Sodium Hydroxide → Hypophosphoric acid, calcium salt

Participants

Reaction Steps

A method for producing sodium hypophosphite by reacting elemental phosphorus with aqueous sodium hydroxide in the presence of a sufficient excess of solid calcium hydroxide to convert substantially all of the phosphite ions formed in the reaction to insoluble calcium phosphite whereby a solution of sodium hypophosphite is formed in which excess calcium ions remain in solution as calcium hydroxide and calcium hypophosphite, wherein the improvement comprises:

Provenance & Evidence