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The short answer: Unless you are inhaling it as a dust on a fairly continuous basis, then no.. it's perfectly safe. SiO2 is the single most common compound on the face of the earth. It's in various quantities in all of the foods that you eat, with the largest contributions from plants that have absorbed it from the ground. It is readily absorbed and excreted into the urine. It is the basic chemical compound of sand, glass, and most rock. However, don't be bothered by this because like all other chemical compounds, the formation that it takes in relation to fellow molecules determines a lot of its properties. For example, comparing the SiO2 in the food to you eat to the SiO2 in the window next to you, is like comparing the steam in your shower to the iceberg that sunk the titanic. Yeah, the steam and the iceberg are made of the same basic compound (H2O), but they have vastly different properties because of the relationship of the molecules to one another and whats been done to them.

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14y ago

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