Mag chloride ??

[FragIt Dan]

Originally Posted by Chin_Lee

Yes it is still safe to use. Its no different if you were to add water to them now or if they had absorbed the water from the air before.
Many of these chemicals (Calcium and magnesium mixes) are desicants to a degree in that they will absorb any moisture in the air. Just makes it hard to weigh/measure them.
I just recently found out that Dri-Air (the stuff you put into RV's and marine boats to take the moisture out of the air during storage) is just Calcium Chloride.

+1

I had the same happen to me, poorly fitting lid, and used the rest up with no problem. I just measured the wet stuff by volume, rather than weight. You could also jus dissolve it in water to full saturation and I think you will end up with ~100, 000 ppm (?), others might be able to confirm this. Most of the mg supplements out there are around that level, and when I make mine up I find saturation is at about 110, 000 ppm with anhydrous mg cl/su mix.