Dioxane removal from ether sulfate

Details Dioxane removal from ether sulfate Dioxane removal from ether sulfate

1980-04-07

1981-08-25

Chan, Nicky

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2603406, 260458C, C07C14102

Patent

active

042858810

ABSTRACT:
Dioxane impurities in ether sulfates are removed by using a novel steam stripping technique in which water is neither added to nor removed from ether sulfate. This is possible because the chemical potential of water in the vapor phase is kept at the same value as that of water in the solution phase. In this way, thickening and foaming are avoided while dioxane levels can be reduced to below 10 parts per million by weight in a single pass.

REFERENCES:
patent: B466304 (1976-03-01), Wolf et al.
K. L. Mittal, Editor, "Solution Chemistry of Surfactants", vol. 1, Plenum Publ. Corp., 1979, pp. 195-218.

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