What it is
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- Composition: Primarily amorphous silica (SiO2cap S i cap O sub 2𝑆𝑖𝑂2), but also contains trace minerals like calcium, magnesium, and iron.
- Structure: Under a microscope, its particles have sharp, jagged edges that are harmless to humans but lethal to insects, dehydrating them.
- Types: There are different grades, with food-grade being safe for consumption and pest control, while filter-grade (crystalline) is for pools and not for ingestion.
Common uses
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- Pest Control: Kills crawling insects (ants, bedbugs, cockroaches) by damaging their waxy outer layer, causing dehydration.
- Filtration: Used in water purification and industrial filtration.
Industrial: Acts as a filler, anti-caking agent, or insulator in various products like paints, plastics, and ceramics.
Safety
- Inhalation: Can irritate lungs; avoid inhaling it, even food-grade DE.
- Environmental: Non-toxic to fish, birds, and other wildlife, though it can affect beneficial insects like bees.







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