1-Butanol
1-Butanol (CAS: 71-36-3), with the linear formula CH3(CH2)3OH and a molecular weight of 74.12 g/mol, is a primary alcohol. It is a clear, colourless liquid with a characteristic fruity odour. 1-Butanol is widely utilised as a solvent in paints, lacquers, and resins, and as an intermediate in the synthesis of other organic chemicals, including plasticisers and flavouring agents. Its properties make it valuable in various industrial chemical processes.
- IUPAC
- n-Butanol,Butyl alcohol
- Synonyms
- n-ButanolButyl alcohol

Solvent Applications
1-Butanol serves as an effective solvent for a variety of substances including oils, waxes, resins, and lacquers. It is commonly used in the formulation of paints, varnishes, and coatings due to its moderate evaporation rate.
Chemical Synthesis Intermediate
This primary alcohol is a key building block in organic synthesis. It is used in the production of butyl acetate, a widely used solvent and artificial flavouring, and dibutyl phthalate, a common plasticiser.
Extraction Solvent
In certain laboratory and industrial processes, 1-Butanol can be employed as an extraction solvent for various organic compounds and natural products.
Fuel Additive
1-Butanol has been explored as a potential biofuel additive, offering properties that allow it to be blended with gasoline.
| Molecular weight | 74.12 |
|---|---|
| Linear formula | CH3(CH2)3OH |
| Assay | 99.5% |
| Boiling point | 116-118 °C(lit.) |
| Density | 0.81 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.399(lit.) |
| Vapour density | 2.55 (vs air) |
| Melting point | −90 °C(lit.) |
| Autoignition temp | 649 °F |
| Storage temperature | room temp |



Hazard statements
- H226Flammable liquid and vapour
- H302Harmful if swallowed
- H315Causes skin irritation
- H318Causes serious eye damage
- H335May cause respiratory irritation
- H336May cause drowsiness or dizziness
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
| Flash point | 35 °C / 95 °F |
|---|---|
| Transport (UN / ADR) | UN 1120 3 / PGIII |
| Water hazard class (WGK, DE) | 1 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 10-22-37/38-41-67 |
| Safety statements (S) | 7/9-13-26-37/39-46 |
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-Butanol used for?
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1-Butanol is primarily used as a solvent in paints, lacquers, and resins, and as an intermediate in the synthesis of plasticisers, flavouring agents, and other organic chemicals.
What are the CAS number and formula for 1-Butanol?
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The CAS number for 1-Butanol is 71-36-3, and its linear formula is CH3(CH2)3OH.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 1-Butanol with an assay of 99.5%. This is a technical grade and TSS does not represent it as USP, BP, or EP grade.
How should 1-Butanol be handled safely?
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1-Butanol is a flammable liquid and vapour (H226). It is harmful if swallowed (H302), causes skin irritation (H315), causes serious eye damage (H318), and may cause respiratory irritation and drowsiness or dizziness (H335-H336). Handle in a well-ventilated area, away from ignition sources, and use appropriate personal protective equipment.
How is 1-Butanol packed, shipped, and exported?
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1-Butanol is shipped under UN 1120, Class 3, Packing Group III. Specific packaging and export details can be provided upon request.
How can I request a sample or quote for 1-Butanol?
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Please contact our sales team via the website or directly to request a sample or a quotation for 1-Butanol.
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