NAPHTHA

(Lat.), n. f. Na2f(na3f)'tha3. Gr., vd^Oa. Ger., N. 1. Petroleum. [B.] 2. Any ethereal substance, especially ethyl ether. [B, 49.] Coal (-tar> n. Light oil of tar, derived from the distillation of coal-tar; a complex substance containing benzene and other hydrocarbons. [B, 5 (a, 24).] Crude n. That part of the oil which, in the manufacture of benzene, comes over at a temperature not higher than 210 C. or, according to some, not higher than 170 C., the oil coming over between 170 and 230 being then called middle oil. [B, 3 (a, 38).] E ign' (Ger.), N. aceti. See AETHER ACETIC US. N. ferrata, N. mart i at a. See Tinctura FERRI chlorati cet here a. fi. nitri. See ETHYL nitrite. N. petrae. N. petrolei. Bitumen, petroleum. [B, 180 (a, 35).] N. vitriol i. Ordinary ether; so called because prepared by the action of sulphuric acid (oil of vitriol) on alcohol. [B.] N. vegetables. See ^ETHER ACETIC US. N. vitriol i aquosus. See LIQUOR anodynus minerahs aquosus. IS. vitriol i camphor at a. See Solutio CAMPHOR* cet here a. N. vitriol i diluta. See LIQUOR anodynus mineralise aquosus. K. vitriol i martial is. See Tinctura FERRI chlorati cet here a. Oleum naphthae. See OLEUM cethereum Salpetern' (Ger.). See ETHYL nitrate. Schwefeln* (Ger) See ETHYL ETHER. Shale n. See LIGROIN. Wood n. A commercial name for impure methyl alcohol. [B, 9 (a, 38).] NAPHTHALENE, n Na'f'tha2l-en. Lat,,' naphtha linum. Fr. naphtahne Ger., Naphtha len, Naphtalin, Naphti/licasnerry substance, C, H8 = C6 [H,H,H,H,CH: CH.-,jL-? CH: H,--1- discovered in coal-tar by Garden in 1820, and also obtained from oil of turpentine. It forms shining colorle leaflets of a penetrating coal-tar odor (masked by oil of bergamot) and a burning, aromatic taste; slightly soluble in boiling water, easily soluble in ether, chloroform, or hot alcohol, volatilizing at ordinary temperatures melting at 79'2 C., and boiling at 218 C. It is antiseptic and anthelinmthic, and is used in diarrhoea and catarrhal enteritis and as an application in frost-bites and various skin diseases to expel moths, etc. [E, 4. 270 (a, 38); " Proc. of the Am. Pharm A oc., xxv, xxx i, xxxii, xxxiii, xxxv, xxxvi, xxxviii (a, 46) ] [s. 68]