Dear friends ,we introduce our products as below: Appearance White crystalline or powder MF Ca(HCOO)2 CAS NO 544-17-2 Ca,wt. % , ≥ 30.1 Heavy metals,PPM ≤ 20 Insoluble matter in water ,%,≤ 1.0 Dry weight loss,wt. % ,≤ 0.5 PH 6.5-11.0 As(%) PPM ≤ 20 If you wanna more information,pls contact us freely,we'll revert you ASAP,thanks!