U.S. PHARMACOPEIA

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Cottonseed Oil
» Cottonseed Oil is the refined fixed oil obtained from the seed of cultivated plants of various varieties of Gossypium hirsutum Linné or of other species of Gossypium (Fam. Malvaceae).
Packaging and storage— Preserve in tight, light-resistant containers, and avoid exposure to excessive heat.
Identification— Cottonseed Oil exhibits the following composition profile of fatty acids, as determined in the section Fatty Acid Composition under Fats and Fixed Oils 401:
Carbon-chain
length		 No. of double
bonds		 Percentage (%)
14 0 0.5 to 2.0
16 0 17 to 29
18 0 1.0 to 4.0
20 0 <0.5
22 0 <0.5
24 0 <0.5
18 1 13 to 44
18 2 40 to 63
18 3 0.1 to 2.1
22 1 <0.5
Specific gravity 841: between 0.915 and 0.921.
Free fatty acids 401— The free fatty acids in 10.0 g require for neutralization not more than 2.0 mL of 0.020 N sodium hydroxide.
Iodine value 401: between 109 and 120.
Residual solvents 467: meets the requirements.
(Official January 1, 2007)
Auxiliary Information— Staff Liaison : Hong Wang, Ph.D. , Senior Scientific Associate
Expert Committee : (EM205) Excipient Monographs 2
USP29–NF24 Page 3317
Phone Number : 1-301-816-8351