... point at 252.6°C, and PH value of 1% solution is 4.5.Use for: Used to manufacture metaphosphate in ... point at 252.6°C, and PH value of 1% solution is 4.5.Use for: Used to manufacture metaphosphate in ... oxide (P2O5) ≥%51.551.5Potassium Oxide (K2O) ≥%3434PH Value(1%solution)4.4-4.84.4-4.8Moisture ≤%0.20.2Heavy ...