Butyl formate
Butyl formate (CAS: 592-84-7), also known as formic acid butyl ester, is a clear, colourless liquid with the linear formula HCOO(CH2)3CH3 and a molecular weight of 102.13 g/mol. This ester is primarily utilised as a chemical intermediate and building block in organic synthesis. Its characteristics make it a useful component in various chemical processes and research applications.
- IUPAC
- Formic acid butyl ester
- Synonyms
- Formic acid, butyl estern-Butyl formateButyl ester of formic acidFormic acid n-butyl ester

Organic Synthesis Intermediate
Butyl formate serves as a valuable intermediate in the synthesis of more complex organic molecules. Its ester functionality allows for various chemical transformations.
Building Block for Chemical Synthesis
As a readily available building block, butyl formate is employed in the construction of diverse chemical structures within research and development settings.
Solvent in Specific Applications
While primarily an intermediate, its properties may lend themselves to use as a solvent in niche applications where its specific polarity and reactivity are beneficial.
| Molecular weight | 102.13 |
|---|---|
| Linear formula | HCOO(CH2)3CH3 |
| Assay | 97% |
| Boiling point | 106-107 °C(lit.) |
| Density | 0.892 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.389(lit.) |


Hazard statements
- H225Highly flammable liquid and vapour
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P210Keep away from heat, sparks and open flames. No smoking
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 14 °C / 57.2 °F |
| Transport (UN / ADR) | UN 1128 3 / PGII |
| Water hazard class (WGK, DE) | 1 |
| Hazard codes (EU) | F,Xi |
| Risk statements (R) | 11-36/37 |
| Safety statements (S) | 9-16-24-33 |
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 Butyl formate used for?
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Butyl formate is primarily used as an intermediate and building block in organic synthesis, contributing to the creation of more complex chemical compounds.
What are the CAS number and formula for Butyl formate?
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The CAS number for Butyl formate is 592-84-7, and its linear formula is HCOO(CH2)3CH3.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Butyl formate with a minimum assay of 97%. We do not represent this product as USP, BP, or EP grade.
How should Butyl formate be handled safely?
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Butyl formate is a flammable liquid and vapour (H225), causes serious eye irritation (H319), and may cause respiratory irritation (H335). Handle with appropriate personal protective equipment, including eyeshields and gloves, in a well-ventilated area, away from ignition sources.
Is Butyl formate suitable for export?
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Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, including Butyl formate, and can facilitate international shipments.
How can I request a quote or sample for Butyl formate?
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To request a quote or sample for Butyl formate, please contact our sales team through the provided channels on our website.
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