闪点	300℃
沸点
密度
储存条件	Moisture sensitive

Wittig olefination with carbonyl compounds can be carried out under basic, 2-phase conditions; the phosphonium salt acts as its own phase-transfer catalyst: Synthesis, 295 (1973). Benzylidene triphenylphosphoranes (formed with n-BuLi) are coupled by reaction with sulfur to give stilbenes, with elimination of triphenylphosphine sulfide: Chem. Ber., 103, 2995 (1970).