(Chloromethylene)dimethyliminium chloride

Also known as: (Chloromethylene)dimethylammonium chloride, Arnold's reagent, Chlorodimethylformiminium chloride, Dimethylchloroformiminium chloride, N-(chloromethylene)-N-methylmethanaminium chloride, Vilsmeier reagent, Vilsmeier salt, Vilsmeier-Haack reagent

(Chloromethylene)dimethyliminium chloride (CAS 3724-43-4) is a compound in the Organohalogen Compounds category listed in the Jingsj chemical database. It has the molecular formula C3H7Cl2N and a molecular weight of 128.00000 g/mol. Key property: a melting point of 132 °C (dec.)(lit.). No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 3724-43-4
Jingsj CID: J-14669-0
Molecular Formula: C₃H₇Cl₂N
Molecular Weight: 128.00000 g/mol
Category: Organohalogen Compounds
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	132 °C (dec.)(lit.)
Exact Mass	126.99600
PSA	3.01000
Additional Property	reacts

Customs & Trade Information

HS Code	29252000

Frequently Asked Questions

What is the CAS number of (Chloromethylene)dimethyliminium chloride?

The CAS number of (Chloromethylene)dimethyliminium chloride is 3724-43-4.

What are the molecular formula and molecular weight of (Chloromethylene)dimethyliminium chloride?

(Chloromethylene)dimethyliminium chloride has molecular formula C3H7Cl2N and molecular weight 128.00000 g/mol.

What are the upstream and downstream products of (Chloromethylene)dimethyliminium chloride?

For (Chloromethylene)dimethyliminium chloride, Upstream Products: N,N-Dimethylformamide, Phthaloyl chloride, Oxalyl chloride; Downstream Products: 4-Chloro-7-(trifluoromethyl)quinoline, 2,4-Dichloropyrimidine, (Dimethylaminomethylene)malononitrile.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "(Chloromethylene)dimethyliminium chloride (CAS 3724-43-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-14669-0 (accessed 2026-11-09).

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