Dichloromethylene-dimethyliminium chloride
Dichloromethylene-dimethyliminium chloride (CAS 33842-02-3), molecular formula [Cl2C=N(CH3)2]+Cl-, 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
- (Dichloromethylene)dimethylammonium chloride,Phosgeniminium chloride,Vilsmeier reagent

| Molecular weight | 162.45 |
|---|---|
| Linear formula | [Cl2C=N(CH3)2]+Cl- |
| Storage temperature | 2-8°C |
| Application | Dichloromethylene-dimethyliminium chloride was used as reagent in the synthesis of selenourea1 and (R)-2-(2-chloroethyl)pyrrolidine-1-carboxylic acid ethyl ester2. It was used for introducing amide chloride group into activated substrates3. |
| Melting point | 183-187 °C (dec.)(lit.) |


Hazard statements
- H314Causes severe skin burns and eye damage
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- 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 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | C |
| Risk statements (R) | 14-34-37 |
| Safety statements (S) | 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 Dichloromethylene-dimethyliminium chloride?
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Dichloromethylene-dimethyliminium chloride (CAS 33842-02-3), molecular formula [Cl2C=N(CH3)2]+Cl-, is a high-purity chemical supplied by Tech Serve Solutions for chemical synthesis applications, to USP, BP and EP standards.
What grades of Dichloromethylene-dimethyliminium chloride does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Dichloromethylene-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 Dichloromethylene-dimethyliminium chloride?
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Dichloromethylene-dimethyliminium chloride has CAS number 33842-02-3 and molecular formula [Cl2C=N(CH3)2]+Cl-. Full specifications appear in the table above and in the Certificate of Analysis.
What is the typical minimum order quantity and lead time for Dichloromethylene-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 Dichloromethylene-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 Dichloromethylene-dimethyliminium chloride be stored?
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Store Dichloromethylene-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 Dichloromethylene-dimethyliminium chloride used for?
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Dichloromethylene-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 Dichloromethylene-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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