Ethoxylated sorbitane monooleate

The action of multiple emulsions stabilised by ethoxylated sorbitane monooleate and triglyceride after oral administration of insulin has been studied in [130]. The example of test animals has clearly shown that encapsulated insulin obtains prolonged protection from the proteolytic action of the digestive enzymes. 

Tribological test results for aqueous solutions of ethoxylated sorbitan esters have been presented in a publication [48], It has been demonstrated that addition to water of such esters as ethoxylated sorbitan monolaurate, ethoxylated sorbitan monostearate, or ethoxylated sorbitan monooleate results in a significant reduction in the coefficient of friction and wear and prevents seizure of mating friction-couple elements. It has been found that the concentration of the additive in water, and not the compound s structure, has the decisive effect on the improvanent in tribological characteristics [48],... 

Chem. Descrip. Ethoxylated sorbitan monooleate 20 EO Chem. Analysis 3.0% max. moisture CAS 9005-65-6... 

A series of sorbitol-based nonionic surfactants are used ia foods as water-ia-oil emulsifiers and defoamers. They are produced by reaction of fatty acids with sorbitol. During reaction, cycHc dehydration as well as esterification (primary hydroxyl group) occurs so that the hydrophilic portion is not only sorbitol but also its mono- and dianhydride. The product known as sorbitan monostearate [1338-41 -6] for example, is a mixture of partial stearic and palmitic acid esters (sorbitan monopalmitate [26266-57-9]) of sorbitol, 1,5-anhydro-D-glucitol [154-58-8] 1,4-sorbitan [27299-12-3] and isosorbide [652-67-5]. Sorbitan esters, such as the foregoing and also sorbitan monolaurate [1338-39-2] and sorbitan monooleate [1338-43-8], can be further modified by reaction with ethylene oxide to produce ethoxylated sorbitan esters, also nonionic detergents FDA approved for food use. 

Figure 17-9. Surfactants in a slurry concentrate sorbitan monooleate, ethoxylated nonylphenol.

The overall objective of this research was to evaluate the effects of cosolvent addition on the ability of an ethoxylated nonionic surfactant to recover PCE from a heterogeneous, 2-D system. The specific tasks of this work were to (a) quantify the PCE solubilization rate and capacity in the presence and absence of a representative cosolvent (EtOH) and (b) investigate the effects of EtOH addition on surfactant delivery, plume migration and PCE recovery in a 2-D, layered sand tank. A representative nonionic surfactant, polyoxyethylated (POE) (20) sorbitan monooleate (Tween 80), was selected for study because of its capacity to solubilize PCE ( 0.7 g PCE/g surf at 20°C) and relatively high interfacial tension with PCE (5 dynes/cm). EtOH was chosen as the representative cosolvent because of its relatively low density (p = 0.79 g/cm1) and regulatory acceptance. 

Synonyms PEG 300 sorbitan monooleate POE (6) sorbitan oleate DeTnition Ethoxylated sorbitan ester of oleic acid with avg. 6 moles EO Empirical C3eH ,0 ... 

The application of sorbitan esters and/or ethoxylated sorbitan esters as lubricant components has been discussed in the literature. It has been shown, among others, that sorbitan monoesters, monolaurate and monooleate, efficiently improve the lubricating properties of paraffin oil. When sorbitan trioleinate was used as an additive, no improvement in the lubricating properties of paraffin oil was observed [111],... 

The monomer conversion and reduced viscosity were monitored by continuously inverting and diluting the emulsion phase using a small reactor sample stream and a breaker surfactant solution, followed by UV absorption and viscometric detection. Sorbitan monooleate (Span 80) was used as the emulsifier, Exxsol D80 was the oil phase (aliphatic hydrocarbon), and Surfonic N-95 (alkylphenol ethoxylate), a nonionic surfactant, was chosen to make the phase inversion. 

Representative antifogging additives are glycerol monooleate, poly-(glycerol ester)s, sorbitan esters, ethoxylated sorbitan esters, nonyl-phenol ethoxylate or ethoxylated alcohols (5). 

Chem. Descrip. Sorbitan monooleate, ethoxylated (> 97%), oxirane (0.001%) and water... 

Aerobic biodegradation of polysorbate 80, a 20-mole ethoxylate of sorbitan monooleate, results in immediate hydrolysis and degradation of the oleic acid function. Terminal hydroxyl groups on the polyethoxy chains are oxidized to the carboxylic acids. Further biodegradation is slow compared to AE (96). 

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