Chemical name: Polysorbate
Product Standard: GB/EP/USP/FCC
Shelf life: 2 years.
Chemical name: Polysorbate
Product Standard: GB/EP/USP/FCC
Shelf life: 2 years.
Polysorbate
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Polysorbate is a group of emulsifiers used in many pharmaceutical, food, and personal care products. They are also referred to by other names like Tween, polyoxyethylene sorbitan fatty acid esters, and the E numbers E432-E436.
Chemically, polysorbates are composed of sorbitan (sugar alcohol) reacted with ethylene oxide and fatty acids like lauric acid or stearic acid. This gives them a structure with both hydrophilic and lipophilic regions.
Polysorbates have a variety of functions including as surfactants, solubilizers, emulsifiers, and dispersing agents. They help disperse oils, flavors, and vitamins in water-based products.
The most common polysorbates include:
Product name | Appearance | Physical and chemical indicators | HLB
value |
||
PH value
(mgKOH/g) |
Saponification value
(mgKOH/g) |
hydroxyl value
(mgKOH/g) |
|||
Polyoxyethylene (20) sorbitan monooleate | Viscous
fluid |
≤ 2.0 | 40~50 | 96~108 | 16.7 |
Polyoxyethylene (40) sorbitan monooleate | ≤ 2.0 | 41~52 | 90~107 | 15.6 | |
Polyoxyethylene (60) sorbitan monooleate | ≤ 2.0 | 45~55 | 81~96 | 14.9 | |
Polyoxyethylene (80) sorbitan monooleate | ≤ 2.0 | 45~55 | 65~80 | 15.0 |
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