File:Pyridine-2D-full.svg · Wikimedia Commons · See Wikimedia Commons
ピリジン
Sign in to saveAlso known as azabenzene, py, Tritisan, pyridin, piridina
Pyridine is a basic heterocyclic organic compound with the chemical formula . It is structurally related to benzene, with one methine group replaced by a nitrogen atom . It is a highly flammable, weakly alkaline, water-miscible liquid with a distinctive, unpleasant fish-like smell. Pyridine is colorless, but older or impure samples can appear yellow. The pyridine ring occurs in many commercial compounds, including agrochemicals, pharmaceuticals, and vitamins. Historically, pyridine was produced from coal tar. As of 2016, it is synthesized on the scale of about 20,000 tons per year worldwide.
Pyridine is a colorless liquid chemical compound similar to benzene but with a nitrogen atom in its ring structure, known for its flammable nature and distinctive fishy smell. It's an important ingredient in thousands of commercial products including pesticides, medicines, and vitamins, with about 20,000 tons produced globally each year.
AI-generated from the Wikipedia summary — may contain errors.
Chemical data
- Formula
- C5H5N
- Molecular weight
- 79.1 g/mol
- IUPAC name
- pyridine
- SMILES
- C1=CC=NC=C1
- InChIKey
- JUJWROOIHBZHMG-UHFFFAOYSA-N
- XLogP
- 0.7
- Polar surface area
- 12.9 Ų
- H-bond donors
- 0
- H-bond acceptors
- 1
- Formal charge
- 0
via PubChem
Drug data · ChEMBL
- Molecule type
- Small molecule
via ChEMBL · EBI
Wikidata facts
- Subclass of
- pyridine alkaloid
- Has part
- hydrogen
- Mass
- 79.042
- Image
- Pyridine sample.jpg
Show 21 more facts
- MCN code
- 2933.31.10
- Commons category
- Pyridine
- chemical formula
- C₅H₅N
- upper flammable limit
- 12.4
- flash point
- 68
- lower flammable limit
- 1.8
- NIOSH Pocket Guide ID
- 0541
- density
- 0.98
- immediately dangerous to life or health
- 3240
- melting point
- -41.66
- boiling point
- 115.23
- vapor pressure
- 16
- ionization energy
- 9.25
- time-weighted average exposure limit
- 15
- canonical SMILES
- C1=CC=NC=C1
- described by source
- Encyclopædia Britannica 11th edition
- dynamic viscosity
- 0.94
- different from
- pyrimidine
- conjugate acid
- pyridinium
- subject has role
- carcinogen
- electric dipole moment
- 2.215
Sources (8)
via Wikidata · CC0
Article · 日本語
ピリジン (pyridine) は化学式 C5H5N、分子量 79.10 の複素環式芳香族化合物のアミンの一種である。ベンゼンに含まれる6つの C−H 構造のうち1つが窒素原子に置き換わった構造をもつ。融点 −41.6℃、沸点 115.2℃。人間の女性からも分泌される。腐り果てた魚のような臭いを発する液体である。 石油に含まれるほか、誘導体（ピリジンアルカロイド）が植物に広範に含まれる。ニコチンやピリドキシンなどもピリジン環を持つ。酸化剤として知られるクロロクロム酸ピリジニウム (PCC) の原料として重要。また有機合成において溶媒として用いられる。 消防法による危険物（第四類 引火性液体、第一石油類（水溶性液体）（指定数量：400L））に指定されており、一定量以上の貯蔵には消防署への届出が必要である。 人間の皮膚と接触するとメラニンと反応を起こし黒く色素沈着を残すため保護手袋での取り扱いが必要である。
Abstract from DBpedia / Wikipedia · CC BY-SA