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Benzenesulfonic acid,2,5-dichloro-4-(4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)- cas no:84-57-1

Synonyms: Benzenesulfonicacid, 2,5-dichloro-4-(3-methyl-5-oxo-2-pyrazolin-1-yl)- (6CI,8CI);1-(2',5'-Dichloro)phenyl-3-methyl-5-pyrazolone-4'-sulfonic acid;1-(2',5'-Dichloro-4'-sulfophenyl)-3-methyl-5-pyrazolone;2,5-dichloro-4-(4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)benzenesulfonicacid;NSC 50666;p-(3-Methyl-5-oxo-2-pyrazolin-1-yl)-2,5-dichlorbenzenesulfonicacid;

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Identification
Chemical Properties
Safety Data

Identification

NameBenzenesulfonic acid,2,5-dichloro-4-(4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)-
CAS84-57-1
SynonymsBenzenesulfonicacid, 2,5-dichloro-4-(3-methyl-5-oxo-2-pyrazolin-1-yl)- (6CI,8CI);1-(2',5'-Dichloro)phenyl-3-methyl-5-pyrazolone-4'-sulfonic acid;1-(2',5'-Dichloro-4'-sulfophenyl)-3-methyl-5-pyrazolone;2,5-dichloro-4-(4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)benzenesulfonicacid;NSC 50666;p-(3-Methyl-5-oxo-2-pyrazolin-1-yl)-2,5-dichlorbenzenesulfonicacid;
EINECS(EC#)201-541-7
Molecular FormulaC₁₀H₆Cl₂N₂O₄S
Molecular Weight323.15

Chemical Properties

refractive index1.645

Safety Data

Hazard Xi: Irritant;
Risk R36/37/38
Safety A severe eye irritant. See also SULFONATES. When heated to decomposition it emits very toxic fumes of SOx, NOx, and Cl−.

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