Emulsifying agents polyoxyethylene stearates

Polyoxyethylene stearates are generally used as emulsifiers in oil-in-water-type creams and lotions. Their hydrophilicity or lipophilicity depends on the number of ethylene oxide units present the larger the number, the greater the hydrophilic properties. Polyoxyl 40 stearate has been used as an emulsifying agent in intravenous infusions. ... 

Polyoxyethylene stearates are particularly useful as emulsifying agents when astringent salts or other strong electrolytes are present. They can also be blended with other surfactants to obtain any hydrophilic-lipophilic balance for lotions or ointment formulations. See Table III. 

Although polyoxyethylene stearates are primarily used as emulsifying agents in topical pharmaceutical formulations, certain materials, particularly polyoxyl 40 stearate, have also been used in intravenous injections and oral preparations. 

Synonyms PEG-3 cetyl ether stearate Definition Stearic acid ester of polyoxyethylene cetyl ether Uses Hydrophobing agent, reforming agent for cosmetics, industrial applies. Features Self-emulsifying hydrophobic component Trade Names Emalex CWS-3 Ceteth-5 stearate... 

---