Various New Fats and Oils Suggested for Soap-making.
Carapa or Andiroba oil, derived from the seeds of a tree (Carapa Guianensis) grown in West Indies and tropical America, has been suggested as suitable for soap-making. Deering (Imperial Institute Journ., 1898, 313) gives the following figures:—
| Saponification Equivalent. | Acidity Per Cent. | Melting Point of Fatty Acids, °C. |
| 287 | 12 | 89 |
Another observer (Rev. Chem. Ind., 13, 116) gives the setting point of the fatty acids as 56.4° C.
Candle-nut oil obtained from the seeds of a tree flourishing in India and also the South Sea Islands.
The following figures have been published:—
| Saponification Equivalent.[1] | Titre, °C. | Iodine No. | Observers. | References. |
| 299-304.9 | 13 | 136.3-139.3 | De Negri | Chem. Centr., 1898, p. 493. |
| 291 | ... | 163.7 | Lewkowitsch | Chem. Revue, 1901, p. 156. |
| 296 | 12.5 | 152.8 | Kassler | Farben-Zeitung, 1903, p. 359. |
Curcas oil is produced in Portugal from the seeds of the "purging nut tree," which is similar to the castor oil plant, and is cultivated in Cape Verde Islands and other Portuguese Colonies.
The following data have been observed:—