Pyridine
SIGALD/33553 - puriss. p.a., ACS reagent, reag. Ph. Eur., ≥99.5% (GC)
CAS Number: 110-86-1
Empirical Formula (Hill Notation): C5H5N
Molecular Weight: 79.10
EC Number: 203-809-9
MDL Number: MFCD00011732
Linear Formula: C5H5N
Product Type: Chemical
| agency | reag. Ph. Eur. |
| anion traces | chloride (Cl-): ≤5 mg/kg |
| sulfate (SO42-): ≤5 mg/kg | |
| assay | ≥99.5% (GC) |
| autoignition temp. | 899 °F |
| bp | 115 °C (lit.) |
| 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 | |
| density | 0.978 g/mL at 25 °C (lit.) |
| expl. lim. | 12.4 % |
| form | liquid |
| grade | ACS reagent |
| puriss. p.a. | |
| 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) | |
| InChI | 1S/C5H5N/c1-2-4-6-5-3-1/h |
| InChI key | JUJWROOIHBZHMG-UHFFFAOYSA |
| mp | −42 °C (lit.) |
| pH | 8.5 (25 °C, 15.82 g/L) |
| Quality Level | 200  |
| refractive index | n |
| SMILES string | C1=CN=CC=C1 |
| solubility | H2O: in accordance |
| vapor density | 2.72 (vs air) |
| vapor pressure | 10 mmHg ( 13.2 °C) |
| 20 mmHg ( 25 °C) |
| 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. |
| 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. |
| Symbol |   GHS02,GHS07 |
| Signal word | Danger |
| Hazard statements | H225 - H302 + H312 + H332 - H315 - H319 |
| Precautionary statements | P210 - P280 - P301 + P312 - P303 + P361 + P353 - P304 + P340 + P312 - P305 + P351 + P338 |
| Hazard Codes | F,Xn |
| Risk Statements | 11-20/21/22-36/38-52 |
| Safety Statements | 26-28 |
| RIDADR | UN1282 - class 3 - PG 2 - Pyridine |
| WGK Germany | WGK 2 |
| Flash Point(F) | 68.0 °F - closed cup |
| Flash Point(C) | 20 °C - closed cup |
| Purity | ≥99.5% (GC) |
| bp | 115 °C (lit.) |
| mp | −42 °C (lit.) |
| Density | 0.978 g/mL at 25 °C (lit.) |
| Refractive Index | n |
| UNSPSC | 12352005 |