A white crystalline aromatic compound, C10 H8 , derived from coal tar or petroleum and used in manufacturing dyes, moth repellents, and explosives and as a solvent.
A white, crystalline, aromatic hydrocarbon, C10H8, produced in the fractional distillation of coal tar: it is used in moth repellents and in the manufacture of certain dyes and other organic compounds.
A white crystalline compound made from coal tar or petroleum and used to make dyes, mothballs, explosives, and solvents. Naphthalene consists of two benzene rings fused together. Chemical formula:C10H8.
Bamberger, on the other hand, extends his views on benzene and naphthalene and assumes the molecule to be (1).
Instances of its application are found in the separation of orthoand para-nitrophenol, the o-compound distilling and the p- remaining behind; in the separation of aniline from the mixture obtained by reducing nitrobenzene; of the naphthols from the melts produced by fusing the naphthalene monosulphonic acids with potash; and of quinoline from the reaction between aniline, nitrobenzene, glycerin, and sulphuric acid (the product being first steam distilled to remove any aniline, nitrobenzene, or glycerin, then treated with alkali, and again steam distilled when quinoline comes over).
Certain crude oils have also been found to contain camphenes, naphthalene and other aromatic hydrocarbons.
Decompositions of this nature were first discovered in the naphthalene series, where it was found that derivatives of indene (and of hydrindene and indone) and also of benzene resulted; Zincke then extended his methods to the disintegration of the oxybenzenes and obtained analogous results, R-pentene and aliphatic derivatives being formed (Rsymbolizing a ringed nucleus).
Restricting ourselves to compounds resulting from the fusion of benzene rings, we have first to consider naphthalene, C10H8, which consists of two benzene rings having a pair of carbon atoms in common.