Ii. Quality index Items, index Appearance, white powder solid Active content %, 90.0 Active content(hedp.H2o) %, 98.0 Phosphoric acid content(as po43-) %, 0.50 Phosphorous content(as po33- ) %, 0.50 Chloride (as cl-)%, 0.10 Fe (as fe) (ppm), 5.0 Ph (1% aqueous solution), 2.0