2-methylprop-1-ene
C4H8
Consulting for 2-methylprop-1-ene
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Identification
- CAS Number
- 115-11-7
- EC Number
- 204-066-3
- UN Number
- 1055
- Index Number
- 601-012-00-4
- PubChem CID
- 8255
Physical-chemical properties
- Molecular Formula
- C4H8
- Molar Mass
- 56.11 g/mol
- IUPAC Name
- 2-methylprop-1-ene
Chemical Identifiers
- InChI
- InChI=1S/C4H8/c1-4(2)3/h1H2,2-3H3
- InChI Key
- VQTUBCCKSQIDNK-UHFFFAOYSA-N
Overview
2-methylprop-1-ene (CAS 115-11-7) is a branched alkene gas with high flammability and reactivity characteristics used in polymer synthesis. This four-carbon olefin, also known by its IUPAC designation 2-methylprop-1-ene, represents an important building block in petrochemical manufacturing. With its molecular formula C4H8 and molecular weight of 56.11 g/mol, this gaseous hydrocarbon exhibits the typical double-bond reactivity of alkenes while offering unique steric properties due to its branched structure. The compound's EC number 204-066-3 facilitates its identification in European regulatory frameworks. Safety considerations are paramount when handling 2-methylprop-1-ene, as indicated by its classification as Flammable Gas Category 1 and Pressurized Gas under GHS regulations. The associated danger signal word and GHS02/GHS04 pictograms reflect both fire hazards and pressure risks. Its ADR Class 2 designation requires specialized transport protocols for compressed or liquefied gases. Proper ventilation, ignition source control, and pressure-rated equipment are essential safety measures. Industrial applications leverage the compound's reactive double bond for polymerization processes, particularly in producing specialized thermoplastic materials. It serves as a monomer in copolymerization reactions and as an intermediate in organic synthesis pathways. Unlike simpler alkenes such as prop-1-ene, the branched structure of 2-methylprop-1-ene provides unique polymer properties including enhanced thermal stability. Its reactivity profile differs significantly from ethers like methoxymethane, focusing primarily on addition reactions across the alkene functional group. OYSI maintains reliable supply chains for 2-methylprop-1-ene, supporting European industrial customers with technical-grade material meeting stringent quality specifications for demanding chemical manufacturing applications.
Safety & Classification
Flam. Gas 1; Press. Gas
GHS Pictograms
HHazard Statements (H-Statements)
Describe the nature and severity of the hazard
Extremely flammable gas.
Classification according to CLP Regulation (EC) No 1272/2008. The complete list of hazard and precautionary statements can be found in the Safety Data Sheet (SDS).
First Aid Measures
Transport (ADR)
| UN Number | 1055 |
| ADR Class | 2 |
| Packing Group | |
| Tunnel Code | B/D |
| Proper Shipping Name | Isobuten, unter Druck verflüssigt |
| Marine Pollutant | No |
Frequently Asked Questions
What is 2-methylprop-1-ene?
2-methylprop-1-ene is an organic compound with the molecular formula C4H8 and CAS number 115-11-7. It is a branched alkene with a molecular weight of 56.11 g/mol. This hydrocarbon features a double bond and a methyl branch, making it an isomer of butene. It exists as a pressurized gas under normal conditions and is classified as a highly flammable gas requiring careful handling and storage procedures.
What are the physicochemical properties of 2-methylprop-1-ene?
2-methylprop-1-ene is a colorless gas under standard conditions with the molecular formula C4H8. It has a molecular weight of 56.11 g/mol and belongs to the alkene family of hydrocarbons. The compound is highly volatile and exists as a pressurized gas, requiring appropriate containment systems. It exhibits typical alkene reactivity due to its carbon-carbon double bond and demonstrates low solubility in water but good solubility in organic solvents.
What is 2-methylprop-1-ene used for?
2-methylprop-1-ene serves primarily as a chemical intermediate in organic synthesis and polymer production. It is commonly used in the manufacture of various chemicals through addition reactions typical of alkenes. The compound finds applications in the production of specialty polymers and as a building block for more complex organic molecules. Its reactivity makes it valuable in industrial processes requiring controlled alkene chemistry and specialized chemical transformations.
How to handle 2-methylprop-1-ene safely?
2-methylprop-1-ene requires careful handling as a highly flammable pressurized gas. Always work in well-ventilated areas away from ignition sources, heat, and sparks. Use appropriate personal protective equipment including safety glasses, protective clothing, and ensure proper ventilation systems are in place. Handle containers carefully to prevent damage and pressure release. Implement proper grounding procedures to prevent static electricity buildup and maintain emergency procedures for gas leaks or exposure incidents.
How to store 2-methylprop-1-ene correctly?
2-methylprop-1-ene must be stored in approved pressure vessels designed for flammable gases. Store in cool, dry, well-ventilated areas away from heat sources, ignition sources, and incompatible materials. Ensure storage areas have appropriate fire suppression systems and gas detection equipment. Keep containers upright and secure to prevent falling or damage. Maintain storage temperatures within specified limits and regularly inspect containers for signs of damage or leakage.
What to do in case of contact with 2-methylprop-1-ene?
2-methylprop-1-ene exposure requires immediate response depending on the contact type. For inhalation, move the person to fresh air immediately and seek medical attention if breathing difficulties occur. In case of skin contact, remove contaminated clothing and wash affected areas with plenty of water. For eye contact, flush thoroughly with clean water for at least 15 minutes. Always seek professional medical advice for significant exposures and ensure proper ventilation to prevent gas accumulation.
How to dispose of 2-methylprop-1-ene appropriately?
2-methylprop-1-ene disposal must comply with local and national hazardous waste regulations. Never release the gas directly into the atmosphere or dispose of it through regular waste systems. Contact licensed hazardous waste disposal companies specialized in handling flammable gases. Empty containers should be properly degassed and disposed of according to pressure vessel regulations. Ensure all disposal methods meet environmental protection standards and maintain proper documentation of disposal procedures.
How to transport 2-methylprop-1-ene?
2-methylprop-1-ene is classified under ADR Class 2 as a flammable gas requiring specialized transport procedures. Use approved pressure vessels and transport containers designed for flammable gases. Ensure proper labeling with GHS02 and GHS04 pictograms and 'Danger' signal word. Transport vehicles must comply with ADR requirements for flammable gas transport, including proper ventilation, emergency equipment, and driver certification. Follow all applicable dangerous goods transport regulations during shipping.
Is 2-methylprop-1-ene subject to specific regulations?
2-methylprop-1-ene is regulated under various European chemical safety frameworks including REACH and CLP regulations. It is classified as Flam. Gas 1 and Press. Gas under CLP, requiring appropriate labeling and safety data sheets. The compound is not listed as a Substance of Very High Concern (SVHC). Users must comply with occupational safety regulations for handling flammable gases and ensure proper risk assessments and safety measures are implemented in accordance with applicable legislation.
Where to buy 2-methylprop-1-ene in Europe?
2-methylprop-1-ene is available through OYSI, a professional European distributor of chemical products specializing in industrial chemicals. As a specialized flammable gas requiring proper handling and storage facilities, it is typically supplied to qualified industrial customers with appropriate safety infrastructure. Contact OYSI directly for availability, technical specifications, and delivery options. Ensure your facilities meet all safety requirements for handling pressurized flammable gases before placing orders.
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2-methylprop-1-ene is a dangerous good. We support you with labeling, packaging, and transport documentation.
Data Sources
Classification per CLP Regulation (EC) No 1272/2008. Data from ECHA and PubChem.