There exist two forms of diatomite in use today: food-grade (unheated/unadulterated) and industrial grade (heated). Food-grade diatomaceous earth is naturally dried (termed ‘uncalcined’) and has different properties and structure than industrial-grade diatomite. The heating of the diatomaceous earth for industrial use changes the structure from amorphous (unstructured, free-flowing) characteristics to a crystallized, structured form (calcined).
The overwhelming majority of diatomaceous earth is used in industrial applications, such as:
- Insecticide and commercial pesticide
- Filtration medium in water systems, swimming pools, and food
- Mild abrasive use in hygiene products such as toothpaste and facial washes
- Absorbent use such as in toxic liquid spills, cat litter, and ethylene gas
- Preservative...
