Sorbitan monostearate/monooleate

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. 

Sorbitan monolaurate, 4 710 Sorbitan monooleate, 4 710 Sorbitan monopalmitate, 4 710 Sorbitan monostearate, 4 709 Sorbitan sequioleate... 

Sorbitan monolaureate Sorbitan monooleate Sorbitan monopalmitate Sorbitan monostearate Sorbitan tristearate Stannous chloride Stearyl tartrate Succinic acid Sucroglycerides... 

Low-molecular-weight surfactants ( emulsifiers ) are important ingredients in food products. The types of surfactants most commonly studied in food colloids research are phospholipids (lecithin), mono/diglycerides (particularly glycerol monostearate), polysorbates (Tweens), sorbitan monostearate or monooleate (Spans), and sucrose esters. These small lipid-based amphiphiles can typically lower the interfacial tension to a greater extent than the macromolecular amphiphiles such as proteins and certain gums (Bos and van Vliet, 2001). 

Polyoxyethylene 20 sorbitan monolaurate Polyoxyethylene 20 sorbitan monopalmitate Polyoxyethylene 20 sorbitan monostearate Polyoxyethylene 20 sorbitan monooleate Sorbitan monooleate Sorbitan trioleate Sorbitan monostearate Sorbitan monopalmitate Sorbitan monolaurate Polyoxyl 35 castor oil Polyoxyl 40 hydrogenated castor oil Polyoxyethylene polyoxypropylene block copolymer... 

Polysorbates are surfactants that are pegylated derivatives of sorbitan monoesters (i.e., monolaurate, monopalmitate, monostearate, monooleate, or monoisostearate) or sorbitan triesters (i.e., tristearate or trioleate) and are available in many grades. Poly-sorbate 80, also known as Tween 80, is a mixture of polyoxyethylene 20 sorbitan monooleates and is a yellow viscous liquid at room temperature. Sorbitan monooleate, also known as Span 80, is a yellow viscous... 

Grade Polysorbate 20 (polyoxyethylene (20) sorbi-tan monolaurate). Polysorbate 60 (polyoxyethylene (20) sorbitan monostearate). Polysorbate 80 (polyoxyethylene (20) sorbitan monooleate). Polysorbate 65 (polyoxyethylene (20) sorbitan tristearate). 

Properties Sorbitan monolaurate and sorbitan monooleate are amber liquids sorbitan monostearate, sorbitan monopalmitate, and sorbitan tristearate are cream-colored, waxy solids with slight odor and bland taste d of both liquid and solid esters is about 1.0 (25C), mp of solid esters is 54C they are insoluble in water, somewhat soluble in organic solvents. Combustible. 

Chain transfer to emulsifiers containing a reactive carbon-carbon double bond (sorbitan monooleate). The existoice of such an effect was confirmed by cotiq)arative studies on a chemically idouical emulsifier with no unsaturatirm (sorbitan monostearate) [33]. 

The oil phase consisted of 36 g of kerosene with 530 wt% of surfactant. The surfactant was sorbitan monooleate (Span 80 ) and sorbitan monostearate (Span 60 ) with a weight ratio of Span 80 /Span 60 = 3 1. The water phase consisted of TTIP, diethanolamine, methanol and water. DEA was used as a stabilizer to control the hydrolysis rate of TTIP, and methanol was used to increase the compatibility between water and TTIP. The molar ratio of... 

Sorbitan monoiaurate, monooleate, and monostearate. The acceptable daily intake of these i.s up to 25 mg. as total sorbitan esters, per kg body weight. These products may show adverse effects some hypersensitive skin reactions after topical application in creams have been leptHted (11). 

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],... 

Figure 2.1. Relationship between HLB and 8q for three classes of polyoxyethylated surfactants ( ) dodecanol derivatives (O) octylphenol derivatives (A) sorbitan monooleate derivatives ( ) sorbitan monostearate derivatives ( ) sorbitan monolaurate derivatives ( ) polyethylene glycol 3350." (Reproduced with permission of the American Pharmaceutical Association.)...

Sorbitan monooleate (SPAN 80 ) Sorbitan monostearate (SPAN 60 ) 1333-68-2 4.3... 

Chem. Descrip. Sorbitan tritallate Uses Emulsifier, surfactant Sitrasorbox 20/20K/20FG [Seabrook Ind. ] Chem. Descrip. Sorbitan monolaurate Uses Emulsifier, surfactant Sitrasorbox40/40K [Seabrook Ind. ] Chem. Descrip. Sorbitan monopalmitate Uses Emulsifier, surfactant Sitrasorbox 60/60K/60FG [Seabrook Ind. ] Chem. Descrip. Sorbitan monostearate Uses Emulsifier, surfactant Sitrasorbox 65/65K [Seabrook Ind. ] Chem. Descrip. Sorbitan tristearate Uses Emulsifier, surfactant Sitrasorbox 80/80K/80FG [Seabrook Ind. ] Chem. Descrip. Sorbitan monooleate Uses Emulsifier, surfactant Sitrasorbox 801 [Seabrook Ind. ]... 

A multiwavelength approach might have been considered as an alternative to chemical derivatisation. Ruddle and Wilson [62] reported UV characterisation of PE extracts of three antioxidants (Topanol OC, Ionox 330 and Binox M), all with identical UV spectra and 7max = 277 nm, after reaction with nickel peroxide in alkaline ethanolic solutions, to induce marked differentiation in different solvents and allow positive identification. Nonionic surfactants of the type R0(CH2CH20) H were determined by UV spectrophotometry after derivatisation with tetrabromophenolphthalein ethyl ester potassium salt [34]. Magill and Becker [63] have described a rapid and sensitive spectrophotometric method to quantitate the peroxides present in the surfactants sorbitan monooleate and monostearate. The method, which relies on the peroxide conversion of iodide to iodine, works also for Polysorbate 60 and other surfactants and is more accurate than a titrimetric assay. 

The WHO has set an estimated acceptable daily intake of sorbitan monopalmitate, monostearate, and tristearate, and of sorbitan monolaurate and monooleate at up to 25 mg/kg body-weight calculated as total sorbitan esters. 

Anchoic acid. See/ zelaic acid Anesthetic ether. See Ethyl ether Anhydrite (natural forn. See Calcium sulfate 3,6-Anhydro-d-galactan. See Carrageenan (Chondrus crispus) 1,4-Anl dro-D-glucitol, 6-hexadecanoate. See Sorbitan palmitate Anhydro-d-ghicitol monooctadecanoate. See Sorbitan stearate Anhydrohexhol s uioleate. See Sorbitan sesquioleate Anhydrosorhitol dioleate. See Sorbitan dioleate Anhydrosorhitol monolaurate. See Sorbitan laurate Anhydrosorhitol monooleate. See Sorbitan oleate Anhydrosorhitol monostearate. See Sorbitan stearate... 

PEG bases can also be combined with various other bases. They are compatible with cetyl alcohol, cetyl stearyl alcohol, stearic acid, 1,2-propylene glycol, glycerol, glycerol monostearate, and PEG sorbitan monooleate. PEGs are not compatible, however, with paraffin wax, petroleum jelly, oleyl oleates, and hydrogenated peanut oil. Eurther details on the miscibility and compatibility of PEGs with other substances are given in Table 5. 

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