The basic chemical composition of Tween series products is a polyoxyethylene sorbitan fatty acid ester. Soluble in water, ethanol, propanol, and other solvents, can be dispersed in mineral oil. HLB 14.9-16.9, varies with the combined fatty acids. It is a hydrophilic, oil-in-water (O/W) nonionic surfactant with good thermal and hydrolytic stability. Tween series products are widely used in food, cosmetics, medicine, textile, and chemical industries as emulsifiers, stabilizers, and solubilizers.
Polysorbate 80, Sorbitan monooleate, ethoxylated
|Test items||Index value|
|Acid value (as KOH )/( mg/g ) ≤||2|
|Saponification value (in KOH )/( mg/g )||45 — 55|
|Hydroxyl value (as KOH )/( mg/g )||65 — 80|
|moisture, w/ % ≤||3|
|burning residue, w/ % ≤||0.25|
|Arsenic ( As ) /(mg/kg) ≤||3|
|Lead (pb) /(mg/kg) ≤||2|
|Oxyethylene group (as C 2 H 4 O), w/%||65.0—69.5|
|Appearance||Light yellow, oily substance at room temperature|
25Kgs net food plastic drum or 200 Kg aluminum drum.
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