33553

Pyridine

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

• Empirical Formula (Hill Notation): C₅H₅N
• CAS Number: 110-86-1
• Molecular Weight: 79.10
• Beilstein/REAXYS Number: 103233
• EC Number: 203-809-9
• MDL number: MFCD00011732
• UNSPSC Code: 12352005
• PubChem Substance ID: 329754576
• NACRES: NA.21

Properties

• grade: ACS reagent; puriss. p.a.
• Quality Level: 200
• agency: 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 (SO₄^2-): ≤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

Description

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.

Safety Information

• pictograms: GHS02,GHS07
• signalword: Danger
• hcodes: H225,H302 + H312 + H332,H315,H319
• pcodes: P210 - P280 - P301 + P312 - P303 + P361 + P353 - P304 + P340 + P312 - P305 + P351 + P338
• 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_germany: WGK 2
• flash_point_f: 68.0 °F - closed cup
• flash_point_c: 20 °C - closed cup