We are manufacturer and exporter of Phosphorous acid, and all of our products are exported. The quality and service are recommendable. ITEMS SPECIFICATION APPEARANCE WHITE CRYSTAL H3PO3 ≥98.5% Fe3+ ≤0.002%(20ppm) PO43- ≤0.2% SO42- ≤0.008% Cl- ≤0.01% Package: 25KG/Wave bag, 500KG/Jumbo bag 20MT/20'FCL