... :Calcium Formate, technical grade•CAS Number:544-17-2 •Molecular Formula:Ca (HCOO)2 •Molecular Weight:130.12 •Appearance:White, free ... in the tannery. CompositionSpecification(Tech grade)(Purity),wt. % ,min98(Ca content),wt. % ,min30.1(Heavy metals),(Pb)---(Water insoluble),.---(Dry ... .5-7.5 CompositionSpecification(Feed grade)(Purity),wt. % ,min98(Ca content),wt. % ,min30.1(Heavy metals),(Pb)0.001( ...