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72
Magnesite
546-93-0
Magnesium carbona
te TWA=15 mg/m
3
(OSHA)
TWA= 5 mg/m
3
(OSHA, respirable
fraction)
N95
Magnesium
oxide fume
1309-48-4
Magnesia fume TW
A=10 mg/m
3
(inhalable fraction)
N95
Maleic anhydride
108-31-6
2,5-F
urandione, cis-
B
utenedioic anhy
dride,
Maleic acid anhydride
14000 TWA=0.01 mg/m
3
(Inhalable fraction
and vapor)
(F)OV/N95
Manganese
cyclopentadienyl
tricarbonyl
12079-65-1
MCT TW
A=0
.
1 mg/m
3
-skin-
SA Properties
of vapor
unknown
Manganese,
elemental and inorganic
compounds (
as Mn
)
7
439-96-5
TWA=0.1 mg/m
3
(inhalable fraction)
TWA=0.02 mg/m
3
(respirable fraction)
C= 5 mg/m
3
(OSHA)
N95
Melamine
108-78-1
1,3,5-
Triazine-
2,4,6-
triamine;
2,4,6-Triamino-1,3,5-triazine;
Cyanuramide
TWA=3 mg/m
3
(AIHA, inhalable
fraction and vapor)
N95
See comment D
on page 8
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