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Xylidine

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Synonyms & Trade Names
Aminodimethylbenzene, Aminoxylene, Dimethylaminobenzene, Dimethylaniline [Xylidene], 2,4-Dimethylaniline, Xylidine isomers [Note: Dimethylaniline is also used as a synonym for N,N-Dimethylaniline.]
CAS No.
1300-73-8
RTECS No.
ZE8575000
DOT ID & Guide
1711 153
Formula
(CH₃)₂C₆H₃NH₂
Conversion
1 ppm = 4.96 mg/m3
IDLH
50 ppm
See: 1300738
Exposure Limits
NIOSH REL
TWA 2 ppm (10 mg/m3) [skin]
OSHA PEL
TWA 5 ppm (25 mg/m3) [skin] See Appendix G
Measurement Methods
NIOSH 2002
See: NMAM or OSHA Methods
Physical Description
Pale-yellow to brown liquid with a weak, aromatic, amine-like odor.
Molecular Weight
121.2
Boiling Point
415-439°F
Freezing Point
-33°F
Solubility
Slight
Vapor Pressure
<1 mmHg
Ionization Potential
7.65 eV (2,4-) 7.30 eV (2,6-)
Specific Gravity
0.98
Flash Point
206°F (2,3-)
Upper Explosive Limit
?
Lower Explosive Limit
1.0% (o-isomer)
Class IIIB Combustible Liquid: Fl.P. at or above 200°F. (2,3-)
Incompatibilities & Reactivities
Strong oxidizers, hypochlorite salts
Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
Anoxia, cyanosis, methemoglobinemia; lung, liver, kidney damage
Target Organs
respiratory system, blood, liver, kidneys, cardiovascular system
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
Provide:Eyewash, Quick drench
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 chemical cartridge respirator with organic vapor cartridge(s)
(APF = 10) Any supplied-air respirator

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

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: 0600   MEDICAL TESTS: 0244
Page last reviewed: October 30, 2019
Content source: National Institute for Occupational Safety and Health