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nature : C10H8 most simple aromatic ring compounds. In 1820 the first time from coal tar distillation. Bright Crystal Flake. Special smell. Density 1.162. 80.2 ° C melting point. Boiling Point 217.9 ° C Refractive index 1.58212 (100 ° C). Volatile and easy sublimation. Do not dissolve in water, soluble in alcohol and ether, etc.. Can lit, light cigarettes over the weak. Can decay. Replace reaction than Reaction easy. In appropriate circumstances, the hydrogen molecules are chlorine, bromine, nitro, Sulfosalicylic replaced, with the effect of chlorine and hydrogen addition reactions. Preparation of the extensive use of dyes, resins, solvents and other raw materials, is also used as insect repellent (commonly known as the trigger or an ingredient in mothballs). Coal tar can be part of the oil and set aside part of carbolic acid (Naphthalene). Also available from 10 carbon pyrolysis tar distillates or diesel distillate separation (naphthalene oil, petro-naphthalene). There is also from Methylnaphthalene by demethylation obtained.
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