... white crystal, easy deliquescence hygroscopic, soluble in water and alcohol, dry-state preservation NaH2PO2.H2O ,105.99Have shiny pearl white ... crystal, easy deliquescence hygroscopic, soluble in water and alcohol, dry-state preservation of relatively stable. A strong reduction ... (Pb)≤1ppm<1ppmARSENIC(As)≤1ppm<1ppmAppearanceFresh, free flowing powderFresh, free flowing powder Sodium hypophosphite