4,5-Dichloro-3(2H)-pyridazinone

Modify Date: 2025-08-20 17:24:45

4,5-Dichloro-3(2H)-pyridazinone Structure
4,5-Dichloro-3(2H)-pyridazinone structure
 Common Name 4,5-Dichloro-3(2H)-pyridazinone
CAS Number 932-22-9 Molecular Weight 164.977
Density 1.8±0.1 g/cm3 Boiling Point 339.2ºC at 760 mmHg
Molecular Formula C4H2Cl2N2O Melting Point 204-206 °C(lit.)
MSDS Chinese USA Flash Point 159ºC
Symbol GHS07
GHS07		 Signal Word Warning

 Names

Name 4,5-Dichloro-3(2H)-pyridazinone
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.8±0.1 g/cm3
Boiling Point 339.2ºC at 760 mmHg
Melting Point 204-206 °C(lit.)
Molecular Formula C4H2Cl2N2O
Molecular Weight 164.977
Flash Point 159ºC
Exact Mass 163.954422
PSA 45.75000
LogP -0.10
Index of Refraction 1.662

 Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
UR6182000
CHEMICAL NAME :
3(2H)-Pyridazinone, 4,5-dichloro-
CAS REGISTRY NUMBER :
932-22-9
LAST UPDATED :
199212
DATA ITEMS CITED :
2
MOLECULAR FORMULA :
C4-H2-Cl2-N2-O
MOLECULAR WEIGHT :
164.98

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LD - Lethal dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
>1 gm/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
FRPSAX Farmaco, Edizione Scientifica. (Casella Postale 227, 27100 Pavia, Italy) V.8-43 1953-88 For publisher information, see FRMCE8 Volume(issue)/page/year: 40,921,1985
TYPE OF TEST :
LD - Lethal dose
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
>300 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
FRPSAX Farmaco, Edizione Scientifica. (Casella Postale 227, 27100 Pavia, Italy) V.8-43 1953-88 For publisher information, see FRMCE8 Volume(issue)/page/year: 40,921,1985

 Safety Information

Symbol GHS07
GHS07
Signal Word Warning
Hazard Statements H302
Personal Protective Equipment Eyeshields;Gloves;type N95 (US);type P1 (EN143) respirator filter
Hazard Codes Xi:Irritant;
Risk Phrases R36/37/38
Safety Phrases S26-S36-S37/39
RIDADR NONH for all modes of transport
WGK Germany 3
RTECS UR6182000
HS Code 2933990090

 Synthetic Route

 Customs

HS Code 2933990090
Summary 2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

 Articles1

More Articles
Vibrational spectra and potential energy distributions for 4,5-dichloro-3-hydroxypyridazine by density functional theory and normal coordinate calculations.

Spectrochim. Acta. A. Mol. Biomol. Spectrosc. 61(11-12) , 2526-32, (2005)

The solid phase FT-IR and FT-Raman spectra of 4,5-dichloro-3-hydroxypyridazine have been recorded in the regions 4000-400 cm(-1) and 3500-100 cm(-1), respectively. The spectra were interpreted with th...

 Synonyms

4,5-DICHLOR-2,3-DIHYDROPYRIDAZIN-3-ON
4,5-Dichloro-3(2H)-pyridazinon
4,5-dichloro-3-pyridazinol
4,5-dichloro-2-hydropyridazin-3-one
4,5-dichloro-1H-pyridazin-6-one
4,5-DICHLORO-3-(2H)PYRIDAZINONE
4,5-Dichloro-3(2H)-pyridazinone
4,5-Dichloro-pyridazin-3-ol
4,5-dichloropyridazin-3-ol
MFCD00051504
4,5-dichloro-2,3-dihydropyridazin-3-one
4,5-dichloropyridazin-3(2H)-one
4,5-Dichloro-2H-pyridazin-3-one
4,5-Dichloro-6-pyridazone
4 5-DICHLORO-3-HYDROXYPYRIDAZINE
3(2H)-Pyridazinone, 4,5-dichloro-
4,5-dichloro-3-hydroxypyridazine
3(2H)-PYRIDAZINONE
4,5-DICHLORO-3-HYDROXYPYRIDINE
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Chemsrc provides 4,5-Dichloro-3(2H)-pyridazinone(CAS#:932-22-9) MSDS, density, melting point, boiling point, structure, formula, molecular weight etc. Articles of 4,5-Dichloro-3(2H)-pyridazinone are included as well.>> amp version: 4,5-Dichloro-3(2H)-pyridazinone

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