1-Butenyl ethyl ether, mixture of cis and trans
1-Butenyl ethyl ether (CAS 929-05-5) is an organic compound with the molecular formula CH3CH2OCH=CHCH2CH3 and a molecular weight of 100.16 g/mol. This acyclic alkene is supplied by Tech Serve Solutions as a mixture of cis and trans isomers with an assay of 97%. It serves as a valuable building block in organic synthesis and chemical research, offering a reactive double bond and an ether linkage for diverse chemical transformations.
- IUPAC
- 1-Ethoxy-1-butene
- Synonyms
- 1-Ethoxy-1-buteneVinyl ethyl ether, 1-propenyl- (mixture of isomers)

Organic Synthesis Intermediate
Utilised as a versatile building block in the synthesis of more complex organic molecules. Its ether and alkene functionalities allow for participation in various addition and substitution reactions.
Chemical Research Reagent
Employed in laboratory settings for research and development purposes. It can be used to explore novel synthetic pathways or to study reaction mechanisms involving vinyl ethers.
Alkene Chemistry Studies
Serves as a model compound for investigating the reactivity of vinyl ethers and their participation in reactions such as polymerisation or cycloadditions.
| Molecular weight | 100.16 |
|---|---|
| Linear formula | CH3CH2OCH=CHCH2CH3 |
| Assay | 97% |
| Boiling point | 94-95 °C(lit.) |
| Density | 0.778 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.4060 |


Hazard statements
- H225Highly flammable liquid and vapour
- H315Causes skin irritation
- 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 | 6 °C / 42.8 °F |
| Transport (UN / ADR) | UN 3271 3 / PGII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | F,Xi |
| Risk statements (R) | 11-36/37/38 |
| 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 1-Butenyl ethyl ether used for?
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1-Butenyl ethyl ether is primarily used as a building block in organic synthesis and as a reagent in chemical research. Its structure allows for various chemical transformations.
What are the CAS number and chemical formula for 1-Butenyl ethyl ether?
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The CAS number for 1-Butenyl ethyl ether is 929-05-5, and its linear chemical formula is CH3CH2OCH=CHCH2CH3.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 1-Butenyl ethyl ether with an assay of 97%. We do not represent this product as meeting any specific pharmacopoeia standards such as USP, BP, or EP.
What are the safety considerations for handling 1-Butenyl ethyl ether?
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This compound is highly flammable (H225) and can cause skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). It requires careful handling with appropriate personal protective equipment, including safety goggles, gloves, and respiratory protection, in a well-ventilated area.
How is 1-Butenyl ethyl ether packed and shipped?
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1-Butenyl ethyl ether is classified as UN 3271, Class 3, Packing Group II, indicating it is a flammable liquid. It is shipped according to relevant transport regulations for hazardous materials.
How can I request a quote or sample?
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Please contact the Tech Serve Solutions sales team with your specific requirements to request a quote or sample of 1-Butenyl ethyl ether.
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