1. OSHA Occupational Chemical Database
  2. N,N-DIMETHYLANILINE
Label abbreviations descriptions

N,N-DIMETHYLANILINE†

Chemical Identification
Chemical Identification
CAS # 121-69-7
Formula
 

C₈H₁₁N
Synonyms
 

N,N-dimethylbenzeneamine; N,N-dimethylphenylamine [Note: Also known as dimethylaniline which is a correct synonym for xylidine.]
Physical Properties
Physical Properties
Physical description Pale yellow, oily liquid with an amine-like odor.
Boiling point 378°F Molecular weight 121.2
Freezing point/melting point 36°F Vapor pressure 1 mmHg
Flash point 142°F Vapor density 4.17
Specific gravity 0.96 Ionization potential 7.14 eV
Lower explosive limit (LEL) Upper explosive limit (UEL)
NFPA health rating 3 NFPA fire rating 2
NFPA reactivity rating 0 NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs
Monitoring Methods Used by OSHA
Monitoring Methods Used by OSHA
Analyte code (IMIS no.) 0931
Sampling group
Sampler/Sampling media XAD-7 (80/40 mg sections, 20/60 mesh) coated with 10% phosphoric acid [SKC 226-98]
Sampling time*
 

150 min
Sampling volume (TWA)*
 

30 L
Sampling flow rate (TWA)*
 

0.2 L/min
Sampling volume (STEL/Peak/C)*
 

 
Sampling flow rate (STEL/Peak/C)*
 

 
Analytical method instruments GC-FID
Method reference OSHA PV2064 (partially validated)
Notes
 

 
Special requirements
 

 

* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.

Wipe Method
Wipe Method
Sampler/Sampling media
 

 
Bulk Method
Bulk Method
 

 
On-Site Screening Techniques
On-Site Screening Techniques
Device Detector tube Infrared spectrophotometer
Model/Type Gastec 181 Miran 1A & 1B
Sampling information
(see manufacturer instructions) 		2.5-45 ppm range 0.7 ppm@8.6 µm
Exposure Limits
Exposure Limits
OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
NIOSH REL
Up to 10-hour TWA
(ST) STEL
(C) Ceiling
ACGIH TLV©
8-hour TWA
(ST) STEL
(C) Ceiling
CAL/OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
PEL-TWA
 

5 ppm (25 mg/m³)

 REL-TWA
 

5 ppm (25 mg/m³)

 TLV-TWA
 

5 ppm [1990]

 PEL-TWA
 

5 ppm (25 mg/m³)
PEL-STEL
 

 

 REL-STEL
 

10 ppm (50 mg/m³)

 TLV-STEL
 

10 ppm [1990]

 PEL-STEL
 

10 ppm (50 mg/m³)
PEL-C
 

 

 REL-C
 

 

 TLV-C
 

 

 PEL-C
 

 
Skin notation
 

Y

 Skin notation
 

Y

 Skin notation
 

Y

 Skin notation
 

Y
Notes:
 

See 29 CFR 1910.1000 Table Z-1.

 Notes:
 

 

 Notes:
 

BEI®

 Notes:
 

 
Health factors:  See NIH-NLM PubChem. IDLH
 

100 ppm
Carcinogenic classifications: IARC-3, TLV-A4 Notes:
 

 
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
 

 
Additional Resources and Literature References
Additional Resources and Literature References

NOAA: CAMEO Chemicals - N,N-Dimethylaniline

NIOSH: Pocket Guide to Chemical Hazards - N,N-Dimethylaniline

Literature References

 
  • ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Dimethylaniline. See annual publication for most recent information.
  • Occupational Health Guidelines for Chemical Hazards. US Department of Health and Human Services (DHHS), National Institute for Occupational Safety and Health (NIOSH) Publication No. 81-123, (1981, January). Provides a table of contents of guidelines for many hazardous chemicals. The files provide technical chemical information, including chemical and physical properties, health effects, exposure limits, and recommendations for medical monitoring, personal protective equipment (PPE), and control procedures.

Last Updated Date : 01/05/2021