| Identification | More | [Name]
Pyridine-N-oxide | [CAS]
694-59-7 | [Synonyms]
PYRIDINE-1-OXIDE
PYRIDINE-N-OXIDE
1-oxidePyridine
Pyridine oxide
pyridineoxide
Pyridin-N-oxid
Pyridine-N-Oxidee
PYRIDINE-1-OXIDE 97%
Pyridne-N-Oxide
PyridineN-oxide,95%
3-PICOLIN-N-OXIDE
1-Oxidopyridin-1-ium
1-Oxylatopyridinium | [EINECS(EC#)]
211-774-6 | [Molecular Formula]
C5H5NO | [MDL Number]
MFCD00006194 | [Molecular Weight]
95.1 | [MOL File]
694-59-7.mol |
| Chemical Properties | Back Directory | [Appearance]
White to light yellow solid | [Melting point ]
62-67 °C(lit.)
| [Boiling point ]
270 °C(lit.)
| [density ]
1.1418 (rough estimate) | [refractive index ]
1.5939 (estimate) | [Fp ]
143 °C
| [storage temp. ]
2-8°C
| [form ]
Crystalline Solid, Crystals, and/or Chunks | [pka]
0.79(at 24℃) | [color ]
White to brownish | [Water Solubility ]
soluble | [Sensitive ]
Hygroscopic | [Merck ]
14,7972 | [BRN ]
105257 | [InChI]
1S/C5H5NO/c7-6-4-2-1-3-5-6/h1-5H | [InChIKey]
ILVXOBCQQYKLDS-UHFFFAOYSA-N | [SMILES]
[O-][n+]1ccccc1 | [Uses]
Intermediate.
| [CAS DataBase Reference]
694-59-7(CAS DataBase Reference) | [NIST Chemistry Reference]
Pyridine, 1-oxide(694-59-7) | [Storage Precautions]
Moisture sensitive | [EPA Substance Registry System]
694-59-7(EPA Substance) |
| Safety Data | Back Directory | [Symbol(GHS) ]
GHS06 | [Signal word ]
Warning | [Hazard statements ]
H301-H315-H319-H335 | [Precautionary statements ]
P261-P280a-P301+P310a-P305+P351+P338-P405-P501a | [Hazard Codes ]
Xi,Xn | [Risk Statements ]
R36/37/38:Irritating to eyes, respiratory system and skin .
R22:Harmful if swallowed.
R40:Limited evidence of a carcinogenic effect.
R20/21/22:Harmful by inhalation, in contact with skin and if swallowed . | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S24/25:Avoid contact with skin and eyes .
S37/39:Wear suitable gloves and eye/face protection .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S22:Do not breathe dust . | [WGK Germany ]
3
| [RTECS ]
UT6410000
| [F ]
21 | [TSCA ]
Yes | [HS Code ]
29333999 | [Storage Class]
11 - Combustible Solids |
| Hazard Information | Back Directory | [Hazard]
Probably flammable and toxic.
| [Chemical Properties]
White to light yellow solid | [Definition]
ChEBI: The pyridine N-oxide derived from the parent pyridine. It is a drug metabolite of the antihypertensive agent pinacidil. | [Synthesis Reference(s)]
Organic Syntheses, Coll. Vol. 4, p. 828, 1963
Tetrahedron Letters, 12, p. 2807, 1971 DOI: 10.1016/S0040-4039(01)97047-9 | [General Description]
Pyridine N-oxide axle with [2]rotaxanes was synthesized via an anion templated threading-followed-by-stoppering strategy. | [Purification Methods]
Purify the N-oxide by crystallisation from Et2O and by vacuum sublimation. The picrolonate has m 182-184o. [Katritzky J Chem Soc 2407 1956, Beilstein 20 III/IV 2305, 20/5 V 217.] |
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