Methyl-1,2-cyclopentene oxide
Methyl-1,2-cyclopentene oxide (CAS: 16240-42-9) is a cyclic epoxide with a molecular weight of 98.14 g/mol. This flammable liquid, identified as an epoxide monomer, finds utility in materials science and polymer science. It is supplied by Tech Serve Solutions for research and development purposes, conforming to specified purity levels.
- IUPAC
- 1-Methyl-1,2-epoxycyclopentane
- Synonyms
- 1-Methyl-1,2-epoxycyclopentane

Monomer for Polymer Synthesis
As an epoxide monomer, Methyl-1,2-cyclopentene oxide can be polymerised to create novel polymeric materials. Its cyclic structure offers unique properties to the resulting polymers for advanced applications.
Intermediate in Organic Synthesis
The reactive epoxide ring allows Methyl-1,2-cyclopentene oxide to serve as a versatile intermediate in complex organic synthesis pathways. It can undergo ring-opening reactions to introduce functional groups.
Materials Science Research
This compound is employed in materials science research for the development of new substances with tailored characteristics. Its incorporation into material structures can modify properties such as thermal stability and mechanical strength.
| Molecular weight | 98.14 |
|---|---|
| Empirical formula | C6H10O |
| Assay | 99% |
| Boiling point | 113 °C(lit.) |
| Density | 0.914 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.431(lit.) |
| Storage temperature | 2-8°C |


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 | 12 °C / 53.6 °F |
| Transport (UN / ADR) | UN 1993BF 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 Methyl-1,2-cyclopentene oxide used for?
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Methyl-1,2-cyclopentene oxide is primarily used as an epoxide monomer in polymer science and as an intermediate in organic synthesis and materials science research.
What is the CAS number and formula for Methyl-1,2-cyclopentene oxide?
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The CAS number is 16240-42-9, and the empirical formula is C6H10O.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Methyl-1,2-cyclopentene oxide with an assay of 99%. We do not represent this product as USP, BP, or EP grade.
How should Methyl-1,2-cyclopentene oxide be handled safely?
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Methyl-1,2-cyclopentene oxide is a highly flammable liquid and vapour (H225) that causes skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Handle with appropriate personal protective equipment, including eyeshields, gloves, and respiratory protection, in a well-ventilated area, away from ignition sources.
How is Methyl-1,2-cyclopentene oxide packed and exported?
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Methyl-1,2-cyclopentene oxide is typically packed in accordance with UN 1993 BF 3 / PGII regulations for safe transportation. As a global supplier, Tech Serve Solutions exports chemicals worldwide.
How can I request a sample or quote for Methyl-1,2-cyclopentene oxide?
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To request a sample or a quote, please contact our sales team through the website or by phone, providing your specific requirements and shipping details.
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