Dika fat or Wild Mango oil is obtained from the seed kernels of various kinds of Irvingia by boiling with water. Lemarié (Bulletin Imp. Inst., 1903, p. 206) states that this fat is used in the place of cocoa-nut oil in the manufacture of soap. Lewkowitsch (Analyst, 1905, p. 395) examined a large sample of dika fat obtained from seeds of Irvingia bateri (South Nigeria) and gives the following data:—
| Saponification Equivalent.[9] | Iodine No. | Titre, °C. | Unsaponifiable, Per Cent. |
| 229.4 | 5.2 | 34.8 | 0.73 |
Baobab-seed Oil.—Balland (Journ. Pharm. Chem., 1904, p. 529, abstracted in Journ. Soc. Chem. Ind., 1905, p. 34) states that the natives of Madagascar extract, by means of boiling water, from the seeds of the baobab tree, a whitish solid oil, free from rancidity, and possessed of an odour similar to Tunisian olive oil. He suggests that it may, with advantage, replace cocoa-nut oil in soap manufacture.
Persimmon-seed Oil.—Lane (J. S. C. Ind., 1905, p. 390) gives constants for this oil which he describes as semi-drying, of brownish yellow colour, and having taste and odour like pea-nut (arachis) oil. The following are taken from Lane's figures:—
| Saponification Equivalent.[10] | Iodine No. | Titre, °C. |
| 298.4 | 115.6 | 20.2 |
Wheat oil, extracted from the wheat germ by means of solvents, has been suggested as applicable for soap-making (H. Snyder, abstr. J. S. C. Ind., 1905, p. 1074). The following figures have been published:—
| Saponification Equivalent.[11] | Acidity, Per Cent. | Iodine No. | Titre, °C. | Observers. | References. |
| 306 | 5.65 | 115.17 | 29.7 | De Negri. | Chem. Zeit., 1898(abstr. J. S. C., 1898, p. 1155). |
| 297 | 20 | 115.64 | ... | Frankforter & Harding | J. Amer. C. Soc., 1899, 758-769 (abstr. in J. S. C. I., 1899, p. 1030). |
Tangkallah fat, from the seeds of a tree growing in Java and the neighbouring islands, is suitable for soap-making. Schroeder (Arch. Pharm., 1905, 635-640, abstracted in J. S. C. Ind., 1906, p. 128) gives these values:—
| Saponification Equivalent.[12] | Acidity, Per Cent. | Iodine No. | Unsaponifiable, Per Cent. |
| 209 | 1.67 | 2.28 | 1.44 |
It is a hard fat, nearly white, possessing neither taste nor characteristic odour and solidifying at about 27° C.