1. OSHA Occupational Chemical Database
  2. XYLIDINE, ALL ISOMERS (DIMETHYLAMINOBENZENE)
Label abbreviations descriptions

XYLIDINE, ALL ISOMERS (DIMETHYLAMINOBENZENE)†

Chemical Identification
Chemical Identification
CAS # 1300-73-8
Formula

C₈H₁₁N
Synonyms

2,4-dimethylaniline; 2,4-dimethylaminobenzene; aminodimethylbenzene; 2,4-xylidine; 2,5-xylidine; (there are 6 isomers for xylidine)
Physical Properties
Physical Properties
Physical description Pale-yellow to brown liquid with a weak, aromatic, amine-like odor.
Boiling point 415-439°F Molecular weight 121.2
Freezing point/melting point -33°F Vapor pressure <1 mmHg
Flash point 206°F (2,3-) Vapor density
Specific gravity 0.98 Ionization potential 7.65eV (2,4-) 7.30eV (2,6-)
Lower explosive limit (LEL) 1% (o-isomer) Upper explosive limit (UEL)
NFPA health rating NFPA fire rating
NFPA reactivity rating 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.) 2600
Sampling group
Sampler/Sampling media Silica gel tube (150/75 mg) [SKC 226-10]
Sampling time*
Sampling volume (TWA)*

3-20 L
Sampling flow rate (TWA)*

0.02-0.2 L/min
Sampling volume (STEL/Peak/C)*
Sampling flow rate (STEL/Peak/C)*
Analytical method instruments GC-FID
Method reference NIOSH 2002 (fully 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
Model/Type
Sampling information
(see manufacturer instructions)
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

2 ppm (10 mg/m³)

 TLV-TWA

0.5 ppm (inhalable fraction and vapor) [1999]

 PEL-TWA

0.5 ppm (2.5 mg/m³)
PEL-STEL REL-STEL TLV-STEL PEL-STEL
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

50 ppm
Carcinogenic classifications: TLV-A3 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 - Xylidines

NIOSH: Pocket Guide to Chemical Hazards - Xylidine

Literature References

  • ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Xylidine (mixed isomers). See annual publication for most recent information.

Last Updated Date : 01/14/2021