CHEMICAL AND PHYSICAL PROPERTIES
| Physical Description | Piperidine appears as a clear colorless liquid with a pepper-like odor. Less dense than water, but miscible in water. Will float on water. Flash point 37 °F. Melting point -15.8 °F (-9 °C). Boiling point 222.8 °F (106 °C). May severely irritate skin and eyes. May be toxic by ingestion and inhalation. Vapors heavier than air. Used to make rubber and as a solvent. |
|---|---|
| Color/Form | CLEAR, COLORLESS LIQUID |
| Odor | AMINE-LIKE ODOR |
| Taste | BURNING PEPPERY TASTE |
| Boiling Point | 223 °F at 760 mmHg (EPA, 1998) |
| Melting Point | 16 to 19 °F (EPA, 1998) |
| Flash Point | 37.4 to 61 °F (EPA, 1998) |
| Solubility | Miscible (NTP, 1992) |
| Density | 0.8622 at 68 °F (EPA, 1998) - Less dense than water; will float |
| Vapor Density | 3 (EPA, 1998) - Heavier than air; will sink (Relative to Air) |
| Vapor Pressure | 40 mmHg at 84.56 °F (EPA, 1998) |
| LogP | log Kow = 0.84 |
| Henry's Law Constant | Henry's Law constant = 4.45X10-6 atm-cu m/mol at 25 °C |
| Decomposition | ... When heated to decomposition, it emits highly toxic fumes of oxides of /nitrogen oxides/. ... . |
| Heat of Combustion | 3453.2 kJ/mol (liquid) at 25 °C |
| pH | Strong base |
| Odor Threshold | Odor threshold <2 ppm by volume |
| Refractive Index | Index of refraction: 1.4534 at 20 degC/D |
| Dissociation Constants | 11.12 |
| Kovats Retention Index | 775 769 771 764 775 790 742 751 761 767 750 755 755 782 790 790 |
| Other Experimental Properties | Soapy feel; solidifies at -13 °C to -17 °C. Forms complexes with salts of heavy metals |
| Chemical Classes | Nitrogen Compounds -> Amines, Cyclic |
SAFETY INFORMATION
| Signal word | Danger |
|---|---|
| Pictogram(s) |
 Flame Flammables GHS02  Corrosion Corrosives GHS05  Skull and Crossbones Acute Toxicity GHS06 |
| GHS Hazard Statements |
H225:Flammable liquids H302:Acute toxicity,oral H314:Skin corrosion/irritation |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P280:Wear protective gloves/protective clothing/eye protection/face protection. P301+P312:IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
COMPUTED DESCRIPTORS
| Molecular Weight | 85.15 g/mol |
|---|---|
| XLogP3 | 0.8 |
| Hydrogen Bond Donor Count | 1 |
| Hydrogen Bond Acceptor Count | 1 |
| Rotatable Bond Count | 0 |
| Exact Mass | 85.089149355 g/mol |
| Monoisotopic Mass | 85.089149355 g/mol |
| Topological Polar Surface Area | 12 Ų |
| Heavy Atom Count | 6 |
| Formal Charge | 0 |
| Complexity | 30.9 |
| 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
Piperidine appears as a clear colorless liquid with a pepper-like odor. Less dense than water, but miscible in water. Will float on water. Flash point 37 °F. Melting point -15.8 °F (-9 °C). Boiling point 222.8 °F (106 °C). May severely irritate skin and eyes. May be toxic by ingestion and inhalation. Vapors heavier than air. Used to make rubber and as a solvent.