Merck, 900500-500G, Calcium carbonate

General description
Calcium carbonate is a calcium salt commonly found in shells and skeleton of marine animals. It is an inexpensive, non-toxic and easily available reagent with a wide range of applications such as uptake of CO₂ and extraction of heavy metals and arsenic from ground water. Its crystals exist as 3 different polymorphs namely, calcite, aragonite, and vaterite. The kinetics of pyrolysis of calcium carbonate under non-isothermal conditions have been investigated.
Application
Calcium carbonate may be used:
As a pore generating agent to prepare porous ceramics.
As chelometric standard for the standardization of EDTA solution.
To extract aluminium by microwave induced thermal activation of coal fly ash (CFA).

Iron-Catalyzed Efficient Synthesis of Amides from Aldehydes and Amine Hydrochloride Salts

Iron-Catalyzed Efficient Synthesis of Amides from Aldehydes and Amine Hydrochloride Salts
Legal Information
ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany
Redi-Dri is a trademark of Sigma-Aldrich Co. LLC