| http://www.w3.org/ns/prov#value | - Suitable quaternizing agents are for example alkyl halides having from 1 to 18 carbon atoms in the alkyl group, eg. methyl chloride, methyl bromide, methyl iodide, ethyl chloride, propyl chloride, hexyl chloride, dodecyl chloride, lauryl chloride and benzyl halides, in particular benzyl chloride and benzyl bromide.
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