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Merck
CN

757675

Sigma-Aldrich

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

96%

Synonym(s):

2,4,5-Trichloro-2,3-dihydropyridazin-3-one, 2,4,5-Trichloro-2H-pyridazin-3-one

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About This Item

Empirical Formula (Hill Notation):
C4HCl3N2O
CAS Number:
89089-14-5
Molecular Weight:
199.42
MDL number:
MFCD11656435
UNSPSC Code:
12352100
PubChem Substance ID:
329766695
NACRES:
NA.22

Key Documents

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Assay

96%

form

powder

mp

144-150 °C

functional group

chloro

SMILES string

ClN1N=CC(Cl)=C(Cl)C1=O

InChI

1S/C4HCl3N2O/c5-2-1-8-9(7)4(10)3(2)6/h1H

InChI key

TYVNCWJMACHFGT-UHFFFAOYSA-N

Application

Electrophilic chlorinating reagent, particully effective for the chlorination of bithiophenes

Pictograms

Skull and crossbones
GHS06

Signal Word

Danger

Hazard Statements

H301

Precautionary Statements

P301 + P310

Hazard Classifications

Acute Tox. 3 Oral

Storage Class Code

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
MKBK1083

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2-Chloropyridazin-3(2H)-ones as Electrophilic Chlorinating Agents: Effective a-Chlorination of Active Methylene/Methine Compounds
Yong-Dae P.; et al.
Synthesis, 7, 1136-1140 (2005)

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