Process for making tetrakis(hydroxymethyl) phosphonium oxalate

Details Process for making tetrakis(hydroxymethyl) phosphonium oxalate Process for making tetrakis(hydroxymethyl) phosphonium oxalate

C - Chemistry, Metallurgy

07

F

260/506.5

C07F 9/54 (2006.01)

Patent

CA 1039307

Abstract of the Disclosure Tetrakis(hydroxymethyl)phosphonium oxalate is prepared by the direct reaction of at least a stoichiometric quantity of formaldehyde with phosphine and oxalic acid at a temperature between about 40° to 75°C and in the absence of a catalyst and by any method which affords intimate contact of the reactants. The product is useful as a flame retardant for cellulose fabrics.

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