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o-Nitrotoluene

Synonyms & Trade Names
2-Methylnitrobenzene, o-Methylnitrobenzene, 2-Nitrotoluene, ortho-Nitrotoluene
CAS No.
88-72-2
RTECS No.
XT3150000
DOT ID & Guide
1664 152
Formula
NO₂C₆H₄CH₃
Conversion
1 ppm = 5.61 mg/m3
IDLH
200 ppm
See: 88722
Exposure Limits
NIOSH REL
TWA 2 ppm (11 mg/m3) [skin]
OSHA PEL
TWA 5 ppm (30 mg/m3) [skin] See Appendix G
Measurement Methods
NIOSH 2005
See: NMAM or OSHA Methods
Physical Description
Yellow liquid with a weak, aromatic odor. [Note: A solid below 25°F.]
Molecular Weight
137.1
Boiling Point
432°F
Freezing Point
25°F
Solubility
0.07%
Vapor Pressure
0.1 mmHg
Ionization Potential
9.43 eV
Specific Gravity
1.16
Flash Point
223°F
Upper Exposive Limit
?
Lower Explosive Limit
2.2%
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   ICSC CARD: 0931

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