Appearance: White Crystalline
NaH2PO2. H2O: 101% min
NaH2PO3: 0.3% max
SO4: 50ppm max
Cl: 50ppm max
Fe: 1ppm max
Ca: 30ppm max
As: 1ppm max
Pb: 1ppm max
Packed in 25kg, 500kg or 1000kg bags, 22mt/20'fcl