Fosfomycin Sodium (EP 4)

Appearance:        White or almost white, very hygroscopic powder 
Identification:                   Positive Reaction           
PH:                              9.0 ~ 10.5              
Specific optical rotation:           -13.0°~  -15.0°   
Clarity of solution:                Clear (1# Max)           
Color of solution:                   B₉ Max         
Water:                           1.0% Max                 
1,2-Dihydroxypropyl Phosphonate:    1.0% Max          
Heavy metals:                    20ppm Max                 
Assay:                          95.0~101.0%