Pharmaceutical Intermediates

1-(3-Chlorophenyl)-3-methyl-2-pyrazolin-5-one CAS:90-31-3 99%min

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Chemical Name: 1-(3-Chlorophenyl)-3-methyl-2-pyrazolin-5-one
CAS.NO: 90-31-3
Synonyms:
1-(3-Chlorophenyl)-3-methyl-1H-pyrazol-5(4H)-one
1-(3-CHLOROPHENYL)-3-METHYL-4,5-DIHYDRO-1H-PYRAZOL-5-ONE
2-Pyrazolin-5-one, 1-(m-chlorophenyl)-3-methyl-
 

Molecular Formula:C10H9ClN2O
Molecular Weight:208.64400
 

Physical and Chemical Properties:
Density:1.32 g/cm3
Boiling point:382.9ºC at 760 mmHg
Melting point:128-131ºC
Flash point:185.4ºC
Index of Refraction:1.625
 

Description:
Appearance:Light yellow crystalline powder
Purity:≥98.0%
 

Packing: 25kg drum
Storage:This product should be sealed in a cool dry place.
Use:Mainly used in organic synthetic acid dye varieties, such as the coupling component of medium orange 4.
 
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