Isobutyl isobutyrate
Isobutyl isobutyrate (CAS 97-85-8) is an ester with the linear formula (CH3)2CHCO2CH2CH(CH3)2 and a molecular weight of 144.21 g/mol. This clear, colourless liquid is primarily used as a chemical intermediate and building block in organic synthesis. Its properties make it suitable for various applications requiring ester functionalities within the chemical and research sectors.

Organic Synthesis Intermediate
Utilised as a versatile building block in the synthesis of more complex organic molecules. Its ester functionality allows for various chemical transformations.
Research and Development
Employed in laboratory settings for chemical research, exploring new synthetic pathways and developing novel compounds. Suitable for general chemical synthesis.
Fine Chemical Production
A component in the production of fine chemicals, where specific ester derivatives are required for downstream applications.
| Molecular weight | 144.21 |
|---|---|
| Linear formula | (CH3)2CHCO2CH2CH(CH3)2 |
| Assay | ≥98% |
| Boiling point | 145-152 °C(lit.) |
| Density | 0.855 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.398(lit.) |
| Vapour pressure | 1 mmHg (39.9 °C) |
| Melting point | −81 °C(lit.) |
| Autoignition temp | 810 °F |


Hazard statements
- H226Flammable liquid and vapour
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- 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 | 40 °C / 104 °F |
| Transport (UN / ADR) | UN 2528 3 / PGIII |
| Water hazard class (WGK, DE) | 2 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 10-36/37/38 |
| Safety statements (S) | 16-26-36 |
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 Isobutyl Isobutyrate primarily used for?
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Isobutyl Isobutyrate (CAS 97-85-8) is primarily used as a building block and intermediate in organic synthesis and in research and development for chemical synthesis.
What are the CAS number and chemical formula for Isobutyl Isobutyrate?
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The CAS number for Isobutyl Isobutyrate is 97-85-8, and its linear formula is (CH3)2CHCO2CH2CH(CH3)2.
What grade and purity does Tech Serve Solutions supply for Isobutyl Isobutyrate?
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Tech Serve Solutions supplies Isobutyl Isobutyrate with an assay of ≥98%. We do not represent this product as USP, BP, EP, or other pharmacopoeia grades unless explicitly stated.
What are the key safety hazards associated with Isobutyl Isobutyrate?
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Isobutyl Isobutyrate is a flammable liquid and vapour (H226) and can cause skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). Handle with appropriate personal protective equipment in a well-ventilated area.
How is Isobutyl Isobutyrate packed, shipped, and exported?
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Isobutyl Isobutyrate is shipped according to UN 2528, Class 3, Packing Group III regulations. TSS ensures compliance with all relevant shipping and export regulations for this chemical.
How can I request a sample or quote for Isobutyl Isobutyrate?
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To request a sample or a quote for Isobutyl Isobutyrate, please contact our sales team through the website or direct inquiry channels.
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