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| | 4,5-Dichloro-3(2H)-pyridazinone Basic information |
| | 4,5-Dichloro-3(2H)-pyridazinone Chemical Properties |
| Melting point | 204-206 °C(lit.) | | density | 1.76±0.1 g/cm3(Predicted) | | storage temp. | Keep in dark place,Sealed in dry,Room Temperature | | solubility | DMSO (Slightly), Methanol (Slightly) | | form | Crystalline Powder | | pka | 8.39±0.60(Predicted) | | color | White to yellow | | BRN | 120959 | | InChI | InChI=1S/C4H2Cl2N2O/c5-2-1-7-8-4(9)3(2)6/h1H,(H,8,9) | | InChIKey | VJWXIRQLLGYIDI-UHFFFAOYSA-N | | SMILES | C1(=O)NN=CC(Cl)=C1Cl | | CAS DataBase Reference | 932-22-9(CAS DataBase Reference) |
| Hazard Codes | Xi,Xn | | Risk Statements | 36/37/38-22 | | Safety Statements | 26-36-37/39 | | WGK Germany | 3 | | RTECS | UR6182000 | | HazardClass | IRRITANT | | HS Code | 29349990 | | Storage Class | 11 - Combustible Solids | | Hazard Classifications | Acute Tox. 4 Oral |
| | 4,5-Dichloro-3(2H)-pyridazinone Usage And Synthesis |
| Chemical Properties | Beige Crystalline Solid | | Uses |
4,5-Dichloro-3(2H)-pyridazinone is used as a new labelled substituted pyridazinone with tuberculostatic action.
| | Synthesis Reference(s) | Journal of Heterocyclic Chemistry, 28, p. 385, 1991 DOI: 10.1002/jhet.5570280234 | | General Description | The solid phase FT-IR and FT-Raman spectra of 4,5-dichloro-3-hydroxypyridazine was studied. | | Hazard |
4,5-Dichloro-3(2H)-pyridazinone causes skin irritation and serious eye irritation, it may cause respiratory irritation.
| | Synthesis | Hydrazine sulfate (305.7 g, 2.35 mol) was added to a solution of 3,4-dichloro-5-hydroxy-5H-furan-2-one (419 g, 2.48 mol) and sodium acetate (212 g, 2.58 mol) in water (600 mL). The mixture was stirred under reflux for 4 h. After filtration and evaporation, the residual solid was recrystallized from ethanol to provide 4,5-dichloropyridazin-3(2H)-one (216 g, 67%) as an off-white solid. |
| | 4,5-Dichloro-3(2H)-pyridazinone Preparation Products And Raw materials |
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