2-Methylpropene
2-Methylpropene (CAS: 115-11-7), also known as isobutylene, is a highly flammable gas with the molecular formula C4H8 and a molar mass of 56.11 g/mol. This alkene is a crucial building block in organic synthesis and a component in the production of various polymers, including butyl rubber. Its reactive double bond makes it valuable for numerous chemical transformations.
- IUPAC
- Isobutylene
- Synonyms
- IsobutyleneIsobutene2-MethylpropeneMethylpropeneTrimethylethylene
Polymer Production
2-Methylpropene is a key monomer in the synthesis of polymers like polyisobutylene and butyl rubber, which are used in applications such as inner tubes, seals, and adhesives.
Organic Synthesis Intermediate
Its reactive double bond allows 2-methylpropene to participate in various organic reactions, serving as an intermediate for the production of specialty chemicals, antioxidants, and other complex organic molecules.
Alkylation Agent
It is employed in alkylation processes, particularly in the production of fuel additives like methyl tert-butyl ether (MTBE), although its use in this specific application has been curtailed in some regions.
| Molecular weight | 56.11 |
|---|---|
| Linear formula | (CH3)2C=CH2 |
| Assay | 99% |
| Boiling point | −6.9 °C(lit.) |
| Vapour pressure | 3278 mmHg (37.7 °C) |
| Vapour density | 2 (vs air) |
| Autoignition temp | 869 °F |
| Melting point | −140 °C |
Hazard statements
- H220Extremely flammable gas
- H280Contains gas under pressure; may explode if heated
Precautionary statements
- P210Keep away from heat, sparks and open flames. No smoking
- P410Protect from sunlight
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US) |
|---|---|
| Flash point | -80 °C / -112 °F |
| Transport (UN / ADR) | UN 1055 2.1 |
| Water hazard class (WGK, DE) | nwg |
| Hazard codes (EU) | F+ |
| Risk statements (R) | 12 |
| Safety statements (S) | 9-16-33 |
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 2-Methylpropene used for?
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2-Methylpropene is primarily used as a monomer in the production of polymers such as polyisobutylene and butyl rubber, and as an intermediate in organic synthesis for specialty chemicals.
What is the CAS number and molecular formula for 2-Methylpropene?
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The CAS number for 2-Methylpropene is 115-11-7, and its molecular formula is C4H8.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 2-Methylpropene with an assay of 99%. We do not represent this product as USP, BP, or EP grade.
How should 2-Methylpropene be handled safely?
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2-Methylpropene is extremely flammable and can cause gas under pressure. Handle with extreme care, keeping away from heat, sparks, and open flames. Ensure adequate ventilation and use appropriate personal protective equipment, including eyeshields, gloves, and a full-face respirator.
Is 2-Methylpropene a controlled substance?
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The provided data does not indicate that 2-Methylpropene is a controlled substance.
How is 2-Methylpropene packed and exported by TSS?
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As a specialty gas, 2-Methylpropene is supplied in appropriate cylinders for safe transport. TSS is an experienced global exporter.
How can I request a quote or sample for 2-Methylpropene?
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Please contact our sales team directly via the website or by phone to request a quote or sample for 2-Methylpropene.
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