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N,N-Dimethylaniline

Synonyms & Trade Names
Dimethylaniline [N,N-Dimethylaniline], N,N-Dimethylbenzeneamine, N,N-Dimethylphenylamine [Note: Also known as Dimethylaniline which is a correct synonym for Xylidine.]
CAS No.
121-69-7
RTECS No.
BX4725000
DOT ID & Guide
2253 153
Formula
C₆H₅N(CH₃)₂
Conversion
1 ppm = 4.96 mg/m3
IDLH
100 ppm
See: 121697
Exposure Limits
NIOSH REL
TWA 5 ppm (25 mg/m3) ST 10 ppm (50 mg/m3) [skin]
OSHA PEL
TWA 5 ppm (25 mg/m3) [skin] See Appendix G
Measurement Methods
NIOSH 2002;
OSHA PV2064
See: NMAM or OSHA Methods
Physical Description
Pale yellow, oily liquid with an amine-like odor. [Note: A solid below 36°F.]
Molecular Weight
121.2
Boiling Point
378°F
Freezing Point
36°F
Solubility
2%
Vapor Pressure
1 mmHg
Ionization Potential
7.14 eV
Specific Gravity
0.96
Flash Point
142°F
Upper Exposive Limit
?
Lower Explosive Limit
?
Class IIIA Combustible Liquid: Fl.P. at or above 140°F and below 200°F.
Incompatibilities & Reactivities
Strong oxidizers, strong acids, benzoyl peroxide
Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
Anoxia symptoms: cyanosis, lassitude (weakness, exhaustion), dizziness, ataxia; methemoglobinemia
Target Organs
Blood, kidneys, liver, 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: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 50 ppm:
(APF = 10) Any supplied-air respirator

Up to 100 ppm:
(APF = 25) Any supplied-air respirator 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

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: 0877   MEDICAL TESTS: 0085

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