Safflower oil is pressed from the seeds of the safflower plant (Carthamus tinctorius), which is cultivated in India. The plant also yields a fugitive dyestuff. The oil is rather slow-drying, and when it is polymerized by heating, it gels. It has been used in India, under the name Roghan, for decorative painting. The plant is now cultivated in the United States, where the oil is used as a polyunsaturated cooking oil and, in combination with synthetic resins, as a binder for industrial paints. Safflower oil, like poppyseed oil, contains linoleic acid but very little or no linolenic acid, the ingredient that is thought to cause both the yellowing and the strong film-making quality of linseed oil. Safflower oil is lighter in color than linseed oil, and so white paints ground with it appear whiter than do those with linseed oil. Many manufacturers use safflower oil in their white oil paints instead of grinding them in linseed oil or poppyseed oil, claiming that the safflower oil whites change color less than do those made with linseed oil.
Safflower Oil is the refined fixed oil obtained from the seed of Carthamus tinctorius Linn‚ (Fam. Compositae).
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Specifications
Iodine Value Range According to United States Pharmacopeia (USP) Test Method |
N/A 135 to 150 |
Free Fatty Acids Value for 0.02 Normal Sodium Hydroxide (NaOH) According to United States Pharmacopeia (USP) Test Method |
N/A <2.5 mL |
Saponification Value Range According to United States Pharmacopeia (USP) Test Method |
N/A 186 to 194 |
Typical Peroxide Value According to United States Pharmacopeia (USP) Test Method |
N/A <2.0 mEq/kg |
Maximum Peroxide Value According to United States Pharmacopeia (USP) Test Method |
N/A 10 |
Fatty Acid Composition Value Range of Palmitate for C16:0 Lipid Number According to United States Pharmacopeia (USP) Test Method |
N/A 2 to 10 % |
Fatty Acid Composition Value Range of Stearate for C18:0 Lipid Number According to United States Pharmacopeia (USP) Test Method |
N/A 1 to 10 % |
Fatty Acid Composition Value Range of Oleate for C18:1 Lipid Number According to United States Pharmacopeia (USP) Test Method |
N/A 7 to 42 % |
Fatty Acid Composition Value Range of Linoleate for C18:2 Lipid Number According to United States Pharmacopeia (USP) Test Method |
N/A 72 to 84 % |
Maximum Color Gardner According to American Oil Chemists Society (AOCS) Td la-64 Test Method |
N/A 3 |
Appearance |
N/A Bright and clear Pale yellow |
Odor |
N/A Bland Odorless |
Specific Gravity Range at 25ºC According to United States Pharmacopeia (USP) Test Method |
N/A 0.919 to 0.924 |
Footnote |
N/A Because of natural variations in oilseed crops, chemical and physical constants cannot be guaranteed at all times. However, oil sold as USP is guaranteed to meet the USP monograph. |