HEAVY METAL TREATING AGENT AND TREATING METHOD OF HEAVY METAL USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a piperazinedithiocarbamate superior as a heavy metal treating agent without precipitation of solid contents at a low temperature even at a high concentration. SOLUTION: This heavy metal treating agent comprises the piperazinedithiocarbamate having 0.7 wt.% or less of alkali hydroxide concentration. The agent does not precipitate the solid contents at a low temperature even when at a high concentration of 36-44 wt.% and does not generate gaseous substances such as hydrogen sulfide and carbon sulfide, so that it can be employed effectively and safely. COPYRIGHT: (C)2007,JPO&INPIT