=============+=========+========+==============+============ | Sp. Gr. | Iodine |Saponification| Free Fatty | | Value | Number | Acid -------------+---------+--------+--------------+------------ Light Refined| .924 | 148 | 190.2 | 1.2 Dark Yellow | .920 | 142 | 187 | 7.0 Dark Brown | .910 | 140 | 184 | 18.0 =============+=========+========+==============+============ =Sunflower Oil.= Sunflower oil is produced largely in Russia and Hungary, finding favor in those countries as an edible oil. The ripe seeds of the sunflower plant contain over 30% of oil which is very pale in color and of a pleasant smell. It has been found that sunflowers may be grown to advantage in dry parts of the United States, and if suitable yields are obtained from a few experimental acres now being cultivated, the industry may receive encouragement in this country. The oil should be well suited for varnish making, and although the iodine number is not very high, it dries quite rapidly. [Illustration: Russian Sunflower Seeds] CONSTANTS OF SUNFLOWER OIL ========+============+================+====== Sp. Gr. | Iodine No. | Saponification | Acid | | No. | No. --------+------------+----------------+------ .929 | 128 | 188 | 4 ========+============+================+====== =Cottonseed Oil.= This oil is expressed from the seed of the cotton plant, varying in color according to the time of its pressing and degree of refinement. Being edible as well as highly suited for soap making, very little of it comes into the market as a paint oil. It contains large quantities of stearin and has a low iodine value, making it a slow drying oil. Some samples are extremely light in color and contain less mucilaginous matter and foots than is present in ordinary varieties. CONSTANTS OF COTTONSEED OIL ========+============+================+====== Sp. Gr. | Iodine No. | Saponification | Acid | | No. | No. --------+------------+----------------+------ .922 | 106 | 190 | 2.4 ========+============+================+====== =Corn Oil.= As a by-product in the manufacture of starch and alcoholic liquids, this material comes into the market having a golden yellow color, and an odor resembling fermented grain. It has a lower drying value than cottonseed oil, and its use in the paint industry will probably be limited to color grinding, where an oil with a semi-drying value is often desired. Like cottonseed oil, it belongs more properly to the soap oil class. It contains glycerides of linoleic and especially palmitic acid. ANALYSIS OF CORN OIL