(Chloromethylene)dimethyliminium chloride
(Chloromethylene)dimethyliminium chloride (CAS 3724-43-4), molecular formula ClCH=N(CH3)2Cl, is a high-purity chemical supplied by Tech Serve Solutions for chemical synthesis applications, to pharmacopoeia specification (USP, BP, EP). Every batch is tested and ships with a Certificate of Analysis; MSDS and technical data sheets are available on request. Tech Serve Solutions has supplied laboratory reagents, fine chemicals and pharmaceutical intermediates worldwide since 1998.
- IUPAC
- (Chlormethylene)dimethylammonium chloride,Arnold′s reagent,Dimethylchloroformiminium chloride,Vilsmeier reagent

| Molecular weight | 128.00 |
|---|---|
| Linear formula | ClCH=N(CH3)2Cl |
| Assay | 95% |
| Storage temperature | 2-8°C |
| Impurities tested | <5% DMF |
| Application | Reagent used to prepare |
| Melting point | 132 °C (dec.)(lit.) |



Hazard statements
- H302Harmful if swallowed
- H314Causes severe skin burns and eye damage
- H360D
Precautionary statements
- P201Obtain special instructions before use
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| Protective equipment | Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
|---|---|
| Transport (UN / ADR) | UN 3261 8 / PGII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | T |
| Risk statements (R) | 61-14-22-35 |
| Safety statements (S) | 53-26-36/37/39-45 |
| Supplemental hazards | Reacts violently with water. |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Supplied to USP, BP and EP standards. Every batch ships with a Certificate of Analysis (assay, identity, purity); MSDS and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is (Chloromethylene)dimethyliminium chloride?
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(Chloromethylene)dimethyliminium chloride (CAS 3724-43-4), molecular formula ClCH=N(CH3)2Cl, is a high-purity chemical supplied by Tech Serve Solutions for chemical synthesis applications, to USP, BP and EP standards.
What grades of (Chloromethylene)dimethyliminium chloride does Tech Serve Solutions supply?
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Tech Serve Solutions supplies (Chloromethylene)dimethyliminium chloride in USP, BP, EP and reagent/AR grades. Custom specifications for nutraceutical or specialty pharmaceutical applications are available — contact our technical sales team.
What is the CAS number and molecular formula of (Chloromethylene)dimethyliminium chloride?
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(Chloromethylene)dimethyliminium chloride has CAS number 3724-43-4 and molecular formula ClCH=N(CH3)2Cl. Full specifications appear in the table above and in the Certificate of Analysis.
What is the typical minimum order quantity and lead time for (Chloromethylene)dimethyliminium chloride?
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Sample quantities are available for technical evaluation; bulk MOQ depends on grade and packaging. In-stock material typically ships in 7–10 working days; custom-spec orders take 3–4 weeks. Tech Serve Solutions ships worldwide with full export documentation.
Do you provide a Certificate of Analysis (CoA) with each shipment?
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Yes. Every batch of (Chloromethylene)dimethyliminium chloride ships with a Certificate of Analysis covering assay, identity and purity tests, plus pharmacopoeia conformance where applicable. MSDS and TDS documents are available on request before order placement.
How should (Chloromethylene)dimethyliminium chloride be stored?
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Store (Chloromethylene)dimethyliminium chloride in its original sealed container in a cool, dry place away from direct sunlight and incompatible materials, in line with the storage guidance on the Safety Data Sheet. Reseal between dispensings.
What is (Chloromethylene)dimethyliminium chloride used for?
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(Chloromethylene)dimethyliminium chloride is used in chemical synthesis applications across pharmaceutical, research and industrial settings. Our technical team can advise on suitability for your specific process.
How do I request a quote for (Chloromethylene)dimethyliminium chloride?
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Request a quote with your required grade, quantity and destination via https://www.techservesolutions.in/contact or email info@techservesolutions.in. We respond with specifications, a Certificate of Analysis and pricing.
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