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

Vapor Pressure

1 mmHg

Ionization Potential

7.14 eV

Specific Gravity

0.96

Flash Point

142°F

Upper Explosive 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

N,N-Dimethylaniline

NIOSH REL

OSHA PEL

Follow NIOSH

NIOSH Homepage