... quality mgco3 powder, being widely used in many industrial fields... Physicochemical Properties: White amorphous powder, nontoxic, ... shows alkalescence. Easily soluble in acid and ammonium salt solution, it shall resolve and release carbon ... etc. Processing Method:Brine, Soda Method, Ammonium Bicarbonate MethodGrade: industrial gradeExecutive standard:HG/T2959-2000Name of indexIndexTest resultMagnesium ...