The phosphate salt of codeine takes place as white, needle-formed crystals or white crystalline powder. Codeine phosphate is freely soluble in h2o and a little soluble in Alcoholic beverages. The molecular fat is 406.37. Its molecular system is C18H21NO3•H3PO4 • ½ H2O, and it has the subsequent chemical construction.Promethazine with Codeine O