after baking epsom salts for 2hrs @ 200C, the salts when from large clear crystals to a hard white sheet that turned to powder when scaping. i scraped and put in an oven dried mason jar. is this anh. MgSO4?
also can you microware dry MgSO4 and CaCl2?
after baking epsom salts for 2hrs @ 200C, the salts when from large clear crystals to a hard white sheet that turned to powder when scaping. i scraped and put in an oven dried mason jar. is this anh. MgSO4?
Yes, you have anhydrous MgSO4 now.
also can you microware dry MgSO4 and CaCl2?
yes, just put it on a pyrex and nuke it/check it until crunchy and hard frosty white. U may need to change the position on the turny-tray so it doesn it evenly.
Careful microwaving! Start at low power, heat for a few minutes, let cool, repeat at slightly higher power for a few minutes, let cool, increase power a little, etc.
Otherwise you can have an orange hot spot in the MgSO4 that will be hot enough to melt the pyrex; the heating is uneven enough to break it also. You avoid this by using a turntable, and by doing the drying in increments of increasing power.
I'm still trying to find the proper time and temperature needed to make DampRid (CaCl2) anhydrous. Anyone know? I have used TFSE and searched the Net, but I can't find this info. ::)
"loses all H2O at 200°"
HTH
(the CaCl2 i buy is anhydrous. you'll notice when it doesn't lose any H2O anymore.)
OK... thanks for the info. I thought DampRid might react differently because of its low purity... guess not.