CRYSTALLINE SILICAS - RESPIRABLE
Compound Group

The various forms of crystalline silica are: α-quartz, β-quartz, α-tridymite, β-tridymite, α-cristobalite, β-cristobalite, keatite, coesite, stishovite, and moganite. NIOSH (2002)....Keatite, coesite,...

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The various forms of crystalline silica are: α-quartz, β-quartz, α-tridymite, β-tridymite, α-cristobalite, β-cristobalite, keatite, coesite, stishovite, and moganite. NIOSH (2002)....Keatite, coesite, stishovite, and moganite are rarely found in nature. The most commonly occurring polymorphs are quartz, cristobalite and tridymite, which are found in rocks and soil. 

NIOSH Hazard Review: Health Effects of Occupational Exposure to Respirable Crystalline Silica (DHHS (NIOSH) Publication No. 2002–129). Cincinnati, OH, 145 pp.

From https://www.ncbi.nlm.nih.gov/books/NBK304370/#

Group I Human
Group II and II* Human
Ecotox
Fate
Physical
Mult
Non-GSLT
C
M
R
D
E
AT
ST
ST
N
N
SnS
SnR
IrS
IrE
AA
CA
ATB
P
B
Rx
F
PBT
GW
O
All Hazards
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Hazard Lists (2 endpoints)

Endpoint Hazard Level GS Score List Name Hazard Description Other Lists
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Restricted Substance Lists (1)

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