Chemistry Reference
In-Depth Information
Tungsten
7440-33-7
5 mg/m
3
(metal and
insoluble compounds)
1 mg/m
3
(soluble
compounds)
STEL = 10 mg/m
3
(metal and insoluble
compounds)
STEL = 3 mg/m
3
(soluble compounds)
Lower respiratory tract
irritation (metal and
insoluble compounds)
Central nervous system
impairment; pulmonary
fibrosis (soluble
compounds)
—
—
—
Yttrium
7440-65-5
1 mg/m
3
Pulmonary fibrosis
1 mg/m
3
Eyes, respiratory
system, liver
1 mg/m
3
