sodium diphenylphosphide en · NOUN
Meanings
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(uncountable) A chemical compound with the formula Ph₂PNa; Ph = Phenyl.
Sodium diphenylphosphide (Ph₂PNa) is readily prepared by adding Na to a solution of the diphosphine in dry Et₂O or THF (exothermic!), whereby the colour becomes yellow and the orange Na salt separates.
2003, W. L. F. Armarego, Purification of Laboratory Chemicals, Butterworth-Heinemann, page 536: