Chemistry Reference
In-Depth Information
TABLE 7.1 (
Continued
)
Occupational Exposure Limits
Occupational Safety and
Health Administration
(OSHA 2006)
American Conference of Governmental
Industrial Hygienists (ACGIH 2009)
National Institute for Occupational
Safety and Health (NIOSH 2005)
Chemical
Abstracts
Service Registry
Number
(CASRN)
Threshold Limit
Values-Time Weighted
Average (TLV-TWA)
Recommended
Exposure Limits
(RELs)
Chemical
Name
Permissible Exposure
Limits (PELs)
Critical Effects
Target Organs
Silver
7440-22-4
0.01 mg/m
3
(soluble
compounds, as Ag)
0.1 mg/m
3
(metal)
Argyria
0.01 mg/m
3
Nasal septum, skin,
eyes
0.01 mg/m
3
Tantalum
7440-25-7
5 mg/m
3
Upper respiratory tract
irritation
5 mg/m
3
Eyes, skin,
respiratory system
5 mg/m
3
Thallium and
soluble
compounds
7440-28-0
0.1 mg/m
3
Alopecia
0.1 mg/m
3
—
0.1 mg/m
3
Tin
7440-31-5
2 mg/m
3
(oxide and
inorganic compounds,
except tin hydride)
2 mg/m
3
(metal)
0.1 mg/m
3
(organic
compounds)
STEL = 0.2 mg/m
3
(organic compounds)
Pneumoconiosis; eye
and upper respiratory
tract irritation;
headache; nausea
(oxide and inorganic
compounds, except tin
hydride)
2 mg/m
3
(inorganic)
0.1 mg/m
3
(organic)
Eyes, skin,
respiratory system
2 mg/m
3
(inorganic)
0.1 mg/m
3
(organic)
