Isobutyl vinyl ether
Isobutyl vinyl ether (CAS 109-53-5) is a volatile, flammable liquid with the linear formula (CH3)2CHCH2OCH=CH2 and a molecular weight of 100.16 g/mol. This vinyl ether is characterised by its reactive double bond, making it a valuable monomer. It is primarily used in polymer science and materials science for the synthesis of various polymers and copolymers.
- IUPAC
- Vinyl isobutyl ether
- Synonyms
- Vinyl isobutyl ether

Monomer for Polymer Synthesis
Isobutyl vinyl ether serves as a key monomer in the production of poly(isobutyl vinyl ether) and various copolymers. Its vinyl group readily undergoes cationic polymerisation.
Materials Science Intermediate
As a reactive intermediate, it finds application in materials science for the development of specialised polymers with tailored properties. These can include coatings, adhesives, and resins.
Research and Development
This compound is utilised in research laboratories for exploring new polymer architectures and organic synthesis pathways. Its specific reactivity allows for diverse chemical transformations.
| Molecular weight | 100.16 |
|---|---|
| Linear formula | (CH3)2CHCH2OCH=CH2 |
| Assay | 99% |
| Boiling point | 82-83 °C(lit.) |
| Density | 0.768 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.395(lit.) |
| Vapour pressure | 68 mmHg (20 °C) |
| Melting point | −112 °C(lit.) |
| Vapour density | 3.45 (vs air) |
| Contains / stabiliser | 0.1% potassium hydroxide as stabilizer |


Hazard statements
- H225Highly flammable liquid and vapour
- H315Causes skin irritation
- H412Harmful to aquatic life with long-lasting effects
Precautionary statements
- P210Keep away from heat, sparks and open flames. No smoking
- P273Avoid release to the environment
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | -15 °C / 5 °F |
| Transport (UN / ADR) | UN 1304 3 / PGII |
| Water hazard class (WGK, DE) | 1 |
| Hazard codes (EU) | F,Xi |
| Risk statements (R) | 11-38-52/53 |
| Safety statements (S) | 16-23-24/25-33-61 |
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 Vinyl Ether used for?
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Isobutyl vinyl ether (CAS 109-53-5) is primarily used as a monomer in polymer synthesis and as an intermediate in materials science and organic research.
What is the CAS number and formula for Isobutyl Vinyl Ether?
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The CAS number is 109-53-5 and the linear formula is (CH3)2CHCH2OCH=CH2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Isobutyl vinyl ether with an assay of 99%. This is a technical/research grade material, and TSS does not represent it as USP, BP, EP, or other pharmacopoeia grades.
How should Isobutyl Vinyl Ether be handled safely?
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Isobutyl vinyl ether is highly flammable (H225) and a skin irritant (H315), with potential for long-term aquatic harm (H412). Handle with appropriate personal protective equipment, including eyeshields, gloves, and a suitable respirator, in a well-ventilated area, away from ignition sources. Always consult the Safety Data Sheet.
How is Isobutyl Vinyl Ether packed and exported?
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Tech Serve Solutions exports Isobutyl vinyl ether globally. Packaging is handled according to international regulations for hazardous materials, typically in UN-approved containers suitable for flammable liquids.
How can I request a quote or sample for Isobutyl Vinyl Ether?
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Please contact our sales team via the website or direct email to request a quote or a sample of Isobutyl vinyl ether.
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