NAME: Tungsten (as W) Insoluble Compounds
IMIS: 2536
CAS: 7440-33-7
DESCRIPTION:
Solid.
Exposure Limits
OSHA CONSTRUCTION INDUSTRY PEL:
5 mg/m3 TWA
ACGIH TLV:
5 mg/m3 TWA; 10 mg/m3 STEL
NIOSH REL: 5 mg/m3 TWA; 10 mg/m3 STEL
Health Factors
HEALTH EFFECTS:
Apparent low toxicity/lung accumulation (HE19)
Monitoring
PRIMARY SAMPLING/ANALYTICAL METHOD (SLC1):
MEDIA:
Mixed Cellulose Ester Filter (MCEF) 0.8 microns
MAX V:
960 Liters MIN V:
480 Liters MAX F:
2.0 L/min (TWA)
MAX V:
30 Liters MAX FK: 2.0 L/min (STEL)
ANL 1:
Inductively Coupled Argon Plasma; ICP-AES
REF:
2 (OSHA ID-213)
SAE:
0.11
CLASS:
Fully Validated
NOTE:
Air sampling of cemented tungsten carbides and tungsten alloy matrices may contain cobalt; these should be sent to the lab to be analyzed for cobalt and tungsten by ID-213.
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