1-Chlorobutane
1-Chlorobutane (CAS: 109-69-3), with the chemical formula CH3(CH2)3Cl, is a halogenated hydrocarbon. This clear, colourless liquid is primarily used as a solvent and as a chemical intermediate in organic synthesis. Its properties make it valuable for introducing the butyl group in various chemical reactions, serving as a building block in the production of pharmaceuticals and other organic compounds.
- IUPAC
- Butyl chloride
- Synonyms
- n-Butyl chlorideButyl chloride1-Chlorobutanen-Butane, 1-chloro-

Chemical Synthesis Intermediate
1-Chlorobutane serves as a versatile alkylating agent in organic synthesis, enabling the introduction of the n-butyl group into various molecules. It is commonly used in the preparation of Grignard reagents and in the synthesis of other organometallic compounds.
Solvent Applications
Due to its solubility characteristics, 1-Chlorobutane can be employed as a solvent in certain industrial processes and laboratory applications. It is particularly useful for dissolving fats, oils, and waxes.
Precursor for Organics
This compound acts as a key building block for creating more complex organic molecules. Its reactivity allows for further functionalization, making it valuable in the research and development of new chemical entities.
| Molecular weight | 92.57 |
|---|---|
| Linear formula | CH3(CH2)3Cl |
| Assay | 99% |
| Boiling point | 77-78 °C(lit.) |
| Density | 0.886 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.402(lit.) |
| Vapour pressure | 80.1 mmHg (78.4 °C) |
| Melting point | −123 °C(lit.) |
| Vapour density | 3.2 (vs air) |
| Autoignition temp | 860 °F |
| Storage temperature | 2-8°C |
| Impurities tested | ≤0.01% water (Karl Fischer) |
| Suitability | corresponds for Infrared spectrumin accordance for sequence analysis test |

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 | -12 °C / 10.4 °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) | 9-16-29 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Evapn Residue | ≤0.0003% |
|---|
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-Chlorobutane used for?
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1-Chlorobutane is used as a solvent and a chemical intermediate in organic synthesis, particularly for introducing the butyl group and preparing Grignard reagents.
What are the CAS number and chemical formula for 1-Chlorobutane?
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The CAS number for 1-Chlorobutane is 109-69-3, and its chemical formula is CH3(CH2)3Cl.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 1-Chlorobutane with an assay of 99%. We do not represent this product as USP, BP, or EP grade unless explicitly stated in the product specifications.
How should 1-Chlorobutane be handled safely?
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1-Chlorobutane is highly flammable (Flash Point: -12 °C, H225) and should be handled with appropriate personal protective equipment, including eyeshields and gloves, away from ignition sources, and in a well-ventilated area. Refer to the Safety Data Sheet for detailed handling instructions.
Is 1-Chlorobutane shipped internationally?
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Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals like 1-Chlorobutane.
How can I request a sample or quote for 1-Chlorobutane?
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Please contact our sales team directly through our website or provide your details to request a sample or a formal quotation.
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