4-Aminobiphenyl

4-Aminobiphenyl
Names
	Preferred IUPAC name [1,1′-Biphenyl]-4-amine
	Other names 4-Aminobiphenyl, xenylamine, 4-ABP; 4-Aminodiphenyl; p-Aminobiphenyl; p-Aminodiphenyl; 4-Phenylaniline
Identifiers
CAS Number	92-67-1 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:1784 ;
ChEMBL	ChEMBL44201 ;
ChemSpider	6835 ;
ECHA InfoCard	100.001.980
EC Number	202-177-1;
KEGG	C10998 ;
PubChem CID	7102;
RTECS number	DU8925000;
UNII	16054949HJ ;
UN number	3077
CompTox Dashboard (EPA)	DTXSID5020071 ;
	InChI InChI=1S/C12H11N/c13-12-8-6-11(7-9-12)10-4-2-1-3-5-10/h1-9H,13H2 Key: DMVOXQPQNTYEKQ-UHFFFAOYSA-N ; InChI=1/C12H11N/c13-12-8-6-11(7-9-12)10-4-2-1-3-5-10/h1-9H,13H2 Key: DMVOXQPQNTYEKQ-UHFFFAOYAX;
	SMILES c1ccccc1c2ccc(N)cc2;
Properties
Chemical formula	C12H11N
Molar mass	169.227 g·mol−1
Appearance	White solid
Odor	Floral
Density	1.16 g/cm3
Melting point	52 to 54 °C (126 to 129 °F; 325 to 327 K)
Boiling point	302 °C (576 °F; 575 K)
Solubility in water	Slightly soluble in cold water, soluble in hot water
Vapor pressure	20 mbar (191 °C)
Acidity (pKa)	4.35 (conjugate acid; 18 °C, H2O)
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	potential occupational carcinogen
NFPA 704 (fire diamond)	2 1 0
Flash point	147 °C (297 °F; 420 K)
Autoignition; temperature	450 °C (842 °F; 723 K)
	NIOSH (US health exposure limits):
REL (Recommended)	carcinogen
IDLH (Immediate danger)	N.D.
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

4-Aminobiphenyl (4-ABP) is an organic compound with the formula C₆H₅C₆H₄NH₂. It is an amine derivative of biphenyl. It is a colorless solid, although aged samples can appear colored. 4-Aminobiphenyl was commonly used in the past as a rubber antioxidant and an intermediate for dyes. Exposure to this aryl-amine can happen through contact with chemical dyes and from inhalation of cigarette smoke. Researches showed that 4-aminobiphenyl is responsible for bladder cancer in humans and dogs by damaging DNA. Due to its carcinogenic effects, commercial production of 4-aminobiphenyl ceased in the United States in the 1950s.