_Linseed Oil._--Russia, India, and Argentine Republic are the principal countries which extensively grow the flax plant, from the seeds of which linseed oil is pressed. It is used to a limited extent in soft-soap making. A good sample gave on analysis:-- ____________________________________________________________________ | | | | | | | Specific | Saponification | Acidity | Titre, | Refractive | |Gravity at | Equivalent. | (as Oleic Acid) | deg.C. | Index at | | 15 deg. C.| | Per Cent. | | 15 deg. C. | |___________|________________|_________________|________|____________| | | | | | | | 0.935 | 292 | 1.2 | 20 | 1.4840 | |___________|________________|_________________|________|____________| Linseed oil should absorb 170 to 180 per cent. iodine. _Hemp-seed oil_ is produced from the seeds of the hemp plant which grows in Russia. This oil is used in soft soap-making, more particularly on the Continent. A typical sample gave the following figures:-- __________________________________________________ | | | | | | Specific | Saponification | Titre, | | | Gravity at| Equivalent. | deg.C.| Iodine No. | | 15 deg. C.| | | | |___________|________________|________|____________| | | | | | | 0.926 | 292.6 | 15.8 | 143 | |___________|________________|________|____________| _Sunflower oil_ is produced largely in Russia. A specimen tested:-- ____________________________________________________________________ | | | | | | | Specific | Saponification | Acidity | Titre, | | | Gravity at| Equivalent. | (as Oleic Acid) | deg.C. | Iodine No. | |15 deg. C. | | Per Cent. | | | |___________|________________|_________________|________|____________| | | | | | | | 0.9259 | 290.7 | 0.81 | 17 | 126.2 | |___________|________________|_________________|________|____________| _Castor Oil._--The castor oil plant is really a native of India, but it is also cultivated in the United States (Illinois) and Egypt. A typical commercial sample tested:--