4-Nitrophenol

4-Nitrophenol
Names
	Preferred IUPAC name 4-Nitrophenol
	Other names p-Nitrophenol; para-Nitrophenol; 4-Hydroxynitrobenzene; PNP;
Identifiers
CAS Number	100-02-7 ;
3D model (JSmol)	Interactive image; Interactive image;
ChEBI	CHEBI:16836 ;
ChEMBL	ChEMBL14130 ;
ChemSpider	955 ;
DrugBank	DB04417 ;
ECHA InfoCard	100.002.556
KEGG	C00870 ;
PubChem CID	980;
UNII	Y92ZL45L4R ;
CompTox Dashboard (EPA)	DTXSID0021834 ;
	InChI InChI=1S/C6H5NO3/c8-6-3-1-5(2-4-6)7(9)10/h1-4,8H Key: BTJIUGUIPKRLHP-UHFFFAOYSA-N ; InChI=1/C6H5NO3/c8-6-3-1-5(2-4-6)7(9)10/h1-4,8H Key: BTJIUGUIPKRLHP-UHFFFAOYAP;
	SMILES O=[N+]([O-])c1ccc(O)cc1; c1cc(ccc1[N+](=O)[O-])O;
Properties
Chemical formula	C6H5NO3
Molar mass	139.110 g·mol−1
Appearance	Colourless to pale yellow crystals
Density	1.48 g/cm3 (20 °C (68 °F; 293 K))
Melting point	110 to 115 °C (230 to 239 °F; 383 to 388 K)
Boiling point	279 °C (534 °F; 552 K)
Solubility in water	10 g/L (15 °C (59 °F; 288 K)); 11.6 g/L (20 °C (68 °F; 293 K)); 16 g/L (25 °C (77 °F; 298 K));
log P	1.95
Vapor pressure	0.6 mmHg (0.080 kPa) (120 °C (248 °F; 393 K))
Acidity (pKa)	7.15
Magnetic susceptibility (χ)	−69.5×10−6 cm3/mol
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H302+H312+H332, H373, H402
Precautionary statements	P260, P264, P270, P271, P273, P280, P301+P312+P330, P302+P352+P312, P304+P340+P312, P314, P363, P501
NFPA 704 (fire diamond)	3 1 1
Flash point	169 °C (336 °F; 442 K)
Autoignition; temperature	510 °C (950 °F; 783 K)
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	202 mg/kg (oral, rat); 1024 mg/kg (dermal, rat);
LC50 (median concentration)	4.7 mg/L (inhalation, rat - 4h - dust / mist)
	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-Nitrophenol (also called p-nitrophenol or 4-hydroxynitrobenzene) is a phenolic compound that has a nitro group at the opposite position of the hydroxyl group on the benzene ring.