Email this pagePrint this page Calcium Carbonate - Natural Chalk Go back to: Chemical Reagents, pH Indicators and Biological Stains Product Code: C1423 F.W. 100.09CAS# 471-34-1Powder Hazard Rating4-Extreme 3-Severe 2-Moderate 1-Slight 0-Minimal Health0 Flammability0 Reactivity0 500 grams$11.42 each 12 x 500 grams$7.61 each 2.5 kg$19.27 each 4 x 2.5 kg$12.85 each 3-D Molecule Model of Calcium carbonate : From the ChemExper Chemical Directory MSDS for Calcium Carbonate - Natural Chalk