Method of recovering 3,6-dichloropicolinic acid from basic aqueo

Details Method of recovering 3,6-dichloropicolinic acid from basic aqueo Method of recovering 3,6-dichloropicolinic acid from basic aqueo

1981-02-02

1982-06-08

Rotman, Alan L.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

204 73R, 204 98, 546326, C07D21355

Patent

active

043340741

ABSTRACT:
3,6-Dichloropicolinic acid, a highly active plant growth regulator, is recovered from basic, aqueous solutions thereof by acidification with HCl in the presence of a flocculant, separating the precipitated 3,6-dichloroacid, extracting the unprecipitated acid from the mother liquor with a solvent and stripping the extracted acid from the solvent with another portion of the basic, aqueous feed solution.

REFERENCES:
patent: 3317549 (1967-05-01), Johnston
patent: 4087431 (1978-05-01), McGregor
patent: 4217185 (1980-08-01), Kyriacou et al.

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