NAME: Silica, Crystalline Tridymite, Respirable Dust
SYNONYM(s):
Tridymite prior to 9/1/89
IMIS: 9017
CAS: 15468-32-3
Exposure Limits
OSHA GENERAL INDUSTRY PEL:
see 1910.1000 Table Z-3
ACGIH TLV:
0.05 mg/m3 TWA; (Respirable fraction)
NIOSH REL:
0.05 mg/m3 TWA; Potential carcinogen
Health Factors
IARC:
Silica - Group 2A, probably carcinogenic to humans (Crystalline +
Silica)
Monitoring
PRIMARY SAMPLING/ANALYTICAL METHOD (SLC1):
See Silica, Crystalline Quartz, Respirable dust (IMIS 9010)
NOTE:
Recognized reference material not available, analysis not performed at SLTC. Occurance of Tridymite extremely rare. Submit respirable sample to SLTC for quartz &/or cristobalite analysis.
WIPE:
No
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