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33553

Sigma-Aldrich

Pyridine

puriss. p.a., ACS reagent, reag. Ph. Eur., ≥99.5% (GC)

Empirical Formula (Hill Notation):
C5H5N
Número de CAS:
Peso molecular:
79.10
Beilstein:
103233
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.21

Quality Level

grade

ACS reagent
puriss. p.a.

Agency/Method

reag. Ph. Eur.

vapor density

2.72 (vs air)

vapor pressure

10 mmHg ( 13.2 °C)
20 mmHg ( 25 °C)

assay

≥99.5% (GC)

form

liquid

autoignition temp.

899 °F

expl. lim.

12.4 %

impurities

≤0.0005% KMnO4 red. matter (as O)
≤0.002% ammonia (NH3)
≤0.002% non-volatile matter
≤0.01% piperidine (GC)
≤0.1% water (Karl Fischer)
≤0.2% 2-picoline (GC)

refractive index

n20/D 1.509 (lit.)

pH

8.5 (25 °C, 15.82 g/L)

bp

115 °C (lit.)

mp

−42 °C (lit.)

solubility

H2O: in accordance

density

0.978 g/mL at 25 °C (lit.)

anion traces

chloride (Cl-): ≤5 mg/kg
sulfate (SO42-): ≤5 mg/kg

cation traces

Al: ≤0.5 mg/kg
B: ≤0.02 mg/kg
Ba: ≤0.1 mg/kg
Ca: ≤0.5 mg/kg
Cd: ≤0.05 mg/kg
Co: ≤0.02 mg/kg
Cr: ≤0.02 mg/kg
Cu: ≤0.03 mg/kg
Fe: ≤0.1 mg/kg
Mg: ≤0.1 mg/kg
Mn: ≤0.02 mg/kg
Ni: ≤0.02 mg/kg
Pb: ≤0.1 mg/kg
Sn: ≤0.1 mg/kg
Zn: ≤0.1 mg/kg

SMILES string

C1=CN=CC=C1

InChI

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

InChI key

JUJWROOIHBZHMG-UHFFFAOYSA-N

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General description

Pyridine is a basic N-heterocyclic compound. It acts as a nitrogen donor ligand and forms many metal-pyridine complexes. Its complexes having tetrahedral and octahedral geometries can be differentiated by infrared spectral investigations.

Application

Pyridine (py) may be used in the preparation of vanadium oxide nanoparticles and iron benzenedicarboxylates, Fe(OH)(BDC)(py)0.85 (BDC = 1,4-benzenedicarboxylate, py = pyridine). It may be employed as a catalyst in Knoevenagel condensation reaction.

pictograms

FlameExclamation mark

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 Code

3 - Flammable liquids

WGK Germany

WGK 2

Flash Point F

68.0 °F - closed cup

Flash Point C

20 °C - closed cup

Certificado de Análisis

Certificado de origen

Metal-organic frameworks based on iron oxide octahedral chains connected by benzenedicarboxylate dianions.
Whitfield TR, et al.
Solid State Sciences, 7(9), 1096-1103 (2005)
The far-infrared spectra of metal-halide complexes of pyridine and related ligands.
Clark RJH and Williams CS.
Inorganic Chemistry, 4(3), 350-357 (1965)
An investigation of Knoevenagel condensation reaction in microreactors using a new zeolite catalyst.
Zhang X, et al.
Applied Catalysis A: General, 261(1), 109-118 (2004)
Porous monodisperse V2O5 microspheres as cathode materials for lithium-ion batteries.
Wang S, et al.
Journal of Materials Chemistry, 21(17), 6365-6369 (2011)
Total syntheses of complanadines A and B.
Le Zhao et al.
Angewandte Chemie (International ed. in English), 52(6), 1722-1725 (2013-01-03)

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