4-Nitroaniline

C6H6N2O2, 138.126 g/mol. Its structure, the values that were measured, the values that were calculated, and where each one came from.

Organic — aromatic amine7 measured properties

Drawn from the SMILES. It shows how the atoms are connected — not a photograph of a molecule, and not its shape in space.

Identifiers

Molecular formula: C₆H₆N₂O₂
Molecular weight: 138.126 g/mol
Exact mass: 138.042927 g/mol
SMILES: Nc1ccc([N+](=O)[O-])cc1
InChI: InChI=1S/C6H6N2O2/c7-5-1-3-6(4-2-5)8(9)10/h1-4H,7H2
InChIKey: TYMLOMAKGOJONV-UHFFFAOYSA-N

Open in ReactionLens Use in reaction prediction

Both are open without an account.

Measured properties

Values somebody obtained from a sample and published. Where two sources report the same property they are both shown, in the units each used — a disagreement between them is information, and averaging it away would be inventing a number neither one gave.

Boiling Point: 637 °F at 760 mmHg (NTP, 1992)measured · National Toxicology Program, Institute of Environmental Health Sciences, National Institutes of Health (NTP). 1992. National Toxicology Program Chemical Repository Database. Research Triangle Park, North Carolina.; 332 °C (calculated)measured · O'Neil, M.J. (ed.). The Merck Index - An Encyclopedia of Chemicals, Drugs, and Biologicals. Whitehouse Station, NJ: Merck and Co., Inc., 2006., p. 1139; 332 °Cmeasured · reference compound database; 630 °Fmeasured · reference compound database; 332 °C @760 [mm Hg]measured · reference compound database; 630 °Fmeasured · reference compound database
Melting Point: 298 °F (NTP, 1992)measured · National Toxicology Program, Institute of Environmental Health Sciences, National Institutes of Health (NTP). 1992. National Toxicology Program Chemical Repository Database. Research Triangle Park, North Carolina.; 146 °Cmeasured · O'Neil, M.J. (ed.). The Merck Index - An Encyclopedia of Chemicals, Drugs, and Biologicals. Whitehouse Station, NJ: Merck and Co., Inc., 2006., p. 1139; Heat of fusion at melting point = 21.2 kJ/molmeasured · Lide, D.R. CRC Handbook of Chemistry and Physics 86TH Edition 2005-2006. CRC Press, Taylor & Francis, Boca Raton, FL 2005, p. 6-114; 148 °Cmeasured · reference compound database; 295 °Fmeasured · reference compound database; 147.5 °Cmeasured · reference compound database; 295 °Fmeasured · reference compound database
Flash Point: 390 °F (NTP, 1992)measured · National Toxicology Program, Institute of Environmental Health Sciences, National Institutes of Health (NTP). 1992. National Toxicology Program Chemical Repository Database. Research Triangle Park, North Carolina.; 199 °Cmeasured · reference compound database; 329 °F (OPEN CUP) (MOLTEN SOLID)measured · U.S. Coast Guard, Department of Transportation. CHRIS - Hazardous Chemical Data. Volume II. Washington, D.C.: U.S. Government Printing Office, 1984-5.; 199 °C (closed cup)measured · Mackison, F. W., R. S. Stricoff, and L. J. Partridge, Jr. (eds.). NIOSH/OSHA - Occupational Health Guidelines for Chemical Hazards. DHHS(NIOSH) Publication No. 81-123 (3 VOLS). Washington, DC: U.S. Government Printing Office, Jan. 1981., p. 2; 199 °Cmeasured · reference compound database; 390 °Fmeasured · reference compound database; 390 °Fmeasured · reference compound database
Solubility: less than 0.1 mg/mL at 70 °F (NTP, 1992)measured · National Toxicology Program, Institute of Environmental Health Sciences, National Institutes of Health (NTP). 1992. National Toxicology Program Chemical Repository Database. Research Triangle Park, North Carolina.; Very soluble in methanol; soluble in ethanol, ether, acetone, chloroform, toluene; slightly soluble in benzene, deuterated DMSOmeasured · Lide, D.R., G.W.A. Milne (eds.). Handbook of Data on Organic Compounds. Volume I. 3rd ed. CRC Press, Inc. Boca Raton ,FL. 1994., p. V1: 551; 1 g/45 mL boiling water; 1 g/25 mL alcohol; 1 g/30 mL ethermeasured · O'Neil, M.J. (ed.). The Merck Index - An Encyclopedia of Chemicals, Drugs, and Biologicals. Whitehouse Station, NJ: Merck and Co., Inc., 2006., p. 1139; 0.08 g/100 g water at 18.5 °C.measured · Mackison, F. W., R. S. Stricoff, and L. J. Partridge, Jr. (eds.). NIOSH/OSHA - Occupational Health Guidelines for Chemical Hazards. DHHS(NIOSH) Publication No. 81-123 (3 VOLS). Washington, DC: U.S. Government Printing Office, Jan. 1981., p. 2; In water, 390 ppm at 20 °Cmeasured · Hashimoto Y et al; Chemosphere 11: 991-1003 (1982); For more Solubility (Complete) data for 4-NITROANILINE (7 total), please visit the HSDB record page.measured · reference compound database; Solubility in water, g/100ml at 18.5 °C: 0.08measured · reference compound database; 0.08%measured · reference compound database
Density: 1.44 at 68 °F (USCG, 1999) - Denser than water; will sinkmeasured · U.S. Coast Guard. 1999. Chemical Hazard Response Information System (CHRIS) - Hazardous Chemical Data. Commandant Instruction 16465.12C. Washington, D.C.: U.S. Government Printing Office.; 1.424 at 20 °C/4 °Cmeasured · Lide, D.R. CRC Handbook of Chemistry and Physics 86TH Edition 2005-2006. CRC Press, Taylor & Francis, Boca Raton, FL 2005, p. 3-388; 1.4 g/cm³measured · reference compound database; 1.42measured · reference compound database; 1.424 @ 20°Cmeasured · reference compound database; 1.42measured · reference compound database
Vapor Pressure: 0.0015 mmHg at 68 °F ; 0.007 mmHg at 86 °F (NTP, 1992)measured · National Toxicology Program, Institute of Environmental Health Sciences, National Institutes of Health (NTP). 1992. National Toxicology Program Chemical Repository Database. Research Triangle Park, North Carolina.; 0.0000032 [mmHg]measured · reference compound database; 3.2X10-6 mm Hg at 25 °Cmeasured · Ferro D, Piacente V; Thermochim Acta 90: 387-9 (1985); Vapor pressure, Pa at 20 °C: 0.2measured · reference compound database; 0.00002 mmHgmeasured · reference compound database; 0.00002 mmHgmeasured · reference compound database
LogP: log Kow = 1.39measured · Hansch, C., Leo, A., D. Hoekman. Exploring QSAR - Hydrophobic, Electronic, and Steric Constants. Washington, DC: American Chemical Society., 1995., p. 19; 2.66measured · reference compound database; 1.46measured · reference compound database

Calculated properties

Derived from the structure rather than from a sample. These are reproducible and they are not measurements: a calculated partition coefficient and a measured one can differ by a long way, and where both exist they are listed apart on purpose.

logP: 1.177calculated · chemistry engine; Estimated preference for oil over water. Higher means more oil-like.
Topological polar surface area: 69.16 Å²calculated · chemistry engine; Surface area from polar atoms; relates to how easily a molecule crosses membranes.
H-bond donors: 1calculated · chemistry engine; Atoms that can donate a hydrogen bond.
H-bond acceptors: 3calculated · chemistry engine; Atoms that can accept a hydrogen bond.
Rotatable bonds: 1calculated · chemistry engine; Single bonds the molecule can freely twist around.
Molar refractivity: 37.5088 cm³/molcalculated · chemistry engine; Relates to the molecule's polarisability.
Fraction sp³ carbons: 0calculated · chemistry engine; Share of carbon atoms with tetrahedral bonding.
QED drug-likeness: 0.3595calculated · chemistry engine; Quantitative estimate of drug-likeness (0–1).

What it is made of

Elements

C Carbon6 atoms · 52.2% by mass
O Oxygen2 atoms · 23.2% by mass
N Nitrogen2 atoms · 20.3% by mass
H Hydrogen6 atoms · 4.4% by mass

Percentages are of the molecular weight above, worked out the same way the molar mass calculator does it.

Structure

Heavy atoms, hydrogen excluded: 10
Total atoms, hydrogen included: 16
Rings: 1
Aromatic rings: 1
Stereocentres: 0
Formal charge: 0

Functional groups

Primary aromatic amine
An –NH2 group attached directly to an aromatic ring, as in aniline. Much less basic than an alkyl amine, because the lone pair is delocalised into the ring.
Aromatic ring
A flat six-membered ring with delocalised electrons.

Matched by structural pattern, not by a measurement.

The molecule in three dimensions

Rotate and inspect the atoms. Loaded only when you ask, so the page stays light.

The drawing above is a diagram of what is bonded to what. A molecule is not flat, and the model here is one low-energy shape generated from the connectivity — useful for seeing which groups can reach each other, and not a measured structure. A real sample is a population of conformations, interconverting.

Reactions it appears in

No documented reaction with a written procedure and a source involves 4-Nitroaniline yet.

Other names for it

No systematic name is recorded.

The sources also call it p-Nitroaniline, 4-Nitrobenzenamine, p-Nitraniline, p-Aminonitrobenzene, p-Nitrophenylamine, 1-Amino-4-nitrobenzene, 4-Nitraniline, Benzenamine, 4-nitro-, Developer P, Aniline, 4-nitro-, Fast Red P Base, Aniline, p-nitro-.

Structurally related

Nothing structurally close to 4-Nitroaniline has a page here yet.

Seen alongside it in reaction records

Molecules that appear in the same recorded reactions as 4-Nitroaniline. This says nothing about structure: most of them are the bases, solvents, ligands and catalysts the chemistry needed, and they are here because somebody put them in the same flask.

1,2-Dichloroethane

used as a reactant

C₂H₄Cl₂, 98.96 g/mol.

1,1-Dichloroethane

used as a reactant

C₂H₄Cl₂, 98.96 g/mol.

Where these values came from

chemistry engine
structure perception

No matching record was found in the currently indexed sources (reference compound database)..

What this page does not claim

The identifiers are what the source record holds, copied rather than recomputed. Measured values are reported as their source gave them, units and all; calculated values are marked as calculated and are not measurements. Where a field is absent the page says so, because a blank cell reads as a zero and a guessed value reads as a fact.

Nothing here is a hazard assessment, a purity statement or advice about handling a sample. A flash point quoted from a safety database is a number somebody published, not a judgement by us about whether this molecule is safe for what you intend.