Butyronitrile
Butyronitrile (CAS: 109-74-0), with the chemical formula CH3CH2CH2CN and a molecular weight of 69.11 g/mol, is a clear, colourless liquid. It belongs to the class of organic compounds known as nitriles. This versatile chemical serves as a key building block in organic synthesis, contributing to the creation of more complex molecules. Its properties make it valuable in the production of pharmaceuticals and other fine chemicals.
- IUPAC
- Propyl cyanide

Organic Synthesis Intermediate
Butyronitrile is widely employed as an intermediate in the synthesis of various organic compounds. Its nitrile group can undergo diverse chemical transformations, making it a foundational component for constructing complex molecular architectures.
Pharmaceutical Precursor
It serves as a precursor in the synthesis pathways of active pharmaceutical ingredients (APIs). The specific reactivity of the nitrile group allows for its incorporation into molecules with potential therapeutic applications.
Fine Chemical Production
This compound is utilised in the broader fine chemical industry for manufacturing specialised chemicals. Its role as a C4 building block is essential for developing novel compounds and materials.
| Molecular weight | 69.11 |
|---|---|
| Linear formula | CH3CH2CH2CN |
| Assay | ≥99.0% (GC) |
| Boiling point | 115-117 °C(lit.) |
| Density | 0.794 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.384(lit.)n20/D 1.384 |
| Solubility | DMF: miscible(lit.)alcohol: miscible(lit.)diethyl ether: miscible(lit.)water: very slightly soluble(lit.) |
| Melting point | −112 °C(lit.) |
| Vapour pressure | 23 mmHg (25 °C) |
| Vapour density | 2.4 (vs air) |
| Autoignition temp | 910 °F |


Hazard statements
- H225Highly flammable liquid and vapour
- H301Toxic if swallowed
- H311Toxic in contact with skin
- H331Toxic if inhaled
Precautionary statements
- P210Keep away from heat, sparks and open flames. No smoking
- P261Avoid breathing dust, fume, gas or vapours
- P280Wear protective gloves, clothing and eye/face protection
- P301IF SWALLOWED
- P311Call a POISON CENTER or doctor
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 18 °C / 64.4 °F |
| Transport (UN / ADR) | UN 2411 3/PG 2 |
| Water hazard class (WGK, DE) | 1 |
| Hazard codes (EU) | F,T |
| Risk statements (R) | 11-23/24/25 |
| Safety statements (S) | 16-36/37-45-63 |
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 Butyronitrile (CAS: 109-74-0) used for?
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Butyronitrile (CAS: 109-74-0) is primarily used as an intermediate in organic synthesis and as a precursor in the production of pharmaceuticals and fine chemicals.
What is the CAS number and chemical formula for Butyronitrile?
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The CAS number for Butyronitrile is 109-74-0, and its chemical formula is CH3CH2CH2CN.
What grade and purity does Tech Serve Solutions supply for Butyronitrile?
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Tech Serve Solutions supplies Butyronitrile with a purity of ≥99.0% (GC). We do not represent this product as USP, BP, or EP grade.
How should Butyronitrile be handled safely?
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Butyronitrile is a flammable liquid and vapour (H225), and is toxic if swallowed, in contact with skin, or if inhaled (H301-H311-H331). Handle with appropriate personal protective equipment, including eyeshields, gloves, and a suitable respirator, in a well-ventilated area, away from ignition sources.
Is Butyronitrile controlled or scheduled?
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The provided data does not indicate that Butyronitrile (CAS: 109-74-0) is a controlled or scheduled substance.
How is Butyronitrile packed and exported by TSS?
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Tech Serve Solutions, as a specialist global supplier and exporter, ensures Butyronitrile is packed and shipped in compliance with all relevant transport and export regulations for hazardous materials.
How can I request a quote or sample of Butyronitrile?
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To request a quote or sample of Butyronitrile, please contact our sales team through the TSS website or via the provided contact information.
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