InChI=1/C5H5N/c1-2-4-6-5-3-1/h1-5H

Inherent Properties, Identifiers and References

ChemSpider ID:	1020
Empirical Formula:	C₅H₅N
Molecular Weight:	79.0999
Nominal Mass:	79 Da
Average Mass:	79.0999 Da
Monoisotopic Mass:	79.042199 Da

Systematic Name:

pyridine

SMILES:

n1ccccc1

InChI:

InChI=1/C5H5N/c1-2-4-6-5-3-1/h1-5H

InChIKey:

JUJWROOIHBZHMG-UHFFFAOYAY

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Wikipedia Article(s)

Pyridine is a chemical compound with the formula C₅ H₅ N. It is a liquid with a distinctively putrid, fish-like odour. Pyridine is a simple and fundamentally important heterocyclic aromatic organic compound. It is structurally related to benzene, wherein one CH group in the six-membered ring is replaced by a nitrogen atom. The pyridine ring occurs in many important compounds, including the nicotinamides. Pyridine is sometimes used as a ligand in coordination chemistry. As a ligand, it is usually abbreviated "py". Read more... or Edit at Wikipedia...

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Supplemental Information

Links & References

E. L. Willighagen, H. M. G. W. Denissen, R. Wehrens, and L. M. C. Buydens. On the Use of 1H and 13C 1D NMR Spectra as QSPR Descriptors, J. Chem. Inf. Model., 46 (2), 487-494, 2006

[PubMed: 16562976] [DOI: 10.1021/ci050282s]

User Data

experimental physchem properties

Melting Point: -42

The melting point of a crystalline solid is the temperature range at which it changes state from solid to liquid. See also: Melting Point

Melting Point: -42

The melting point of a crystalline solid is the temperature range at which it changes state from solid to liquid. See also: Melting Point

Melting Point: -42

The melting point of a crystalline solid is the temperature range at which it changes state from solid to liquid. See also: Melting Point

Melting Point: -42

The melting point of a crystalline solid is the temperature range at which it changes state from solid to liquid. See also: Melting Point

Melting Point: -42

The melting point of a crystalline solid is the temperature range at which it changes state from solid to liquid. See also: Melting Point

Melting Point: -42 C

The melting point of a crystalline solid is the temperature range at which it changes state from solid to liquid. See also: Melting Point

Boiling Point: 115

The boiling point of a liquid is the temperature at which the vapor pressure of the liquid equals the environmental pressure surrounding the liquid. See also: Boiling Point

Boiling Point: 115

The boiling point of a liquid is the temperature at which the vapor pressure of the liquid equals the environmental pressure surrounding the liquid. See also: Boiling Point

Boiling Point: 115

The boiling point of a liquid is the temperature at which the vapor pressure of the liquid equals the environmental pressure surrounding the liquid. See also: Boiling Point

Boiling Point: 115

The boiling point of a liquid is the temperature at which the vapor pressure of the liquid equals the environmental pressure surrounding the liquid. See also: Boiling Point

Boiling Point: 115

The boiling point of a liquid is the temperature at which the vapor pressure of the liquid equals the environmental pressure surrounding the liquid. See also: Boiling Point

Boiling Point: 240F

The boiling point of a liquid is the temperature at which the vapor pressure of the liquid equals the environmental pressure surrounding the liquid. See also: Boiling Point

Boiling Point: 115 C

The boiling point of a liquid is the temperature at which the vapor pressure of the liquid equals the environmental pressure surrounding the liquid. See also: Boiling Point

Flash Point: 20(68F)

The flash point of a flammable liquid is the lowest temperature at which it can form an ignitable mixture in air. See also: Flash Point

Flash Point: 20(68F)

The flash point of a flammable liquid is the lowest temperature at which it can form an ignitable mixture in air. See also: Flash Point

Flash Point: 20(68F)

The flash point of a flammable liquid is the lowest temperature at which it can form an ignitable mixture in air. See also: Flash Point

Flash Point: 20(68F)

The flash point of a flammable liquid is the lowest temperature at which it can form an ignitable mixture in air. See also: Flash Point

Flash Point: 20(68F)

The flash point of a flammable liquid is the lowest temperature at which it can form an ignitable mixture in air. See also: Flash Point

Flash Point: 68F

The flash point of a flammable liquid is the lowest temperature at which it can form an ignitable mixture in air. See also: Flash Point

Flash Point: 19 C (closed cup)

The flash point of a flammable liquid is the lowest temperature at which it can form an ignitable mixture in air. See also: Flash Point

Freezing Point: -44F

No description available

Specific Gravity: 0.978

Specific gravity is defined as the ratio of the density of a given substance to the density of water, when both are at the same temperature. See also: Specific Gravity

Specific Gravity: 0.978

Specific gravity is defined as the ratio of the density of a given substance to the density of water, when both are at the same temperature. See also: Specific Gravity

Specific Gravity: 0.978

Specific gravity is defined as the ratio of the density of a given substance to the density of water, when both are at the same temperature. See also: Specific Gravity

Specific Gravity: 0.978

Specific gravity is defined as the ratio of the density of a given substance to the density of water, when both are at the same temperature. See also: Specific Gravity

Specific Gravity: 0.978

Specific gravity is defined as the ratio of the density of a given substance to the density of water, when both are at the same temperature. See also: Specific Gravity

Specific Gravity: 0.98

Specific gravity is defined as the ratio of the density of a given substance to the density of water, when both are at the same temperature. See also: Specific Gravity

Refraction Index: 1.5100

The refractive index (or index of refraction) of a medium is a measure for how much the speed of light (or other waves such as sound waves) is reduced inside the medium. See also: Refraction Index

Refraction Index: 1.5100

The refractive index (or index of refraction) of a medium is a measure for how much the speed of light (or other waves such as sound waves) is reduced inside the medium. See also: Refraction Index

Refraction Index: 1.5100

The refractive index (or index of refraction) of a medium is a measure for how much the speed of light (or other waves such as sound waves) is reduced inside the medium. See also: Refraction Index

Refraction Index: 1.5100

The refractive index (or index of refraction) of a medium is a measure for how much the speed of light (or other waves such as sound waves) is reduced inside the medium. See also: Refraction Index

Refraction Index: 1.5100

The refractive index (or index of refraction) of a medium is a measure for how much the speed of light (or other waves such as sound waves) is reduced inside the medium. See also: Refraction Index

logP: 0.65

No description available

Solubility: Miscible with water, alcohol, ether, pet ether, oils

No description available

Solubility: Miscible

No description available

Solubility: 0.76

No description available

Ionization Potential: 9.27 eV

No description available

Vapor Pressure: 16 mmHg

No description available

miscellaneous

Appearance: Colorless to yellow liquid with a nauseating, fish-like odor.

Visual appearance of the given substance.

Appearance: colourless liquid with a very unpleasant odour

Visual appearance of the given substance.

Stability: Stable. Flammable. Incompatible with strong oxidizing agents,strong acids.

Chemical stability occurs when a substance is in a (dynamic) chemical equilibrium with its environment. See also: Chemical Stability

Toxicity: ORL-RAT LD50 891 mg kg-1, IPR-RAT LD50 866 mg kg-1, SCU-RAT LD50 1000 mg kg-1, SKN-RBT LD50 1121 mg kg-1

Toxicity is the degree to which something is able to produce illness or damage to an exposed organism. See also: Toxicity and list of used abbreviations.

Safety: DANGER: FLAMMABLE; Causes CNS effects; irritates skin, lungs

See Chemical Safety

Safety: DANGER: FLAMMABLE; Causes CNS effects; irritates skin, lungs

See Chemical Safety

Safety: DANGER: FLAMMABLE; Causes CNS effects; irritates skin, lungs

See Chemical Safety

Safety: DANGER: FLAMMABLE; Causes CNS effects; irritates skin, lungs

See Chemical Safety

Safety: DANGER: FLAMMABLE; Causes CNS effects; irritates skin, lungs

See Chemical Safety

Safety: Safety glasses, gloves, good ventilation.

See Chemical Safety

First Aid: Eye: Irrigate immediately Skin: Water flush immediately Breathing: Respiratory support Swallow: Medical attention immediately

No description available

Exposure Routes: inhalation, skin absorption, ingestion, skin and/or eye contact

No description available

Symptoms: Irritation eyes; headache, anxiety, dizziness, insomnia; nausea, anorexia; dermatitis; liver, kidney damage

No description available

Target Organs: Eyes, skin, central nervous system, liver, kidneys, gastrointestinal tract,

No description available

Incompatibilities and Reactivities: Strong oxidizers, strong acids

No description available

Personal protection and Sanitation: Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated Remove: When wet (flammable) Change: No recommendation Provide: Eyewash, Quick drench

No description available

Exposure Limits: NIOSH REL : TWA 5 ppm (15 mg/m 3 ) OSHA PEL : TWA 5 ppm (15 mg/m 3 )

No description available

Names and Synonyms

Validated by Experts, Validated by Users, Non-Validated, Removed by Users, Redirected by Users, Redirect Approved by Experts

230-720-2 [EINECS/ELINCS]

5-Azin

7291-22-7 [RN]

Pirydyna

Pyridin

pyridine [Wiki]

Piridina

(2H5)pyridine

110-86-1 [RN]

152758-95-7 [RN]