P57506
Pyridine
ReagentPlus®, ≥99%
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About This Item
Empirical Formula (Hill Notation):
C5H5N
CAS Number:
Molecular Weight:
79.10
UNSPSC Code:
12352005
NACRES:
NA.21
PubChem Substance ID:
EC Number:
203-809-9
Beilstein/REAXYS Number:
103233
MDL number:
Assay:
≥99%
Bp:
115 °C (lit.)
Vapor pressure:
10 mmHg ( 13.2 °C), 20 mmHg ( 25 °C)
Quality Segment
vapor density
2.72 (vs air)
vapor pressure
10 mmHg ( 13.2 °C), 20 mmHg ( 25 °C)
product line
ReagentPlus®
assay
≥99%
form
liquid
autoignition temp.
899 °F
expl. lim.
12.4 %
dilution
(for general lab use)
impurities
≤0.1% water (Karl Fischer)
refractive index
n20/D 1.509 (lit.)
pH
8.5 (25 °C, 15.82 g/L)
bp
115 °C (lit.)
mp
−42 °C (lit.)
density
0.978 g/mL at 25 °C (lit.)
SMILES string
C1=CN=CC=C1
InChI
1S/C5H5N/c1-2-4-6-5-3-1/h1-5H
InChI key
JUJWROOIHBZHMG-UHFFFAOYSA-N
General description
Pyridine (Pyr) is a nitrogen-containing six-membered heterocyclic compound that is commonly used as a solvent in organic synthesis. It also has wide applications as a base, catalyst, and intermediate for synthesis.
Application
Pyridine can be used as a solvent:
- To synthesize glycophospholipids and phosphate diesters or phosphonate monoesters in the presence of trichloroacetonitrile as an activating reagent.
- In Knoevenagel condensation reactions.
- In the TEMPO-mediated radical polymerization of 3-vinylpyridine.
Legal Information
ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany
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signalword
Danger
Hazard Classifications
Acute Tox. 4 Dermal - Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Eye Irrit. 2 - Flam. Liq. 2 - Skin Irrit. 2
Storage Class
3 - Flammable liquids
wgk
WGK 2
flash_point_f
68.0 °F - closed cup
flash_point_c
20 °C - closed cup
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