Malonyl chloride
Malonyl chloride (CAS: 1663-67-8), with the linear formula CH 2(COCl) 2 and a molecular weight of 140.95 g/mol, is a reactive organic compound. It serves as a valuable building block in chemical synthesis. Its primary applications involve its use in organic reactions and as an intermediate for creating more complex molecules. This acid halide is supplied by Tech Serve Solutions with an assay of 97%.
- IUPAC
- Malonyl dichloride
- Synonyms
- Malonyl dichloride

Organic Synthesis
Malonyl chloride is a versatile reagent used in various organic synthesis pathways. It is employed in the formation of malonyl derivatives, which are important intermediates in the production of pharmaceuticals and agrochemicals.
Chemical Intermediates
This compound acts as a key intermediate in the synthesis of diverse organic molecules. Its reactive nature allows for efficient carbon-carbon bond formation and the introduction of the malonyl moiety into target structures.
Building Block for Heterocycles
Malonyl chloride is utilised in the construction of various heterocyclic compounds. Its bifunctional nature facilitates cyclisation reactions, leading to the formation of complex ring systems.
| Molecular weight | 140.95 |
|---|---|
| Linear formula | CH2(COCl)2 |
| Assay | 97% |
| Boiling point | 53-55 °C/19 mmHg(lit.) |
| Density | 1.449 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.465(lit.) |
| Storage temperature | 2-8°C |


Hazard statements
- H226Flammable liquid and vapour
- H314Causes severe skin burns and eye damage
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| Protective equipment | Faceshields, full-face respirator (US), Gloves, Goggles, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 47 °C / 116.6 °F |
| Transport (UN / ADR) | UN 2920 3(8) / PGII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | C |
| Risk statements (R) | 14-34 |
| 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
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets 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 Malonyl chloride used for?
+
Malonyl chloride is primarily used as a building block in organic synthesis and as a chemical intermediate for producing more complex molecules, including heterocyclic compounds.
What is the CAS number and formula for Malonyl chloride?
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The CAS number for Malonyl chloride is 1663-67-8, and its linear formula is CH 2(COCl) 2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Malonyl chloride with an assay of 97%. This product is intended for research and chemical synthesis purposes and is not represented as USP, BP, or EP grade.
How should Malonyl chloride be handled safely?
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Malonyl chloride is a highly reactive and corrosive substance. It reacts violently with water, causes severe skin burns and eye damage, and is flammable. Handle with extreme caution in a well-ventilated area using appropriate personal protective equipment, including face shields, gloves, and respirators. Store at 2-8°C.
How is Malonyl chloride packed and shipped?
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Malonyl chloride is packed according to stringent safety standards for hazardous materials and is available for export worldwide. Shipping complies with all relevant international regulations for dangerous goods (UN 2920, Hazard Class 3(8), Packing Group II).
How can I request a quote or sample?
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To request a quote or sample of Malonyl chloride, please contact our sales team through the website or by phone, providing your specific requirements and shipping details.
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