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Sulfobetaines DSB and ASB are classified as internal quaternary amphoteric surfactants. These compounds contain a quaternary amminium cation and a sulfonate anion, which display excellent surface active performances. They have outstanding hard water tolerance, good dispersing ability for lime soaps, compatibility with high levels of inorganic electrolytes, low irritation, evident synergistic effect together with other surfactants. They exhibit high cleaning solutions. The sulfobetaines amphoteric surfactants also show a good viscosity-enhance and foam characterictics formulated with other surfactants over wide PH range.