Aqueous surfactant compositions of monoalkyl phosphate ester salts and amphoteric surfactants

An aqueous surfactant composition comprising a surfactant consisting essentially of a) a mixture of mono- and di-alkyl phosphate ester salts, with the molar ratio of mono- to di-alkyl phosphate ester being greater than 50:50 and b) an imidazoline based amphoteric surfactant wherein said composition is essentially free of compounds having a tetra-alkyl ammonium moiety,

• wherein the amphoteric surfactant is selected from the group consisting of cocoamidoalkylamino monoacetate, cocoamidoalkylamino monopropionate, sodium cocoamidoalkylamino hydroxypropyl sulfonate, and sodium caprylamidoalkylamino hydroxypropyl sulfonate;
• and
• wherein said mixture of mono- and di-alkyl phosphate ester salts is a mixture of compounds having the formula (1) and (2):
• wherein R1 and R2 are individually C8-C22 linear or branched, saturated or unsaturated hydrocarbons, m and n are individually integers from 2 to 4, w, x, y and z are individually integers from 0 to 20 and M is individually hydrogen, an alkali metal, amine or alkanolamine.