But-1-yne
C4H6
but-1-yne
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Identification
- CAS Number
- 107-00-6
- EC Number
- 203-451-3
- UN Number
- 2452
- PubChem CID
- 7846
Physical-chemical properties
- Molecular Formula
- C4H6
- Molar Mass
- 54.09 g/mol
- IUPAC Name
- but-1-yne
Chemical Identifiers
- InChI
- InChI=1S/C4H6/c1-3-4-2/h1H,4H2,2H3
- InChI Key
- KDKYADYSIPSCCQ-UHFFFAOYSA-N
Overview
But-1-yne (CAS 107-00-6) is a terminal alkyne hydrocarbon with a triple bond at the first carbon position, exhibiting high reactivity and flammability characteristics. But-1-yne represents a fundamental building block in organic chemistry, belonging to the alkyne family of unsaturated hydrocarbons. This four-carbon compound features a distinctive terminal triple bond that imparts significant chemical reactivity, making it valuable for various synthetic applications in industrial chemistry. The molecule's linear structure and electron-rich triple bond enable it to participate in numerous addition reactions, cycloadditions, and coupling reactions that are essential in pharmaceutical intermediates and specialty chemical manufacturing. As a highly flammable gas under normal conditions, but-1-yne requires careful handling and storage protocols. The compound is classified under ADR Class 2, indicating its gaseous nature and associated transport regulations. Its volatility and reactivity necessitate inert atmosphere storage and specialized equipment for safe handling. Unlike simpler gases such as nitrous oxide, but-1-yne presents additional considerations due to its hydrocarbon nature and potential for explosive mixtures with air. Industrial applications of but-1-yne include its use as a chemical intermediate in the synthesis of pharmaceuticals, agrochemicals, and specialty polymers. The compound serves as a key starting material for producing butanol derivatives and various organic compounds through hydrogenation, halogenation, and other addition reactions. Additionally, it finds application in research and development for novel synthetic methodologies and as a reagent in academic laboratories. OYSI provides but-1-yne to European markets with comprehensive technical support and regulatory compliance documentation for industrial customers requiring reliable access to this specialized alkyne compound.
Safety & Classification
No Hazard Classification
This substance is not classified as hazardous according to CLP Regulation (EC) No 1272/2008.
Transport (ADR)
| UN Number | 2452 |
| ADR Class | 2 |
| Packing Group | |
| Tunnel Code | B/D |
| Proper Shipping Name | Ethylacetylen, stabilisiert, unter Druck verflüssigt |
| Marine Pollutant | No |
Frequently Asked Questions
What is but-1-yne?
But-1-yne is an alkyne hydrocarbon with the molecular formula C4H6 and CAS number 107-00-6. It belongs to the family of terminal alkynes, featuring a triple bond at the first carbon position. With a molecular weight of 54.09 g/mol, this organic compound serves as an important building block in organic synthesis and industrial chemical processes.
What are the physicochemical properties of but-1-yne?
But-1-yne is a colorless gas at room temperature with a characteristic acetylene-like odor. It has a boiling point of approximately 8.1°C and is slightly soluble in water but readily soluble in organic solvents such as alcohols and ethers. The compound is highly flammable and lighter than air, with specific gravity around 0.67.
What is but-1-yne used for?
But-1-yne serves primarily as an intermediate in organic synthesis for producing pharmaceuticals, agrochemicals, and specialty chemicals. It is used in alkylation reactions, cycloaddition processes, and as a starting material for manufacturing various organic compounds. The compound also finds applications in polymer chemistry and as a building block for complex molecular structures.
How to handle but-1-yne safely?
But-1-yne requires careful handling due to its flammable nature and gas form. Use appropriate personal protective equipment including safety goggles, gloves, and work in well-ventilated areas or fume hoods. Eliminate ignition sources, use explosion-proof equipment, and ensure proper grounding. Handle containers carefully to prevent leaks and maintain emergency procedures for gas release scenarios.
How to store but-1-yne correctly?
But-1-yne should be stored in cool, dry, well-ventilated areas away from heat sources, sparks, and open flames. Keep containers tightly sealed and store separately from oxidizing agents and incompatible materials. Maintain storage temperatures below 25°C and ensure proper labeling. Use appropriate gas storage equipment designed for flammable gases and implement leak detection systems.
What to do in case of contact with but-1-yne?
But-1-yne exposure requires immediate response depending on the route of contact. 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 with soap and water. For eye contact, rinse thoroughly with water for at least 15 minutes and consult a physician.
How to dispose of but-1-yne appropriately?
But-1-yne disposal must comply with local and national waste regulations as a flammable chemical waste. Contact licensed waste disposal companies specialized in handling flammable gases and organic solvents. Never discharge into drains, soil, or waterways. Ensure proper container handling and labeling during disposal, and maintain documentation of waste transfer according to regulatory requirements.
How to transport but-1-yne?
But-1-yne is classified under ADR Class 2 (gases) for transportation purposes. Transport requires specialized containers designed for flammable gases, proper labeling with hazard placards, and compliance with dangerous goods regulations. Use certified transport companies experienced in handling flammable chemical gases and ensure proper documentation accompanies shipments throughout the transport chain.
Is but-1-yne subject to specific regulations?
But-1-yne is regulated under various European chemical legislation including REACH registration requirements and CLP classification standards. It is not listed as an SVHC substance, but manufacturers and importers must comply with standard chemical safety requirements. Users should maintain safety data sheets, implement appropriate risk management measures, and follow workplace exposure guidelines.
Where to buy but-1-yne in Europe?
But-1-yne is available through OYSI, a trusted European distributor of technical chemicals serving industrial customers across Europe. OYSI provides quality chemical products with proper documentation and regulatory compliance support. Contact OYSI directly for availability, specifications, and delivery options to meet your specific industrial requirements for but-1-yne and other specialty chemicals.
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Data Sources
Classification per CLP Regulation (EC) No 1272/2008. Data from ECHA and PubChem.