γ-Linolenic Acid

Polysorbate 80 USP/NF is a hydrophilic nonionic surfactant used as an emulsifier or surfactant in foods, medicines, skincare products, vaccines etc. It also acts as a surfactant in soaps and cosmetics.USP NF is a combination of two compendia, the United States Pharmacopeia (USP) and the National Formulary (NF). Sales Specifications Appearance: Oily, colorless or brownish yellow, clear or slightly opalescent liquid Solubility: Dispersible in water, in anhydrous ethanol, in ethyl acetate and in methanol, practically insoluble in fatty oils and in liquid paraffin Relative Density (g/ml): About 1.10 Viscosity @ 25oC: ~ 400 Identification A) By infrared absorption: The absorption maxima in the spectrum obtained with the sample shall correspond to the reference spectrum of polysorbate 80/reference standard B) Test for hydroxyl value: Should comply with the test for hydroxyl value C) Test for saponification value: Should comply with the test for saponification value D) Test for composition of fatty acids: Should comply with the test for composition of fatty acids E) Chemical test: The solution should become blue Acid Value (mgKOH/g):2.0 Max Hydroxyl Value (mgKOH/g):Between 65 and 80 Peroxide Value:10 Max Saponification Value (mgKOH/g):Between 45 and 55 Composition of fatty acids by GC a) Myristic Acid:5.00 % Max b) Palmitic Acid:16.00 % Max c) Palmitoleic Acid:8.00 % Max d) Stearic Acid:6.00 % Max e) Oleic Acid:Not less than 58.00 % f) Linoleic Acid:18.00 % Max g) Linolenic Acid:4.00 % Max Ethylene Oxide & Dioxane a) Ethylene Oxide:1 ppm Max b) Dioxane: 10 ppm Max Water: 3.00 % Max Total ash: Not more than 0.25 % Packing 485 lb drum, 4 drums per pallet