prov:value
| - Specific examples of the hydrophylic group are --OH, --COOM, --OSO3 M, --SO3 M, or the groups of the formula: ##STR21## wherein M is a hydrogen atom, an alkali metal atom, an alkaline earth metal atom, an ammonium group or a substituted ammonium group, A is a hydrogen atom or a lower alkyl group, X is a halogen atom such as a chlorine or bromine atom, m is an integer of 1 to 20, and R9 is an alkyl
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