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Diphenyl ether (diphenyl oxide) is a colorless liquid with a floral odor. It is a white, crystalline solid at temperatures below 80ºF (27ºC). It has low volatility, low solubility in water, and is stable at high temperatures. Avoid contact with oxidizing materials.
Diphenyl ether is also known as benzene ether. Colorless oily liquid or crystal. It has the delicate scent of geranium. Relative density 1.086, melting point 26 ~ 28℃, boiling point 259℃. Insoluble in water, inorganic acid and alkali solutions, soluble in ethanol Chemicalbook, ether, benzene and glacial acetic acid. By sodium phenol or potassium phenol and chlorobenzene or bromobenzene in the presence of catalyst copper powder heating and prepared. Its chemical property is stable, does not change color, leaves the fragrance for a long time, is widely used in soap essence as artificial fixative.
Diphenyl ether is mainly used as one of the components of organic high temperature heat carrier. A mixture of diphenyl ether and biphenyl at A mass ratio of 73.5:26.5 is called conductance A. Temperature range: gas phase 232-399℃, liquid phase 21-399℃, working temperature is not more than 400℃. The mixture composed of diphenyl ether and methyl biphenyl is called conductive LF, low freezing point, can still be used at -30℃, is low temperature, low viscosity Chemicalbook heat carrier. Diphenyl ether has aromas of bay leaf and malus, as well as notes of sweet orange and daffodil, and is known in the fragrance industry as crystalline bay leaf oil or artificial bay leaf oil. Because diphenyl ether is relatively stable to alkalinity, it is used for allocating soap essence more often, and is also commonly used as a substitute for germaine oil. It is suitable for making up scented flowers and cosmetics, deodorant and so on. As an intermediate of organic synthesis, it is used in perfume industry, synthetic resin and other organic synthesis production.
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