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|Section2= |Section3= |Section4= }} Hexaethyl tetraphosphate is a chemical compound with the chemical formula (C2H5O)6P4O7. It is a yellow, light amber-colored or brown liquid.〔〔 The chemical is also known as HET. Its ChemSpider ID is 12420.〔 It is a constituent of the insecticide Bladan.〔 In the 1940s, it was about as significant an insecticide as DDT and was referred to as "another of DDT's rivals for fame" in a 1948 book. ==Properties== Hexaethyl tetraphosphate does not readily burn. It is miscible and soluble in water.〔 It is also soluble in a large number of organic compounds. These include acetone, ether, alcohol, carbon tetrachloride, chloroform, ethyl acetate, glycerol, benzene, diacetone alcohol, alkylated naphthalenes, xylene, and toluene. However, the chemical does not dissolve in kerosene, ligroin, or other paraffin fractions.〔 When reacting with hydrides and other strong reducing agents, the chemical reacts to form phosphine, a toxic gas.〔 When hexaethyl tetraphosphate is exposed to moisture, it quickly hydrolyzes. This reaction forms nontoxic products.〔 Hexaethyl tetraphosphate has a pH of 5.5. Its index of refraction is 1.443. The chemical boils at at a pressure of 760 millimeters of mercury and its flash point is .〔 Its melting point is . It has a density of 1.331 grams per cubic centimeter. Its enthalpy of vaporization is 70.102 kilojoules per mole. Hexaethyl tetraphosphate has two Rule of 5 violations. Hexaethyl tetraphosphate in a pure state does not noticeably corrode metals such as brass and iron. However, when a small amount of water is added to the chemical, it forms a strong acid and quickly corrodes galvanized iron and more slowly corrodes pure iron. Hexaethyl tetraphosphate diluted with 0.1% water has a pH of 2.5.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Hexaethyl tetraphosphate」の詳細全文を読む スポンサード リンク
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