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4-Aminobiphenyl structural formula V.1.svg
Preferred IUPAC name
Other names
3D model (JSmol)
ECHA InfoCard 100.001.980
Molar mass 169.22
Appearance white to purple crystals
Odor floral[1]
Density 1,16 g·cm−3[2]
Melting point 52 to 54 °C (126 to 129 °F; 325 to 327 K)[2]
Boiling point 302 °C (576 °F; 575 K)[2]
practically insoluble in water,[2] soluble in alcohol, ether and chloroform
Vapor pressure 20 mbar (191 °C)[2]
Main hazards potential occupational carcinogen[1]
NFPA 704
Flammability code 1: Must be pre-heated before ignition can occur. Flash point over 93 °C (200 °F). E.g., canola oil Health code 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g., chloroform Reactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g., liquid nitrogen Special hazards (white): no codeNFPA 704 four-colored diamond
Flash point 147 °C (297 °F; 420 K)
450 °C (842 °F; 723 K)
US health exposure limits (NIOSH):
REL (Recommended)
IDLH (Immediate danger)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

4-Aminobiphenyl is an amine derivative of biphenyl. It is used to manufacture azo dyes. It is a known human carcinogen[3] and so it has been largely replaced by less toxic compounds. It is similar to benzidine.

4-Aminobiphenyl is a constituent of tobacco smoke.[4]

Occupational exposure limits[edit]

Country Standard[5]
Argentina Confirmed human carcinogen
Australia Prohibited, Carcinogen
Belgium Skin
Bulgaria Confirmed human carcinogen
Colombia Confirmed human carcinogen
Finland TWA 10 mg/m3short term 20 mg/m3

Skin, Carcinogen

France VME 0.001 ppm (0.007 mg/m3)

Continuous1 Carcinogen

Hungary Ceiling concentration 10 mg/m3Carcinogen
Jordan Confirmed human carcinogen
New Zealand Carcinogen, Skin
Norway TWA 0.1 mg/m3
Singapore Confirmed human carcinogen
South Korea Carcinogen, Skin
Sweden Group A Carcinogen
Vietnam Confirmed human carcinogen


  1. ^ a b c d e f g h "NIOSH Pocket Guide to Chemical Hazards #0025". National Institute for Occupational Safety and Health (NIOSH). 
  2. ^ a b c d e Record of CAS RN 92-67-1 in the GESTIS Substance Database of the Institute for Occupational Safety and Health, accessed on 8. April 2009
  3. ^ National Toxicology Program
  4. ^ Talhout, Reinskje; Schulz, Thomas; Florek, Ewa; Van Benthem, Jan; Wester, Piet; Opperhuizen, Antoon (2011). "Hazardous Compounds in Tobacco Smoke". International Journal of Environmental Research and Public Health. 8 (12): 613–628. ISSN 1660-4601. PMC 3084482Freely accessible. PMID 21556207. doi:10.3390/ijerph8020613. 
  5. ^ "4-Aminodiphenyl". RTECS. National Institute for Occupational Safety and Health (NIOSH).