The heavy metal fixation medicine and stability revised mannered null jichiokarubamin (salt

摘要

PPROBLEM TO BE SOLVED: To provide a heavy metal-fixing agent, which suppresses generation of toxic gases without detriment to heavy metal-fixing effects, for replacing a conventional heavy metal-fixing agent comprising a dithiocarbamic acid (salt) aqueous solution which generates toxic gases when it is preserved, transported or used, and a method for improving stability thereof. PSOLUTION: The one-pack heavy metal-fixing agent comprises an aqueous solution of dithiocarbamic acid (a salt thereof) (A) and, incorporated thereinto, a phosphate salt (B) and an oligomer (C) bearing at least one functional group selected from the group consisting of a carboxy group, sulfo group, hydroxy group, phosphate group, phosphonic acid group and alkali metal salt groups thereof and having a number-average molecular weight of 1,000-30,000. PCOPYRIGHT: (C)2006,JPO&NCIPI