| http://www.w3.org/ns/prov#value | - The present compounds can be used in all of the above situations by employing a step in which the objectionable emulsions are treated with dilute acids which, since there is l Q0 onzonla-onoonionnmw in which R and R represent a hydrogen atom or an alkyl group and together contain from 8 to 24 carbon atoms, R is a hydrogen atom or a methyl group, R is a lower alkyl group, A is a chalco-gen having a
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