... HS code: 2835100000 Property:Sodium hypophosphite (NaH2PO2, also known as sodium phosphinate) is the sodium salt of hypophosphorous acid and ... water, and easily absorbs moisture from the air. Sodium hypophosphite should be kept in a cool, dry ... phosphine gas, causing irritation to the respiratory tract.Specification: PARAMETERUNITSTANDARDRESULTSodium Hypophosphite%≥101.0102.9Sodium Phosphite%≤0.20 ...