CHEMICAL AND PHYSICAL PROPERTIES
| Physical Description | P-toluidine is a colorless solid. Melting point 44 °C (111 °F). Specific gravity 1.046. Vapor heavier than air. Produces toxic oxides of nitrogen during combustion. May be absorbed through the skin. Used in dyes, and in organic chemical manufacturing. |
|---|---|
| Color/Form | Lustrous plates or leaflets |
| Odor | Aromatic, wine-like odor |
| Taste | Burning taste |
| Boiling Point | 393 °F at 760 mmHg (USCG, 1999) |
| Melting Point | 112.1 °F (USCG, 1999) |
| Flash Point | 188 °F (USCG, 1999) |
| Solubility | 0.7 % (NIOSH, 2023) |
| Density | 1 at 68 °F (USCG, 1999) |
| Vapor Density | 3.90 (Air = 1) |
| Vapor Pressure | 1 mmHg at 108 °F (NIOSH, 2023) |
| LogP | log Kow = 1.39 |
| Henry's Law Constant | Henry's Law constant = 2.02X10-6 atm-cu m/mol at 25 °C |
| Autoignition Temperature | 899 °F (USCG, 1999) |
| Decomposition | When heated to decomposition it emits highly toxic fumes of /nitroxides/. |
| Heat of Vaporization | 44.3 kJ/mol at 200.4 °C |
| Ionization Potential | 7.50 eV |
| Ionization Efficiency | Positive |
| Odor Threshold | Odor Threshold Low: 0.02 [mmHg] Odor Threshold High: 3.2 [mmHg] Odor threshold from AIHA |
| Refractive Index | Index of refraction: 1.5534 at 45 °C/D |
| Dissociation Constants | pKa = 5.10 at 25 °C (conjugate acid) |
| Kovats Retention Index | 1042.1 1068 1092 1092 1055.3 1056.5 1037 |
| Other Experimental Properties | Heat of fusion: 18.9 kJ/mol at 43.6 °C |
| Chemical Classes | Nitrogen Compounds -> Amines, Aromatic |
COMPUTED DESCRIPTORS
| Molecular Weight | 107.15 g/mol |
|---|---|
| XLogP3 | 1.4 |
| Hydrogen Bond Donor Count | 1 |
| Hydrogen Bond Acceptor Count | 1 |
| Rotatable Bond Count | 0 |
| Exact Mass | 107.073499291 g/mol |
| Monoisotopic Mass | 107.073499291 g/mol |
| Topological Polar Surface Area | 26 Ų |
| Heavy Atom Count | 8 |
| Formal Charge | 0 |
| Complexity | 62.8 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 0 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| Covalently-Bonded Unit Count | 1 |
| Compound Is Canonicalized | Yes |
PRODUCT INTRODUCTION
description
P-toluidine is a colorless solid. Melting point 44 °C (111 °F). Specific gravity 1.046. Vapor heavier than air. Produces toxic oxides of nitrogen during combustion. May be absorbed through the skin. Used in dyes, and in organic chemical manufacturing.