29. The method of marking an omission or insertion when too long for the side margin.
PROPYLA′MINE. Syn. Tritylamine.
| C3H9N, or C3H7 | } | N. |
| H | ||
| H |
This compound or substituted ammonia, in which one of the three atoms of hydrogen is displaced by the radicle propyl or trityl (C3H7), is isomorphous with trimethylamine, which has been often mistaken for it.
Proposed as a remedy for acute and chronic rheumatism.
Hence it is that the commercial substance known under the name of ‘propylamine,’ which has been proposed and employed as a remedy for rheumatism, has been shown to be not propylamine, but its isomer, trimethylamine, or a mixture of this latter, in varying proportions, with ammonia.
Mendius gives the following process for the preparation of propylamine:—36 grams of cyanide of ethyl, 500 grams of common alcohol, 200 grams of water, and 50 grams of 20 per cent. hydrochloric acid, are allowed to
act on excess of granulated zinc, and then distilled.
The distillate is put back once, and 400 grams of hydrochloric acid are added.
The product is distilled to get rid of the alcohol, then excess of alkali added to the residue, and the distillation continued, whereupon propylamine and water come over. Mendius says 36 grams of the cyanide of ethyl yield 9 grams of pure propylamine. The propylamine is dried by distillation from solid potash.