| http://www.w3.org/ns/prov#value | - Mention may be made, for example, of glycol, propylene glycol, 1,3-propanediol, 1,3- and 1,4-butanediol and 1,5-pentanediol.According to an advantageous form of the invention, the working solution is an alcoholic solution of an organic acid of arsenic and is disclosed in Patent EP 70,155, the contents of which are incorporated in the present application.
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