... Max0.040.040.02Residue on ignition, % Max0.080.100.05Heavy metal (Pb), % Max0.0020.0020.001Iron ( Fe ) % Max0 ... tracer in oil fields, thinning agent, as intermediate for metal thiocyanates etc.Textile: printing, dyeing and finishing operations ... and fungicidesPhotographit: Stabilizer, accelerator, etc.Metal finishing: Plating, flotation agent.as intermediate for metal thiocyanates (NaSCN, KSCN, CuSCN, ...