Grayish Color On My Gums Why Does Naphthalene Retain A Grayish Color Even After Usual Purification Procedure?
Why does naphthalene retain a grayish color even after usual purification procedure? - grayish color on my gums
a sample of naphthalene, pure white where it should be noted that a gray color are used after the cleaning process. The police were correct, and the MP line was low. explain the color gray.
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2 comments:
Wow, I have no idea what you're talking! always smiling and IM: P!
Prepare for the portion of the coal tar, which is in the range from 170 to 230 ° C and the oil temperature is distilled, as phenol. The oil is treated with a solution of sodium hydroxide (to remove phenol), then distilled, the distillate, primarily of naphthalene and solidifies almost completely. Pressed and with an acid and a solution of sodium hydroxide and the final cleaning of naphthalene is washed by steam distillation or sublimation (Pavlov Terentgev ND and Kipping Kipping, 1941) carried out.
Color: White or colorless
http://www.inchem.org/documents/pims/che ...
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