Cohune-nut oil is produced from the nuts of the cohune palm, which flourishes in British Honduras. This oil closely resembles cocoa-nut and palm-nut oils and is stated to saponify readily and yield a soap free from odour. The following figures, obtained in the Laboratory of the Imperial Institute, are recorded in the official Bulletin, 1903, p. 25:—
| Saponification Equivalent. | Iodine No. | Melting Point of Fatty Acids, °C. |
| 253.9-255.3 | 12.9-13.6 | 27-30 |
Mafoureira or Mafura tallow from the nuts of the mafoureira tree, which grows wild in Portuguese East Africa. The following figures are published:—
| Saponification Equivalent. | Iodine No. | References. | |
| Titre, °C. | |||
| 253.8 | 44-48 | 46.14 | De Negri and Fabris, Annal. del Lab. Chim. Delle Gabelle, 1891-2, p. 271. |
| Acidity (as Oleic Acid) Per Cent. | |||
| 232.8-233.7 | 21.26 | 47.8-55.8 | Bulletin Imp. Inst., 1903, p. 27. |
Pongam oil, obtained from the beans of the pongam tree, which flourishes in East India, has been suggested as available for the soap industry, but the unsaponifiable matter present would militate against its use. Lewkowitsch (Analyst, 1903, pp. 342-44) quotes these results:—
| Saponification Equivalent.[7] | Iodine No. | Acidity, Per Cent. | Unsaponifiable, Per Cent. | |
| Oil extracted in laboratory | 315 | 94 | 3.05 | 9.22 |
| Indian specimen | 306 | 89.4 | 0.5 | 6.96 |
Margosa oil is obtained from the seeds of Melia azedarach, a tree which is found in most parts of India and Burma.
Lewkowitsch (Analyst, 1903, pp. 342-344) gives these figures:—
| Saponification Equivalent.[8] | Iodine No. | Titre, °C. |
| 284.9 | 69.6 | 42 |