Triazolopyrimidine extractants

Details Triazolopyrimidine extractants Triazolopyrimidine extractants

1987-03-23

1988-04-19

Daus, Donald G.

Organic compounds -- part of the class 532-570 series

Organic compounds

Pteroyl per se or having -c-, wherein x is chalcogen, bonded...

C07D40304, C22B 300

Patent

active

047390549

ABSTRACT:
Metal values, particularly copper values, are extracted from aqueous solutions containing halide or pseudohalide anion using 6, 7 substituted triazolopyrimidine wherein the 6-substituent is a group --CO--OR1 where R1 is a hydrocarbyl group containing from 1 to 35 carbon atoms, preferably an alkyl group and wherein the 7-substituent (R2) is hydrogen or a hydrocarbyl group containing from 1 to 35 atoms wherein R1 and R2 taken together contain a total of from 5 to 35 saturated carbon atoms.

REFERENCES:
Birr, Stabilization of Photographic Silver Halide Emulsions, (1974: Focal Press Ltd; New York), p. 209.
Chemical Abstracts, vol. 54, no. 22, Nov. 1960.

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