The Identification of Organic Compounds (Paperback)

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1911 Excerpt: ...bromide, C3H7Br, B.P. 71. Isopropyl bromide, CH3-CHBr.CH3, B.P. 59-60. Methyl iodide, B.P. 43. Ethyl iodide, B.P. 72. Propyl iodide, B.P. 102. Isopropyl iodide, B.P. 89-5. Allyl chloride, CH2: CH-CH2Cl, B.P. 46, has a leek-like odour. Allyl bromide, B.P. 70-71. Allyl iodide, B.P. 102-103. Methylene iodide, CH2I2, boils at 180 with partial decomposition. Ethylene chloride, CH2Cl-CH2Cl, B.P. 84. Ethylene bromide, B.P. 131-132. Ethylene iodide, melts at 81-82. Chloroform, CHCl3, B.P. 61-5, is a colourless non-inflammable liquid. When boiled with alcoholic caustic potash, potassium formate and potassium chloride are formed--CHCl3 ] 4KOH = H-COOK + 3KCl + 2HiO. The carbylamine test may also be applied (see page 11). Bromoform, CHBr3, B.P. 151. Iodoform, CHI3, M.P. 119-120, crystallizes in brilliant yellow leaflets of a characteristic odour. Carbon tetrachloride, CC14, B.P. 76-77, is a pleasant smelling liquid. When treated with zinc and hydrochloric acid, it is reduced to chloroform. On heating with alcoholic potash it is decomposed into potassium carbonate and potassium chloride. CC14 + 6KOH = K2CO3 + 4KC1 + 3H2O. AROMATIC HALOGEN COMPOUNDS are divided into two classes: --1. True aromatic halogen compounds, i.e. those with the halogen attached to the benzene nucleus. 2. Those with the halogen in the side chain. The members of the first class are colourless liquids or solids, with a faint, agreeable odour. They are insoluble in water, but readily soluble in the other common solvents. They easily form nitro-derivatives. Caustic alkali does not readily remove the halogen from these compounds. Monoehlorobenzene, C6H6Cl, B.P. 132. o-Dichlorobenzene, C6H4C12, B.P. 179. m-Dichlorobenzene, B.P. 172. p-Dichlorobenzene, M.P. 53. Monobromobenzene, C6H6Br, B.P. 156-157. o-D..