Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Epsom Salts browning when dehydrating - burning or normal?

  1. Mar 18, 2015 #1
    I heated epsom salts in the oven at 450F to make some make-shift desiccants and it went from white (some even clearish) crystals to solid white powder (caked together) with the edges turning a light shade of brown and a deeper brown at the 4 corners of the pan.

    Can this damage the MgSO4, is this impurities or what? Is it over-heating? Can it be left in the oven too long and damage the compound?
     
  2. jcsd
  3. Mar 19, 2015 #2

    Bystander

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    2016 Award

    The hydrate.
    Mostly anhydrous.
    Little oven cleaner residue, soap residue, odd iron from the pan, other sources being cooked out (chromatographed) through your "column packing" in two dimensions, a layer in the pan.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Epsom Salts browning when dehydrating - burning or normal?
  1. Ethanol and dehydration (Replies: 10)

  2. Dehydration reaction (Replies: 5)

  3. Dehydration reaction (Replies: 2)

  4. Dehydrating agents (Replies: 10)

Loading...