10043-84-2 17308-52-0 19893-32-4 CCRIS 3944 EINECS 233-143-4 Manganese bis(phosphinate) Manganese hypophosphite Manganese hypophosphite (Mn(H2PO2)2) Manganese(2+) hypophosphite (1:2) Manganese(II) hypophosphite Manganous hypophosphite Phosphinic acid, manganese(2+) salt (2:1)