Determination of extraction constants of metal diethyldithiocarbamates

✍ Scribed by Jiřf Starý; Karel Kratzer

• Book ID: 104100803
• Publisher: Elsevier Science
• Year: 1968
• Tongue: English
• Weight: 692 KB
• Volume: 40
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/s0003-2670(00)86699-4

✦ Synopsis

Cupral (the sodium Sitlt of dicthyldithiocarl~amic acid) is one of the best known organic reagents which form extractable chelates with many metals. Although many qualitative data of the extraction of metal clictl~yldithiocarl~~~m~~tcs have been publishcd1e2, no information on the extraction constants is available. The low stability of dicthyldithiocarbamic acid and the high values of the extraction constants make tllc determination of these constants rather difficult.

In the work described below the extraction of 14 metal diethyldithiocarbamatcs into carbon tetrachloride was investigated in order to find their extraction constants and two-phase stability constants. These values can be used for prediction of optimum conditions for separation of various metals and for the substoichiometric determination of traces of metals.