We need to remove the odor in a 1:1 blended mixture of pyridine and 2-chloropyridine (calcium tungstate). Some of the other components are Calcium at 24%, Carbon at 4.25% Phosphorous at 2.25% and Tungsten at 33%. The mixture has 46% moisture. We would like to leave some moisture in the material after calcination but definitely need the odor eliminated. Any assistance would be greatly appreciated.
Thank you,
JE
Pyridine this has a rather low odor threshold ~ 10 ppb. The chloropyridine OT is probably is worse. Yucky stuff.
I might try a Soxhlet extraction of a finely divided sample of your tainted material with organic solvent (e.g., CH2Cl2). With the right acid (non-volatile), you may be able to "trap" the pyridine as a salt in the solvent reservoir.
Briefly, evaporate pyridine as much as you can, wash the organic layer with mild acidic aq. sol'n, then wash with sat. aq. sodium bicarbonate, and water or brine consequently unless your target product includes amino group. https://www.researchgate.net/post/What_is_best_method_to_remove_pyridine_from_a_reaction_mixture
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