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nature : HC �CCH2OH also known as 2-propargyl-1-ol, acetylene-based methanol. A colorless, volatile liquid medium. There are old-zygomatic grass smells. The relative density of 0.9485 (20 / 5 ° C). Temperature -48 -- 52 ° C 114-115 ° C boiling point. Refractive index of 1.4320. Viscosity (20 ° C) 1.68 cents Pago seconds. A flash point of 36 ° C. Heat capacity coke 2.577 / (grams opened). With water, benzene, chloroform, 1,2-dichloroethane, ethanol, ethyl ether, acetone, Dioxane, tetrahydrofuran, pyridine immiscibility, some dissolved carbon tetrachloride, and aliphatic hydrocarbons immiscible, when mixed with pyridine exothermic. Water (60.5%) formed azeotropic mixture, a total of 97.5 ° C boiling point. Heating or alkaline can cause polymerization. Acid-resistant solution polymerization. Long home, especially when the case-yellowing. Toxic. To stimulate the skin and mucosa. Organic synthesis of intermediates, can be used to produce acrylic acid, acrolein, vitamin A, 2-amino - ethyl Peten question also be used as cleaning agents, can be curbed acid, phosphoric acid, sulfuric acid, hydrochloric acid, etc. of iron, copper, nickel and other metal corrosion, and is widely used in oil exploration. Also can be used as solvents, such as chlorinated hydrocarbons stabilizer, herbicides, fungicides, etc.. The main acetylene and formaldehyde by the high-pressure catalytic system in addition, also got butynediol.
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