... UsesMetallurgy industry :As precipitating and resolving agent for rare earth metal,etc.Organic Synthesis:For 2133 rein,ures form aldehyde powder ... group % ≤0.080.100.20ignition (850oC) % ≤0.080.100.20heavy metal % ≤0.0010.0020.02Iron content % ≤0.00120.0020.01chlorides % ≤0 ...