| http://www.w3.org/ns/prov#value | - The preferred quaternary ammonium disinfectant has the formula ##STR2## wherein R1 is a substituted or unsubstituted alkyl or alkylene group containing from about 8 to about 20 carbon atoms, preferably from about 12 to about 18 carbon atoms; R2, R3 and R4 are each selected from the group of substituted or unsubstituted alkyl or alkylene groups containing from 1 to 4 carbon atoms and benzyl groups,
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