1-Chloro-3-pentanone
1-Chloro-3-pentanone (CAS 32830-97-0) is a chlorinated ketone with the molecular formula C5H9ClO and a molar mass of 120.58 g/mol. This organic compound serves as a versatile building block in chemical synthesis. Its structure, featuring both a ketone functional group and a chlorine atom, allows for a range of chemical transformations, making it a valuable intermediate in the production of more complex molecules for research and development purposes.

Organic Synthesis Intermediate
1-Chloro-3-pentanone is utilized as a key intermediate in multi-step organic syntheses. The presence of both a reactive carbonyl group and an alkyl halide moiety facilitates diverse chemical reactions, enabling the construction of complex organic structures.
Research and Development
This compound is employed in research laboratories for the development of novel chemical entities. Its specific functional groups make it suitable for exploring new synthetic pathways and creating unique molecular architectures for various scientific investigations.
Building Block for Heterocycles
The unique structure of 1-chloro-3-pentanone makes it a useful precursor for synthesizing various heterocyclic compounds. These structures are often of interest in medicinal chemistry and materials science.
| Molecular weight | 120.58 |
|---|---|
| Linear formula | CH3CH2COCH2CH2Cl |
| Assay | 85% |
| Grade | purum |
| Boiling point | 68 °C/20 mmHg(lit.) |
| Density | 1.042 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.435(lit.) |
| Storage temperature | 2-8°C |

Hazard statements
- H226Flammable liquid and vapour
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 51 °C / 123.8 °F |
| Transport (UN / ADR) | UN 1224C 3 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Risk statements (R) | 10 |
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 1-Chloro-3-pentanone used for?
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1-Chloro-3-pentanone is primarily used as a versatile building block and intermediate in organic synthesis, particularly in research and development for creating more complex molecules and heterocyclic compounds.
What is the CAS number and formula for 1-Chloro-3-pentanone?
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The CAS number for 1-Chloro-3-pentanone is 32830-97-0, and its linear formula is CH3CH2COCH2CH2Cl.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 1-Chloro-3-pentanone with a purity of at least 85% (purum grade). We do not represent this product as USP, BP, or EP grade.
How should 1-Chloro-3-pentanone be handled and stored?
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1-Chloro-3-pentanone is a flammable liquid (H226) and should be handled with appropriate personal protective equipment, including eyeshields, gloves, and respiratory protection. It should be stored under refrigeration at 2-8°C.
Is 1-Chloro-3-pentanone a controlled substance?
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The provided data does not indicate that 1-Chloro-3-pentanone is a controlled substance.
How is 1-Chloro-3-pentanone packed, shipped, and exported?
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1-Chloro-3-pentanone is shipped as a flammable liquid (UN 1224, Class 3, Packing Group III). TSS exports fine chemicals globally, adhering to all relevant shipping regulations.
How can I request a sample or quote for 1-Chloro-3-pentanone?
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Please contact our sales department through our website or directly via email to request a sample or obtain a quotation for 1-Chloro-3-pentanone.
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