| http://www.w3.org/ns/prov#value | - In carrying out the above-described process, the salt of hydroxylamine to be preferably employed is that of a mineral acid such as hydrochloric acid salt, sulfuric acid salt and the like, and the base to be preferably employed is an alkali metal hydroxide such as sodium hydroxide, potassium hydroxide and the like, an alkali metal or an alkaline earth metal salt of acetic acid such as sodium acetat
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