Molekula

(Chloromethylene)dimethylammonium chloride

SKU 90027093 CAS 3724-43-4 ClCH=N(CH3)2Cl MW 128.00 Available on enquiry

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Chloromethylene)dimethylammonium chloride is a reactive quaternary ammonium salt used in organic synthesis, particularly as the Vilsmeier reagent for Vilsmeier–Haack formylation and as a chlorinating and dehydrating agent. It is a crystalline solid with a molecular weight of 128.00 g/mol, stored at 2 to 8 °C. Its CAS number is 3724-43-4, and it is classified as a hazardous substance with a signal word of Danger. Molekula supplies (Chloromethylene)dimethylammonium chloride from research to bulk quantities with full documentation and ISO 9001:2015 traceability.

This substance is available from Molekula on enquiry. Full specification, Safety Data Sheet and Certificate of Analysis documentation are provided with your quotation once our team confirms the grade and pack size you need.

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Overview

SKU: 90027093
CAS Number: 3724-43-4
IUPAC Name: chloromethylidene(dimethyl)azanium chloride
EC Number: 425-970-6
Molecular Formula: ClCH=N(CH3)2Cl
Molecular Weight: 128.00
Exact Mass: 126.9956
SMILES: C[N+](=CCl)C.[Cl-]
InChIKey: QQVDYSUDFZZPSU-UHFFFAOYSA-M
InChI: InChI=1S/C3H7ClN.ClH/c1-5(2)3-4;/h3H,1-2H3;1H/q+1;/p-1
PubChem CID: 77311

Synonyms

(Chloromethylene)dimethyliminium chloride
arnold's reagent
chloro-n,n-dimethylformiminium chloride
chloromethylidene(dimethyl)azanium;chloride
Methanaminium, N-(chloromethylene)-N-methyl-, chloride
Methanaminium, N-(chloromethylene)-N-methyl-, chloride (1:1)
N-(chloromethylene)-N-methylmethanaminium chloride
N-(Chloromethylidene)-N-methylmethanaminium chloride
N-Chloromethylene-N,N-dimethyl ammonium chloride
Vilsmeier reagent

Frequently asked questions

What is Chloromethylene)dimethylammonium chloride (CAS 3724-43-4) commonly used for?

This compound, also known as Arnold's reagent, is the Vilsmeier reagent. It is primarily used in organic synthesis for Vilsmeier–Haack formylation, where it introduces a formyl (CHO) group, and as a chlorinating and dehydrating agent, for example converting carboxylic acids to acid chlorides, alcohols to chlorides and amides to nitriles. It is also used in the preparation of nitrogen-containing heterocycles.

What is the molecular formula and molecular weight of Chloromethylene)dimethylammonium chloride?

The molecular formula is ClCH=N(CH₃)₂Cl, and the molecular weight is 128.00 g/mol.

How should Chloromethylene)dimethylammonium chloride be stored?

Store at 2–8°C in a cool, dry place, away from incompatible substances. Follow proper chemical storage protocols for hazardous materials.

What grades or purities of Chloromethylene)dimethylammonium chloride does Molekula supply?

Molekula supplies this compound in analytical and synthesis-grade purity, typically ≥95% by HPLC or GC, depending on the intended application.

Can Molekula supply Chloromethylene)dimethylammonium chloride in bulk quantities?

Yes, we can supply this compound in bulk, with minimum order quantities (MOQs) tailored to your needs—contact us for specific packaging and pricing details.

What documentation comes with an order of Chloromethylene)dimethylammonium chloride?

Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS/SDS), and a packing list with batch-specific details.

Related products

Molekula has supplied fine chemicals and biochemicals since 1999, and its facilities are ISO 9001:2015 and ISO 14001:2015 certified. Every dispatched batch is logged with a batch number and matched to a Certificate of Analysis, and Safety Data Sheets are available in five languages.