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NOTE:
See important warnings, definitions, and explanation of column headings and abbreviations starting on page 1.
121
Chemical Name
CAS # Synonym
IDLH
(ppm)
OEL
(ppm)
R
e
spirator
(
Exposures < both
A
PF x OEL and IDLH)
C
omments
Wood dust
(Western red cedar)
TWA=0.5 mg/m
3
(inhalable fraction)
N95
Xylene
(o-, m-, p- isomers)
1330-20-7
95-47-6
108-38-3
106-42-3
Dimethylbenzene
(o-, m-, p-isomers),
1,2-Dimethylbenzene,
1,3-Dimethylbenzene,
1,4-Dimethylbenzene
1000 TWA=100
STEL=150
OV 3M 3510 Monitor
m-Xylene
a,a’-diamine
1477-55-0
MXDA C=0.1 mg/m
3
-skin-
OV/N95
See comment D on
page 8
Xylidine
1300-73-8
Aminodimethyl benzene,
Aminoxylene dimethyl aniline,
Dimethylaminobenzene
150 TWA=0.5 (inhalable
fraction and vapor)
-skin-
OV/N95
See comment E on
page 8
Yttrium, metal and
compounds (as Y)
7440-65-5
TWA=1 mg/m
3
N95
Zinc chloride fume
7646-85-7
4800 mg/m
3
TWA=1 mg/m
3
STEL=2 mg/m
3
N95
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