Method for preparing copper arsenate compositions

Details Method for preparing copper arsenate compositions Method for preparing copper arsenate compositions

1974-05-23

1978-07-25

Schenkman, Leonard

Drug, bio-affecting and body treating compositions

Immunoglobulin, antiserum, antibody, or antibody fragment,...

Structurally-modified antibody, immunoglobulin, or fragment...

424137, 424140, A01N 1108

Patent

active

041030001

ABSTRACT:
The present invention is directed to copper arsenate compositions which are useful in preparing chromated copper arsenate wood preserving formulations. The copper arsenate compositions are slurries of insoluble copper arsenates in an aqueous solution of copper arsenates. The copper arsenate slurries have a mole ratio of As.sub.2 O.sub.5 to CuO of from about 0.3:1 to about 0.9:1 and are readily soluble in chromic acid to form chromated copper arsenate solutions. The copper arsenate slurries are prepared by reacting copper metal with arsenic acid in the presence of an acid catalyst and an oxidizing agent.

REFERENCES:
patent: 2106978 (1938-02-01), Kamesam
patent: 2388496 (1945-11-01), Pearce et al.
patent: 2438511 (1948-03-01), McMahon
patent: 2573253 (1951-10-01), Farber
Chemical Abstracts 43:2885(b), 1949.
Chemical Abstracts 44:472(g)-473(e).

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