stabliity of sodium methoxide

[starlight]

For storage of sodium methoxide would it be safest to make a 30% solution in methanol rather than storing the anhydrous material as a powder (spontaneous combustion on exposure to moist air is the risk being considered)

[Barium]

Either way is fine as long as you keep air out. It is not that flamable when stored dry. Get yourself a tank of nitrogen or argon. Those are not expensive and will provide excellent protection for your air sensitive materials.