September 2010
NIOSH Publication Number 2010-168c

m-Nitrotoluene

Synonyms & Trade Names
m-Methylnitrobenzene, 3-Methylnitrobenzene, meta-Nitrotoluene, 3-Nitrotoluene
CAS No.
99-08-1
RTECS No.
XT2975000
DOT ID & Guide
1664 152
Formula
NO2C6H4CH3
Conversion
1 ppm = 5.61 mg/m3
IDLH
200 ppm
See: IDLH INDEX
Exposure Limits
NIOSH REL
: TWA 2 ppm (11 mg/m3) [skin]
OSHA PEL
†: TWA 5 ppm (30 mg/m3) [skin]
Measurement Methods

NIOSH 2005
Physical Description
Yellow liquid with a weak, aromatic odor. [Note: A solid below 59°F.]
MW:
137.1
BP:
450°F
FRZ:
59°F
Sol:
0.05%
VP:
0.1 mmHg
IP:
9.48 eV
Sp.Gr:
1.16
Fl.P:
223°F
UEL:
?
LEL:
1.6%
Class IIIB Combustible Liquid: Fl.P. at or above 200°F.
Incompatibilities & Reactivities
Strong oxidizers, sulfuric acid
Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
Anoxia, cyanosis; headache, lassitude (weakness, exhaustion), dizziness; ataxia; dyspnea (breathing difficulty); tachycardia; nausea, vomiting
Target Organs
Blood, central nervous system, cardiovascular system, skin, gastrointestinal tract
Personal Protection/Sanitation
(See protection codes)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated
Remove: When wet or contaminated
Change: No recommendation
First Aid
(See procedures)
Eye: Irrigate immediately
Skin: Soap wash immediately
Breathing: Respiratory support
Swallow: Medical attention immediately
Respirator Recommendations

NIOSH

Up to 20 ppm:
(APF = 10) Any supplied-air respirator*

Up to 50 ppm:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode*

Up to 100 ppm:
(APF = 50) Any supplied-air respirator that has a tight-fitting facepiece and is operated in a continuous-flow mode*
(APF = 50) Any self-contained breathing apparatus with a full facepiece
(APF = 50) Any supplied-air respirator with a full facepiece

Up to 200 ppm:
(APF = 2000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode

Emergency or planned entry into unknown concentrations or IDLH conditions:
(APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode
(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus

Escape:
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister having an N100, R100, or P100 filter.
Click here for information on selection of N, R, or P filters.
Any appropriate escape-type, self-contained breathing apparatus

Important additional information about respirator selection

See also: INTRODUCTION   See ICSC CARD: 1411