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ChemicalBook--->CAS DataBase List--->1457-42-7

1457-42-7

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1457-42-7 Structure

1457-42-7 Structure
IdentificationBack Directory
[Name]

Pyridazine N-oxide
[CAS]

1457-42-7
[EINECS(EC#)]

200-001-2
[Molecular Formula]

C4H4N2O
[MDL Number]

MFCD05742416
[MOL File]

1457-42-7.mol
[Molecular Weight]

96.09
Chemical PropertiesBack Directory
[Melting point ]

298-305 °C
Safety DataBack Directory
[Symbol(GHS) ]


GHS05,GHS07
[Signal word ]

Danger
[Hazard statements ]

H302-H315-H318-H335
[Precautionary statements ]

P261-P280-P305+P351+P338
[Hazard Codes ]

Xn
[Risk Statements ]

22-37/38-41
[Safety Statements ]

26-39
[RIDADR ]

UN 3335
[WGK Germany ]

3
Spectrum DetailBack Directory
[Spectrum Detail]

Pyridazine N-oxide(1457-42-7)1HNMR
Hazard InformationBack Directory
[Purification Methods]

Purify the oxide by distillation in a vacuum and by sublimation in vacuo. When a solution of the oxide in MeOH is treated with an aqueous solution of CuCl2, the [C4H4N2O]2—CuCl2-2H2O-complex (m 182-183o) is formed from which the oxide can be recovered . [Pollak et al. J Org Chem 35 2478 1970, Klinge et al. Recl Trav Chim, Pays Bas 95 21 1976, Ohsawa et al. Tetrahedron Lett 1979 1978, Koelsch & Gumprecht J Org Chem 23 1605 1958, Beilstein 23 III/IV 890.]
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