Alkyl isethionates

Alkyl isethionates such as sodium cocoyl isethionate are used mainly in creams, toilet bars, shower gels, bath foams, and baby products. These derivatives are obtained from sodium 2-hydroxyethane-sulfonate, which can react either by esterification with fatty acids or condensation with fatty acid chlorides as follows ... 

Despite its potential application to charged surfactant analysis, there have been relatively few publications of ion chromatography applications. Dionex in their applications literature demonstrate several possible separations including alkyl sulphates the separation of sodium isethion-ate from its alkyl isethionate ester on a Vydac 302 IC column with methanol 20mM phthalic acid water (3 5 12, 2.5) and conductivity detection is described in [49]. 

The solubihty characteristics of sodium acyl isethionates allow them to be used in synthetic detergent (syndet) bars. Complex blends of an isethionate and various soaps, free fatty acids, and small amounts of other surfactants reportedly are essentially nonirritant skin cleansers (66). As a rule, the more detersive surfactants, for example alkyl sulfates, a-olefin sulfonates, and alkylaryl sulfonates, are used in limited amounts in skin cleansers. Most skin cleansers are compounded to leave an emollient residue on the skin after rinsing with water. Free fatty acids, alkyl betaines, and some compatible cationic or quaternary compounds have been found to be especially useful. A mildly acidic environment on the skin helps control the growth of resident microbial species. Detergent-based skin cleansers can be formulated with abrasives to remove scaly or hard-to-remove materials from the skin. 

APG = Alkyl poly glucoside, SCI = Sodium cocoyl isethionate,... 

APG = Alkyl poly glucoside, SCI = Sodium cocoyl isethionate, CAPB=Coco amido propyl betaine, SLES = Sodium lauryl ether sulfate, MAP=Mono alkyl phosphate, SDS=Sodium dodecyl sulfate... 

MIPA-lauryl sulfate Sodium C9-22 alkyl sec sulfonate Sodium cocoyl isethionate Talloweth... 

Ammonium nonoxynol-4 sulfate Cl2-14 alkyl dimethyl betaine Disodium cocoamphodipropionate Disodium myristamido MEA-sulfosuccinate Guar hydroxypropyltrimonium chloride Laureth-6 carboxylic acid Lauryl betaine Orange (Citrus aurantium dulcis) peel wax PEG-3 cocamine PEG-10 cocoate PEG oleamine PEG-80 sorbitan laurate PEG-40 sorbitan perisostearate PPG-5 lanolin alcohol ether Sodium cocoamphoacetate Sodium cocoyl isethionate TEA-lauryl sulfate dispersant, shampoo cosmetics Disodium oleamido MIPA-sulfosuccinate dispersant, shampoo personal care Disodium oleamido MIPA-sulfosuccinate dispersant, shellac Triethanolamine dispersant, shoe polishes Diglycol/CHDM/isophthalates/SIP copolymer dispersant, silicon emulsions C12-14 pareth-8 C12-15 pareth-7 C12-15 pareth-8 Cl 3-15 pareth-20 Trideceth-15... 

Sodium cocoyl isethionate TEA-lauryl sulfate foam builder, bubble baths cosmetics Disodium oleamido MIPA-sulfosuccinate foam builder, bubble baths personal care Disodium oleamido MIPA-sulfosuccinate foam builder, car wash compounds TEA-dodecylbenzenesulfonate foam builder, car washes Sodium nonoxynol-4 sulfate foam builder, carbonated beverages Quillaja (Quillaja saponaria) foam builder, carpet cleaners Disodium lauryl sulfosuccinate foam builder, carpet shampoo Ammonium lauryl sulfate foam builder, carpet/upholstery cleaners Disodium myristamido MEA-sulfosuccinate foam builder, carpetbacking C12-14 alkyl dimethyl betaine Disodium cocoyl sulfosuccinamate Disodium N-oleyl sulfosuccinamate... 

There are several approaches utilized to develop skin-friendly dishwashing formulations. The first approach is to select mild surfactants. Some examples of mild surfactants are the ethoxylated alcohols, alkyl polyglucosides, and although not commonly used in dishwashing detergents, sulfo-succinate esters and isethionates. 

There is plenty of information available in literature on liquid crystalline and isotropic phases of different surfactants, but the study of the solid phases is limited to only soaps [12-19]. The basic reason for the lack of solid phase studies of synthetic surfactants is their limited use in solid form. The low KP of these surfactants limits their use to liquid products. Owing to a relatively high KP, sodium cocoyl isethionate (SCI), alkyl glycerol ether sulfonate (AGES), and sodium cocoyl monoglyceride sulfate (CMOS) form solid phases at room temperature, but there is hardly any information available on these solid phases. 

Alkyl sulfosuccinates, AG-0C(=0)CH2CH(S03-)C0(CH2),H Isethionates, AG-OCH2CH2SO3-Ether carboxylates, AG-0(CH2)xC02-Cationic alkyl glucosides derivatives... 

Acid. Conversion to carboxylic acid and alcohol takes place. The sulphonate group may be on either of these. Thus acyl isethionates yield a fatty acid and isethionate ions, mono- and di-alkyl sulphosuccinates yield fatty alcohols and sulphosuccinic acid, and a-sulphonated fatty esters yield the a-sulphonated fatty acid and a low-molecular-weight alcohol. 

All surfactants were tested at 1% of active ingredients. Abbreviations sodium lauryl sulfate (SLS), sodium laureth sulfate with x ethoxylations (SLEX-xEO), ammonium lauryl sulfate (ALS), paraffine sulfonate (PS), linear alkyl benzene sulfonate (LAS), sulfosuccinate (sulfo), sodium cocoyl isethionate (SCI), mono alkyl sulfate (MAP), cocamidopropyl betaine (CAPB), alkyl polyglucoside (APG), alcohol ethoxylate (Ale. ethbx.). 

Chem. Descrip. Syndet based on alkyl sulfate and cocoyi isethionate Uses Soap raw material In syndet bars for personal care use Properties Wh. to ivory flakes Tensiofix BCZ [OmnIChem SA]... 

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