| Formula / Notation | C5H5N |
|---|---|
| CAS Number | 110-86-1 |
| Molecular Weight | 79.10 |
| Melting Point | -44 °F (NTP, 1992) |
| Boiling Point | 239 °F at 760 mmHg (NTP, 1992) |
| Density | 0.983 at 68 °F (USCG, 1999) - Less dense than water; will float |
| Solubility | greater than or equal to 100 mg/mL at 70.7 °F (NTP, 1992) |
| Appearance | Pyridine appears as a clear colorless to light yellow liquid with a penetrating nauseating odor. Vapors are heavier than air. Toxic by ingestion and inhalation. Combustion produces toxic oxides of ... |
| Also Known As | 110-86-1; Azabenzene; Azine; Pyridin; Piridina; Pirydyna; RCRA waste number U196; CP 32; NCI-C55301; FEMA No. 2966 |
| Category | Bases & Alkalis |
What is Pyridine?
Pyridine is an azaarene comprising a benzene core in which one -CH group is replaced by a nitrogen atom. It is the parent compound of the class pyridines. It has a role as an environmental contaminant. It is a member of pyridines, a mancude organic heteromonocyclic parent, a monocyclic heteroarene and an azaarene.
Formula & Notation
IUPAC Name: pyridine
Other Names / Synonyms: 110-86-1; Azabenzene; Azine; Pyridin; Piridina; Pirydyna; RCRA waste number U196; CP 32; NCI-C55301; FEMA No. 2966
Properties & Characteristics
Physical Data
| Property | Value |
|---|---|
| Melting Point | -44 °F (NTP, 1992) |
| Boiling Point | 239 °F at 760 mmHg (NTP, 1992) |
| Density | 0.983 at 68 °F (USCG, 1999) - Less dense than water; will float |
| Molecular Weight | 79.10 |
| Solubility | greater than or equal to 100 mg/mL at 70.7 °F (NTP, 1992) |
| Appearance | Pyridine appears as a clear colorless to light yellow liquid with a penetrating nauseating odor. Vapors are heavier than air. Toxic by ingestion and inhalation. Combustion produces toxic oxides of ... |
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
Pyridine is an azaarene comprising a benzene core in which one -CH group is replaced by a nitrogen atom. It is the parent compound of the class pyridines. It has a role as an environmental contaminant. It is a member of pyridines, a mancude organic heteromonocyclic parent, a monocyclic heteroarene and an azaarene.
Used in chemical manufacturing, pH adjustment, saponification, water treatment, and as a laboratory reagent.
Corrosive or irritant. Causes burns to skin and eyes. Store away from acids. Wear protective gloves and goggles. Consult SDS before use.
The formula or notation for Pyridine is: C5H5N