Thiohumic acid, a process for preparing same, and its use for ab

Details Thiohumic acid, a process for preparing same, and its use for ab Thiohumic acid, a process for preparing same, and its use for ab

1973-12-20

1976-01-13

Thomas, Jr., James O.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260515H, 252184, 210 24, C07C15300

Patent

active

039324940

ABSTRACT:
The compound thiohumic acid resulting from replacing at least a part of the carboxyl groups in humic acid by thiocarboxyl groups, i.e., ##EQU1## as well as a heavy metal adsorbent containing thiohumic acid as its active ingredient. This new compound is obtained by treating humic acid with a halogenating agent to form humic acid halide and treating such halide with a thiolating agent.

REFERENCES:
patent: 3505366 (1970-04-01), Greco et al.
Fuchs et al., Chem. Abstract, 22, 583 (1928).
Cram et al., Organic Chemistry, pp. 253-254, 351-353, (1964).
Steelink, J. Chem. Educ., 40, 379 (1963).

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