APPENDIX E
THRESHOLD LIMIT VALUES FOR SELECTED SUBSTANCES, 1990-1991
TWA
.
STEL
.
3
3
Substance
ppm
mg/m
ppm
mg/m
Acetic acid
10
25
15
37
Ammonia
25
18
35
27
Cadmium oxide
--
(C 0.05)
--
--
fume (as Cd)
Carbon disulfide
10
31
--
--
(Skin)
Carbon monoxide
50
55
400
440
Chlorine
0.5
1.5
1
2.9
Copper fume
--
0.2
--
--
Diazinon (Skin)
--
0.1
--
--
Diethyl ether
400
1200
500
1500
Formaldehyde
(1,A2)
(1.2A2)
(2,A2)
(2.5,A2)
Nitrogen dioxide
3
5.6
5
9.4
Ozone
C 0.l
C 0.2
0.3
0.6
Phosgene
0.10
0.4
--
--
Perchloroethylene
50
339
200
1357
Stoddard solvent
100
525
--
--
Trichloroethylene
50
269
200
1070
NOTE:
Threshold limit values (TLVs) are subject to change annually. Check
latest edition of TLV booklet. Time weighted average (TWA).
END OF APPENDIX E
MD0165
E-1
Previous Page
