Tributyl-phosphorotrithioite

The best known of these defoliants are sodium chlorate which has the danger of starting fires, tributyl-phosphorotrithioite (merphos, Folex) its oxygenated relative tributylphosphorotri-thioite (DEF), and endothall (Accelerate). Recent research reports claim that amino methyl phosphonic acid and certain of its relatives were found to be more active than current commercial products. The best known desiccant used for defoliation of cotton is paraquat (1,1 -dimethyl-4,4 -bipyridinium) (8). 

Many trivaient phosphorus compounds, trialkyl phosphites and trialkyl phosphorotrithioite exhibit fungicidal properties, mainly because of their considerable reducing effect and high reactivity (Nishizawa et al., 1959). These compounds are also very phytotoxic, and are therefore used mainly as defoliants, for example, merphos and tributyl phosphorotrithioite. 

TRIBUTYL PHOSPHOROTRITHIOITE (C4H3S)3P FROM ELEMENTAL PHOSPHORUS... 

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