?

2-(Chloromethyl)benzimidazole 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-(Chloromethyl)benzimidazole?

For 2-(Chloromethyl)benzimidazole, Upstream Products: Chloroacetic acid, o-Phenylenediamine, ethyl chloroacetate; Downstream Products: Clemizole, 1H-Benzimidazole-2-methanol, (1H-Benzimidazol-2-yl)methanamine.

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-(Chloromethyl)benzimidazole (CAS 4857-04-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-905588-3 (accessed 2026-11-09).

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