Diatomaceous earth
Diatomaceous Earth
Diatomaceous earth (/ˌdaɪ.ətəˈmeɪʃəs ˈɜːrθ/), also known as D.E., diatomite, or kieselgur/kieselguhr, is a naturally occurring, soft, siliceous sedimentary rock that is easily crumbled into a fine white to off-white powder.
Etymology
The term "Diatomaceous earth" comes from the root words "diatom", a type of hard-shelled algae, and "earth", referring to the soil-like substance in which these organisms are found.
Description
Diatomaceous earth is made up of the fossilized remains of tiny, aquatic organisms called diatoms. Their skeletons are made of a natural substance called silica. Over a long period of time, diatoms accumulated in the sediment of rivers, streams, lakes, and oceans. Today, silica deposits are mined from these areas.
Uses
Diatomaceous earth has a variety of uses. These include:
- Pest control: The fine powder absorbs lipids from the waxy outer layer of insects' exoskeletons, causing them to dehydrate and die.
- Filtration: The fine powder can be used in water filters due to its porous nature.
- Abrasives: In metal polishes and toothpaste.
- Absorbents: For liquids including industrial spills and pet litter.
- Stabilizing component: In dynamite, it is used as a stabilizer.
Health Risks
While food grade diatomaceous earth is safe for consumption in humans and animals, inhalation of it can be harmful to the lungs, especially for people with respiratory issues.
Related Terms
External links
- Medical encyclopedia article on Diatomaceous earth
- Wikipedia's article - Diatomaceous earth
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