• Post Reply Bookmark Topic Watch Topic
  • New Topic

food grade diatomaceous earth - shelf life??  RSS feed

 
Posts: 3
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
We bought some food grade DE years ago. Was wondering if it has a shelf life?
 
pollinator
Posts: 2392
79
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator

rae kirk wrote:We bought some food grade DE years ago. Was wondering if it has a shelf life?



Being an inorganic oxide (SiO2), it will probably outlast any shelf it is sitting on. There are no chemical reactions that could decompose it, and the only physical process would be to subject it to heat and pressure, like that found at a subduction zone at the edge of a continental plate. That kind of heat and pressure, for a long enough time, and it could metamorphosize into a denser crystal structure. It has no nutrients to support bacterial life, so as long as it is in a sealed container, it should remain sterile and free of any pathogens.
 
And will you succeed? Yes you will indeed! (98 and 3/4 % guaranteed) - Seuss. tiny ad:
Rocket mass heaters in greenhouses can be tricky - these plans make them easy: Wet Tolerant Rocket Mass Heater in a Greenhouse Plans
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
Boost this thread!