Pyridine R. G. ACS Reagent Ph.Eur. ≥99.5% 1 Liter
- CAS Number 110-86-1
- Empirical Formula (Hill Notation) C5H5N
- Molecular Weight 79.10
- Beilstein/REAXYS Number 103233
- EC Number 203-809-9
- MDL number MFCD00011732
- PubChem Substance ID 329754576
- NACRES NA.21
| Grade | ACS reagent, Reagent. Ph. Eur. |
| Vapor Density | 2.72 (vs air) |
| Vapor Pressure | 10 mmHg (13.2°C) 20 mmHg (25°C) |
| Grade | puriss. p.a. |
| Assay | ≥99.5% (GC) |
| Autoignition Temperature | 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.) |
| 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 |
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[3] and iron benzenedicarboxylates, Fe(OH)(BDC)(py)0.85 (BDC = 1,4-benzenedicarboxylate, py = pyridine).[4] It may be employed as a catalyst in Knoevenagel condensation reaction.
Safety Information
Signal word Danger
Hazard statements H225-H302 + H312 + H332-H315-H319
Precautionary statements P210-P280-P305 + P351 + P338
RIDADR UN1282 – class 3 – PG 2 – Pyridine
WGK Germany 2
RTECS UR8400000
Flash Point(F) 62.6°F
Flash Point(C) 17°C





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