Elimination of sulfide odor in thiocarbamate herbicides

Details Elimination of sulfide odor in thiocarbamate herbicides Elimination of sulfide odor in thiocarbamate herbicides

1991-10-11

1993-03-09

Warden, Robert J.

Chemical apparatus and process disinfecting, deodorizing, preser

Process disinfecting, preserving, deodorizing, or sterilizing

Deodorizing

71DIG1, 504300, 504305, 504220, 504249, 504287, A61L 200, A01N 3700

Patent

active

051924986

ABSTRACT:
It has now been discovered that the undesirable odor in thiocarbamate compounds can be suppressed or mostly eliminated by the process of this invention. Generally, the process of this invention involves mixing an aqueous solution of sodium hypochlorite, calcium hypochlorite or chloramine-B with the odorous thiocarbamate compound for a sufficient period of time, followed by a second step of mixing citric acid, maleic acid or oxalic acid with the treated thiocarbamate compound to eliminate chlorodialkylamine compounds produced in the first step.

REFERENCES:
patent: 4125589 (1978-11-01), deVries
patent: 4541986 (1985-09-01), Schwab et al.
patent: 4594239 (1986-06-01), Pluim, Jr.
patent: 4803047 (1989-02-01), Pluim, Jr.
patent: 5019339 (1991-05-01), Keeney et al.

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