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Polysorbate 85
Product Details
Category
Surfactant; Emulsifier; Solubilizer; Humectants
Molecular Formula
C100H188O28
Molecular Weight
1838.5
Grade
Pharmceutical Excipients
Description
The product is an amber oily viscous liquid.
UNII
NA
Chemical Name
Polyoxyethylene 20 sorbitan monolaurate
CAS Number
9005-70-3
Synonyms
Tween 85; sorbitan tri-9-octadecenoate poly(oxy1, 2-ethanediyl) derivatives
Administration route
Topical administration.
Dosage Form
Intramuscular injection, intravenous injection, oral, topical, rectal, vaginal preparations
Stability and Storage Conditions
Polysorbate is stable to electrolytes, weak acids and weak bases; it will gradually saponify in case of strong acids and strong bases. Its oleate is susceptible to oxidation. Polysorbate is hygroscopic, check its moisture content before use, and dry if necessary. Polysorbate, like other polyoxyethylene surfactants, will produce peroxides when stored for too long. Polysorbate should be stored in a sealed container, away from light, in a cool and dry place.
Commonly used amount and the maximum amount
The World Health Organization has evaluated the acceptable daily intake of polysorbate 20, 40, 60, 65, and 80. Calculated on the basis of total polysorbate, the daily intake can be as high as 25mg per kilogram of body weight. The marketed topical emulsion, the maximum dosage in the cream is 6.00%.
Source and Preparation
This product is polyoxyethylene 20 laurel sorbitan polymerized from laurel sorbitan and ethylene oxide. Polysorbate is prepared from pear (sugar) alcohol through a three-step reaction. First, sorbitol is dehydrated to form sorbitan (cyclic sorbitan); sorbitan is esterified with fatty acids, such as oleic acid or stearic acid, to form hexose esters; finally, it reacts with ethylene oxide under the action of a catalyst Generate polysorbate.
Applications
Polysorbates containing 20 oxyethylene units are hydrophilic nonionic surfactants widely used as emulsifiers for stable oil-in-water pharmaceutical emulsions. Polysorbates are also used as solubilizers for various substances, including essential oils and oil-soluble vitamins, and as wetting agents for oral or parenteral suspensions. Polysorbates have been found to help increase the oral bioavailability of drug molecules that are substrates of p-glycoprotein.
Safety
Polysorbates are widely used in cosmetics, foods, and preparations for oral, parenteral, and topical administration, and are generally considered to be non-toxic and non-irritating materials. There have been occasional reports of hypersensitivity to polysorbates when used topically and intramuscularly. Polysorbates have also been associated with some serious adverse effects, including death, reported in low-birth-weight newborns when vitamin E preparations containing a mixture of polysorbate 20 and polysorbate 80 were administered intravenously. When heated to decomposition, polysorbate emits acrid and pungent fumes. Polysorbate 85, skin irritant.
Incompatibilities
Polysorbate reacts discoloration and/or precipitation with various substances, especially phenol, tannin, tar and tar-like substances. In the presence of polysorbates, the antimicrobial activity of the preservative parabens was reduced.
Online Inquiry
Please note: Our products and services are not intended to be used directly in diagnostic or therapeutic procedures.
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