A typical sample tested:—
| Saponification Equivalent. | Acidity (as Oleic Acid) Per Cent. | Titre, °C. |
| 285.1 | 0.05 | 38 |
Arachis Oil.—The earth-nut or ground-nut, from which arachis oil is obtained, is extensively cultivated in North America, India and Western Africa. Large quantities are exported to Marseilles where the oil is expressed. Arachis oil enters largely into the composition of Marseilles White Soaps.
Representative samples of commercial and refined oils tested:—
| Specific Gravity at 15° C. | Saponification Equivalent | Acidity (as Oleic Acid) Per Cent. | Titre, °C. | Refractive Index at 20° C. | |
| Commercial | 0.9184 | 298 | 2.6 | 28.6 | ... |
| Refined | 0.9205 | 285 | 0.22 | 24.0 | 1.4712 |
Arachis oil should absorb 90 to 98 per cent. iodine.
Maize Oil.—America (U.S.) produces very large quantities of maize oil.
Typical samples of crude and refined oil gave these figures:—
| Specific Gravity at 15° C. | Saponification Equivalent | Acidity (as Oleic Acid) Per Cent. | Titre, °C. | Refractive Index at 20° C. | |
| Crude | 0.9246 | 294 | 1.41 | 15 | ... |
| Refined | 0.9248 | 294.1 | 0.40 | 17.2 | 1.4766 |
Maize oil should absorb 120 to 128 per cent. iodine.