Allyl ethyl ether
Allyl ethyl ether (CAS: 557-31-3), with the linear formula C2H5OCH2CH=CH2 and a molecular weight of 86.13 g/mol, is a volatile organic compound. It is a clear, colourless liquid primarily utilised as a building block in organic synthesis. Its reactive allyl group allows for various chemical transformations, making it a useful intermediate in the production of more complex molecules for research and industrial applications. It is supplied by TSS with an assay of ≥95% (GC).
- IUPAC
- 3-Ethoxypropene,Ethyl allyl ether

Organic Synthesis Intermediate
Allyl ethyl ether serves as a versatile intermediate in organic chemistry. Its allyl functionality can participate in a wide range of reactions, including addition, oxidation, and polymerisation, enabling the construction of diverse molecular structures.
Building Block for Fine Chemicals
This compound acts as a valuable building block for the synthesis of fine chemicals. Its structure allows for the introduction of both ether and alkene functionalities into target molecules, finding use in the development of novel compounds for various sectors.
Research and Development
In research settings, allyl ethyl ether is employed as a reagent for exploring new synthetic pathways and developing innovative chemical processes. Its availability facilitates experimental work in academic and industrial laboratories.
| Molecular weight | 86.13 |
|---|---|
| Linear formula | C2H5OCH2CH=CH2 |
| Assay | ≥95% (GC) |
| Boiling point | 65-66 °C(lit.) |
| Density | 0.76 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.388(lit.)n20/D 1.388 |
| Impurities tested | 1-5% ethanol |


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 | -21 °C / -5.8 °F |
| Transport (UN / ADR) | UN 2335 3/PG 2 |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | F,Xi |
| Risk statements (R) | 11-36/37/38 |
| Safety statements (S) | 16-26 |
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 Allyl ethyl ether used for?
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Allyl ethyl ether is primarily used as a building block and intermediate in organic synthesis for the creation of fine chemicals and in research and development activities.
What is the CAS number and formula for Allyl ethyl ether?
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The CAS number for Allyl ethyl ether is 557-31-3, and its linear formula is C2H5OCH2CH=CH2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Allyl ethyl ether with an assay of ≥95% (GC). It is not supplied as USP, BP, EP, or pharmacopoeia grade.
How should Allyl ethyl ether be handled safely?
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Allyl ethyl ether is a highly flammable liquid and vapour (H225) causing skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Handle in a well-ventilated area, away from ignition sources, wearing appropriate personal protective equipment including eyeshields and chemical-resistant gloves. Ensure proper respiratory protection is used.
Is Allyl ethyl ether a controlled substance?
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Based on the provided data, Allyl ethyl ether (CAS 557-31-3) is not listed as a controlled substance. It is classified under UN 2335.
How is Allyl ethyl ether packed and exported?
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Allyl ethyl ether is packed and exported according to relevant transport regulations for hazardous materials, identified as UN 2335, Class 3, Packing Group II. Specific packing details are available upon request.
How can I request a sample or quote for Allyl ethyl ether?
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To request a sample or quote for Allyl ethyl ether, please contact our sales team through the website or by phone, providing your specific requirements and delivery details.
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