Molecular Weight: 18.02 Molecular Formula: H2O CAS number: 7732-18-5 TCL016, Water, Molecular biology grade is sterile filtered water treated with 0.1% Diethylpyrocarbonate (DEPC). It is prepared by passing water through continuous process which includes water pretreatment, reverse osmosis, deionisation, and filtration. It is produced specifically for molecular biology applications like DNA/RNA purification, protein applications and experiments involving RNA. DEPC inactivates RNases by carboxylation of specific amino acid side chains in the protein