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ACGIH is a 501(c)(3) charitable scientific organization that advances occupational and environmental health.
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ACGIH advances the careers of professionals working in the occupational and environmental health, industrial hygiene, and safety communities interested in defining their science.
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This section has been established to help educate industry, government, and the public on what TLVs and BEIs are, and how TLVs and BEIs may best be used.
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ACGIH is committed to providing its members and other occupational and environmental health professionals with the training and education they need to excel in their profession.
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ACGIH has publications in many different areas that fit your needs in your field.
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ACGIH Digital Library
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If you have purchased and need to access the Digital Library, click here.
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- Foundation
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- Foundation
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The Foundation for Occupational Health & Safety (FOHS) is a 501(c)(3) corporation fostering the expanded establishment of occupational exposure values throughout the world.
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SILICA, CRYSTALLINE — α-QUARTZ AND CRISTOBALITE
SILICA, CRYSTALLINE — α-QUARTZ AND CRISTOBALITE
Molecular formula: SiO2
α-QUARTZ
CAS number: 14808-60-7; 1317-95-9
Synonyms: Crystallized silicon dioxide; Quartz, silica, tripoli
CRISTOBALITE
CAS number: 14464-46-1
Synonyms: Calcined diatomaceous earth
TLV–TWA, 0.025 mg/m3, Respirable particulate matter
A2 — Suspected Human Carcinogen
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