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silicon dioxide
(redirected from Crystalline silica)

    Also found in: Dictionary/thesaurus, Medical, Wikipedia 0.02 sec.
silicon dioxide: see silica silica or silicon dioxide, chemical compound, SiO2. It is insoluble in water, slightly soluble in alkalies, and soluble in dilute hydrofluoric acid. Pure silica is colorless to white.
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silicon dioxide
(SiO2) A hard, glassy mineral found in such materials as rock, quartz, sand and opal. In MOS chip fabrication, it is used to create the insulation layer between the metal gates of the top layer and the silicon elements below.
silicon dioxide [′sil·ə·kən dī′äk‚sīd]
(inorganic chemistry)
SiO2Colorless, transparent crystals, soluble in molten alkalies and hydrofluoric acid; melts at 1710°C; used to make glass, ceramic products, abrasives, foundry molds, and concrete.
silica, silicon dioxide
A white or colorless substance, nearly insoluble in water and in all acids except hydrofluoric; extremely hard; fuses to a colorless amorphous glass.
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This form is not effective as an insecticide and may also contain a high level of crystalline silica which, when inhaled, can cause silicosis, a deadly lung disease.
THERE ARE NATURAL WAYS TO CONTROL INSECTS by The Santa Fe New Mexican (Santa Fe, NM)
It also may contain a high level of crystalline silica which, when inhaled, can cause silicosis, a deadly lung disease.
Diatomaceous earth is tops for pest control by Fagerlund, Richard / Countryside & Small Stock Journal
According to the non-profit Cancer Prevention Coalition, some other problematic chemicals found in many household cleaners include crystalline silica, an irritant to the eyes and lungs and a likely carcinogen, and butyl cellosolve, which has been linked to kidney and liver problems and is reportedly toxic to forming cells.
Dear EarthTalk: I've read that household cleaners contain ... by Stewart, Christine / EarthTalk: Questions & Answers About Our Environment. A Weekly Column
 
 
 
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