DIPHENYLAMINE†

Chemical Identification
Chemical Identification
CAS # 122-39-4
Formula

C₁₂H₁₁N

Synonyms

anilinobenzene; DPA; phenylaniline; N-phenylaniline; N-phenylbenzenamine

Physical Properties
Physical Properties
Physical description Colorless, tan, amber, or brown crystalline solid with a pleasant, floral odor.
Boiling point 576°F Molecular weight 169.2
Freezing point/melting point 127°F Vapor pressure 1 mmHg at 227°F
Flash point 307°F Vapor density 5.82
Specific gravity 1.16 Ionization potential 7.40 eV
Lower explosive limit (LEL) Upper explosive limit (UEL)
NFPA health rating 2 NFPA fire rating 1
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.) 0926
Sampling group
Sampler/Sampling media 2 GFFs (37 mm) coated with sulfuric acid, in 3-piece cassette, separated by the ring section [SKC 225-9004]
Sampling time*
Sampling volume (TWA)*

100 L

Sampling flow rate (TWA)*

1 L/min

Sampling volume (STEL/Peak/C)*
Sampling flow rate (STEL/Peak/C)*
Analytical method instruments HPLC-UV
Method reference OSHA 78 (fully validated)
Notes

Keep samples refrigerated when not in transit. Ship samples overnight with cold-packs as soon as possible.

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

10 mg/m³ (Construction and Maritime only)

REL-TWA

10 mg/m³

TLV-TWA

10 mg/m³ [1990]

PEL-TWA

10 mg/m³

PEL-STEL REL-STEL TLV-STEL PEL-STEL
PEL-C REL-C TLV-C PEL-C
Skin notation

N

Skin notation

N

Skin notation

N

Skin notation

N

Notes:

There is no PEL established for General Industry 29 CFR 1910. See 29 CFR 1926.55 Appendix A and 29 CFR 1915.1000 Table Z-Shipyards.

Notes: Notes: Notes:
Health factors:  See NIH-NLM PubChem. IDLH
Carcinogenic classifications: 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 - Diphenylamine

NIOSH: Pocket Guide to Chemical Hazards - Diphenylamine

Literature References

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

Last Updated Date : 12/28/2020