Method of preparation of Naphthalene
Naphthalene constitutes the largest part of coal-tar, accounting for approximately 6-10%. The hydrocarbon was initially noticed as a residue in the condensers during the distillation of the naphtha portion, hence its name. It is typically obtained by cooling the middle oil fraction (160-230°), where naphthalene crystallizes. The raw crystals are removed through centrifugation. 1. From … Read more