Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
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).
Arita Seiji
Miki Toshiharu
Nakagawa Masanao
Nakamura Takato
Yoshida Hisayoshi
Chan Nicky
Daniel William J.
Director-General of the Agency of Industrial Science and Technol
Thomas, Jr. James O.
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