4A Blue Indicating Molecular Sieve

mSORB® 4A blue indicating molecular sieve is an alumino-silicate with sodium as the charge balancing cation, giving it a 4 angstrom pore opening. It has the same physical properties and adsorption capacity as non-indicating 4A molecular sieve, but it is injected with cobalt chloride, a moisture indicating metal salt. The sieve is blue when dry and changes to beige when saturated with moisture. This allows the user to visually determine when the molecular sieve has reached its equilibrium capacity.

Chemical Formula: Na12[(AlO2)12(SiO2)12] • nH2O+CoCl2