Overview
2-Pentyn-1-ol (C5H8O) is an organic compound belonging to the class of terminal alkynols. It features both a hydroxyl group and a carbon-carbon triple bond in its structure, making it a versatile building block in chemical synthesis. The compound is primarily utilized in research laboratories and specialty chemical production. As a liquid at room temperature with moderate volatility, 2-pentyn-1-ol requires careful handling due to its flammability and reactivity. Its unique molecular structure allows for diverse chemical transformations, particularly in the synthesis of more complex organic molecules.
Physical and Chemical Properties
2-Pentyn-1-ol presents as a colorless to slightly yellow liquid with a characteristic acetylenic odor. The compound has a density slightly lower than water (∼0.89 g/cm³) and boils at approximately 140-142°C. Its terminal alkyne functionality makes it reactive toward various chemical transformations, including Sonogashira couplings and nucleophilic additions. The hydroxyl group contributes to moderate hydrogen bonding capability, affecting its solubility profile. While miscible with many organic solvents, its water solubility is limited. The compound's flammability requires special attention during storage and handling, with flash point data suggesting significant fire risk at elevated temperatures.
Main Applications
In pharmaceutical synthesis, 2-pentyn-1-ol serves as a precursor for various heterocyclic compounds and bioactive molecules. Its triple bond allows for efficient incorporation into more complex structures through coupling reactions. The agrochemical industry utilizes this compound in the production of certain pesticides and plant growth regulators. Material science applications include its use as a monomer or crosslinking agent in specialty polymer synthesis. Research laboratories value 2-pentyn-1-ol for its utility in developing novel synthetic methodologies and as a model compound in mechanistic studies of alkyne chemistry.
Safety and Storage
Proper storage of 2-pentyn-1-ol requires chemical-resistant containers (preferably glass or certain plastics) in cool, well-ventilated areas separate from oxidizers. The compound should be kept away from ignition sources and static electricity, with grounding precautions during transfer operations. Personnel handling this chemical should wear appropriate PPE including nitrile gloves, safety goggles, and flame-resistant lab coats. Spill containment measures should include non-combustible absorbents, and fire extinguishing requires alcohol-resistant foam or dry chemical agents. Proper waste disposal must follow local regulations for flammable organic compounds.
B2B Procurement Guide
When sourcing 2-pentyn-1-ol, buyers should specify required purity levels (typically ranging from 95% to 99%), packaging sizes (from 100g to 25kg drums), and any special handling requirements. Technical grade is suitable for many industrial applications, while research-grade material may be necessary for pharmaceutical uses. Lead times can vary significantly depending on supplier inventory, with specialty chemical distributors often maintaining smaller quantities. Bulk purchases may require custom synthesis arrangements. Quality documentation should include certificates of analysis, safety data sheets, and preferably third-party verification of purity for critical applications.
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