Organic compounds -- part of the class 532-570 series – Organic compounds – Phosphorus esters
Patent
1991-07-30
1993-02-23
Higel, Floyd D.
Organic compounds -- part of the class 532-570 series
Organic compounds
Phosphorus esters
558 71, C07F 902, C07F 9165
Patent
active
051891956
ABSTRACT:
Stable S,S,S-tributylphosphorotrithioate having reduced levels of the odorous by-product dibutyl disulfide is produced by adding a caustic solution having a concentration of less than 10% to crude S,S,S-tributylphosphorotrithioate until the pH remains constant. In a preferred embodiment, a solution of sodium hydroxide having a concentration of less than 10% is used in an amount such that at least 0.1 mole of sodium hydroxide is present for each mole of crude S,S,S-tributylphosphortrithioate.
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Levy Edward R.
Newallis Peter E.
Prasad Vidyanatha A.
Gil Joseph C.
Higel Floyd D.
Miles Inc.
Whalen Lyndanne M.
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