2-Chlorobutane
2-Chlorobutane (CAS 78-86-4), with the molecular formula C4H9Cl and a molar mass of 92.57 g/mol, is a halogenated hydrocarbon. This flammable liquid is characterised by its use as a building block in organic synthesis and chemical manufacturing. It serves as a key intermediate in the preparation of various organic compounds, particularly within the pharmaceutical and fine chemical industries. Tech Serve Solutions supplies this compound at a high purity level suitable for research and development purposes.
- IUPAC
- sec-Butyl chloride
- Synonyms
- sec-Butyl chlorideButane, 2-chloro-CH3CH2CHClCH3

Organic Synthesis Intermediate
2-Chlorobutane is widely employed as a versatile intermediate in organic synthesis. Its reactivity allows for the introduction of the sec-butyl group into various molecular structures, facilitating the creation of more complex compounds.
Pharmaceutical Precursor
This compound serves as a precursor in the multi-step synthesis of active pharmaceutical ingredients (APIs). It is a valuable building block for creating specific carbon skeletons required in drug discovery and manufacturing.
Reagent in Chemical Research
In laboratory settings, 2-Chlorobutane is utilised as a reagent for specific chemical transformations and research applications. Its defined chemical properties make it a reliable choice for academic and industrial research.
Building Block for Fine Chemicals
As an alkyl halide, 2-Chlorobutane functions as a fundamental building block for the synthesis of diverse fine chemicals. It enables chemists to construct specific functional groups and molecular architectures.
| Molecular weight | 92.57 |
|---|---|
| Linear formula | CH3CH2CHClCH3 |
| Assay | ≥99% |
| Boiling point | 68-70 °C(lit.) |
| Density | 0.873 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.396(lit.) |
| Melting point | −140 °C(lit.) |

Hazard statements
- H225Highly flammable liquid and vapour
Precautionary statements
- P210Keep away from heat, sparks and open flames. No smoking
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | -15 °C / 5 °F |
| Transport (UN / ADR) | UN 1127 3 / PGII |
| Water hazard class (WGK, DE) | 2 |
| Hazard codes (EU) | F |
| Risk statements (R) | 11 |
| Safety statements (S) | 7/9-16-29 |
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 2-Chlorobutane primarily used for?
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2-Chlorobutane is primarily used as an intermediate in organic synthesis, a precursor in pharmaceutical manufacturing, and a reagent in chemical research and fine chemical production.
What is the CAS number and molecular formula for 2-Chlorobutane?
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The CAS number for 2-Chlorobutane is 78-86-4, and its molecular formula is CH3CH2CHClCH3.
What grade and purity does Tech Serve Solutions supply for 2-Chlorobutane?
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Tech Serve Solutions supplies 2-Chlorobutane with an assay of ≥99%. We do not represent this product as USP, BP, EP, or any other pharmacopoeia grade.
How should 2-Chlorobutane be handled safely?
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2-Chlorobutane is a highly flammable liquid (Flash Point: -15 °C) and requires careful handling. Use in a well-ventilated area, away from ignition sources, and wear appropriate personal protective equipment including eyeshields, gloves, and a suitable respirator.
Is 2-Chlorobutane controlled or scheduled?
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Based on the provided data, there is no indication that 2-Chlorobutane is a controlled or scheduled substance.
How is 2-Chlorobutane packed, shipped, or exported?
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2-Chlorobutane is shipped under UN 1127, Hazard Class 3, Packing Group II, reflecting its flammable nature. Specific packaging and export details are available upon request.
How can I request a quote or sample of 2-Chlorobutane?
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To request a quote or sample of 2-Chlorobutane, please contact our sales department through the website or by phone, providing your specific requirements.
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