| http://www.w3.org/ns/prov#value | - Suitable neutralising agents are ammonia, preferably as aqueous solution, alkanolamines, i.e. mono-, di- and tri-alkanolamines each containing 1 to 4, preferably 2 or 3, carbon atoms in the alkanol moiety, e.g. triethanolamine, and, in particular, alkali metal hydroxides such as potassium hydroxide and, especially, sodium hydroxide, preferably in the form of their aqueous solutions.
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