
Organo phosphonium salts of the formula: A [R.sup.1 R.sup.2 R.sup.3 PCH.sub.2 CH.sub.2 Q] .sym. X .crclbar. are prepared by reacting compounds of the formulas R.sup.1 R.sup.2 R.sup.3 PCH.sub.2 CH.sub.2 OY.sup.. X (I) or R.sup.1 R.sup.2 R.sup.3 PCH.dbd.CH.sub.2.sup.. X (II) with H-Q wherein: X is halogen, Y is the residue of an acylating agent, and Q is the residue of a reactant having an electronegative group and providing a replaceable hydrogen atom (H) which is replaced by the R.sup.1 R.sup.2 ...











