silicon dioxide

(redirected from Crystalline silica)
Also found in: Thesaurus, Medical, Encyclopedia.
Related to Crystalline silica: Amorphous silica

silicon dioxide

n.
Silica.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.silicon dioxide - a white or colorless vitreous insoluble solid (SiO2)silicon dioxide - a white or colorless vitreous insoluble solid (SiO2); various forms occur widely in the earth's crust as quartz or cristobalite or tridymite or lechatelierite
cristobalite - a white mineral consisting of silica; found in volcanic rocks
quartz - a hard glossy mineral consisting of silicon dioxide in crystal form; present in most rocks (especially sandstone and granite); yellow sand is quartz with iron oxide impurities
chert - variety of silica containing microcrystalline quartz
flint - a hard kind of stone; a form of silica more opaque than chalcedony
lechatelierite, quartz, quartz glass, vitreous silica, crystal - colorless glass made of almost pure silica
oxide - any compound of oxygen with another element or a radical
silex - a pure form of finely ground silica
tridymite - a mineral form of silica
Translations
piidioksidi
References in periodicals archive ?
5 [micro]m and smaller) and crystalline silica (quartz).
In addition, it plans to issue proposed rules governing proximity detection devices in mobile machines underground in July and on respirable crystalline silica in April 2016.
OSHA officials have repeatedly stated before the Obama administration ends they fully expect to finalize and enact new regulations aimed at reducing workplace hazards from crystalline silica dust.
The Occupational Safety and Health Administration's proposed standards covering crystalline silica will cost contractors and their suppliers $5 billion per year--nearly $4.
Crystalline silica is a basic component of soil, sand and granite.
Polyfil 35 is said to offer acid resistance, reinforcement and very low crystalline silica and salt content.
Industrial illness including asbestos exposure, crystalline silica exposure, mesothelioma, lung cancer, er, er respiratory disease and deafness.
AFS and its silica working groups, attorneys and outside economic and technological feasible experts have been diligently working directing the industry's comments and discussions with OSHA in reponse to the agency's proposed rule, Occupational Exposure to Respirable Crystalline Silica, 78 FR 56274 (Sept.
If your metalcasting facility uses silica sand in its manufacturing process, then you have heard about the Occupational Safety & Heath Administration's (OSHA) proposed rule for a comprehensive occupational health standard for crystalline silica that was released in September.
The rule would reduce the current PEL of 100 micrograms of crystalline silica per cubic meter of air ([micro]g/cu.
The proposed rule would significantly tighten the current permissible exposure limit (PEL) of 100 micrograms of respirable crystalline silica per cubic meter of air to 50, with an action level of 25.
Along time in the making, the proposed draft regulations lowering the permissible exposure limit (PEL) for crystalline silica were formally released by the U.