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Nitrobenzene

Synonyms & Trade Names
Essence of mirbane, Nitrobenzol, Oil of mirbane
CAS No.
98-95-3
RTECS No.
DA6475000
DOT ID & Guide
1662 152
Formula
C6H5NO2
Conversion
1 ppm = 5.04 mg/m3
IDLH
200 ppm
See: 98953
Exposure Limits
NIOSH REL
TWA 1 ppm (5 mg/m3) [skin]
OSHA PEL
TWA 1 ppm (5 mg/m3) [skin]
Measurement Methods
NIOSH 2005 , 2017
See: NMAM or OSHA Methods
Physical Description
Yellow, oily liquid with a pungent odor like paste shoe polish. [Note: A solid below 42°F.]
Molecular Weight
123.1
Boiling Point
411°F
Freezing Point
42°F
Solubility
0.2%
Vapor Pressure
(77°F): 0.3 mmHg
Ionization Potential
9.92 eV
Specific Gravity
1.20
Flash Point
190°F
Upper Exposive Limit
?
Lower Explosive Limit
(200°F): 1.8%
Class IIIA Combustible Liquid: Fl.P. at or above 140°F and below 200°F.
Incompatibilities & Reactivities
Concentrated nitric acid, nitrogen tetroxide, caustics, phosphorus pentachloride, chemically-active metals such as tin or zinc
Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
irritation eyes, skin; anoxia; dermatitis; anemia; methemoglobinemia; In Animals: liver, kidney damage; testicular effects
Target Organs
Eyes, skin, blood, liver, kidneys, cardiovascular system, reproductive system
Personal Protection/Sanitation
(See protection codes)
Skin:Prevent skin contact
Eyes:Prevent eye contact
Wash skin:No recommendation
Remove:When wet or contaminated
Change:Daily
Provide:Quick drench
First Aid
(See procedures)
Eye:Irrigate immediately
Skin:Soap wash immediately
Breathing:Respiratory support
Swallow:Medical attention immediately
Respirator Recommendations

NIOSH/OSHA

Up to 10 ppm:
(APF = 10) Any chemical cartridge respirator with organic vapor cartridge(s)*
(APF = 10) Any supplied-air respirator*

Up to 25 ppm:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode*
(APF = 25) Any powered, air-purifying respirator with organic vapor cartridge(s)*

Up to 50 ppm:
(APF = 50) Any chemical cartridge respirator with a full facepiece and organic vapor cartridge(s)
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister
(APF = 50) Any powered, air-purifying respirator with a tight-fitting facepiece and organic vapor cartridge(s)*
(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
Any appropriate escape-type, self-contained breathing apparatus

Important additional information about respirator selection

See also
INTRODUCTION   ICSC CARD: 0065   MEDICAL TESTS: 0161
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