Chemical properties of butynediol: white orthorhombic crystal. Melting point 58 ℃, boiling point 238 ℃, 145 ℃ (2KPa), flash point 152 ℃, refractive index 1.450. Soluble in water, acid solution, ethanol and acetone, slightly soluble in chloroform, insoluble in benzene and ether.
Usage: butynediol can be used to produce butene glycol, butynediol, n-butanol, dihydrofuran, tetrahydrofuran γ- A series of important organic products such as butyrolactone and pyrrolidone can be further used to manufacture synthetic plastics, synthetic fibers (nylon-4), artificial leather, medicine, pesticides, solvents (N-methyl pyrrolidone) and preservatives. Butynediol itself is a good solvent and is used as a brightener in electroplating industry.