1-methyl-3-trifluoromethyl-2-pyrazolin-5-one

Modify Date: 2025-08-22 16:43:04

1-methyl-3-trifluoromethyl-2-pyrazolin-5-one Structure
1-methyl-3-trifluoromethyl-2-pyrazolin-5-one structure
 Common Name 1-methyl-3-trifluoromethyl-2-pyrazolin-5-one
CAS Number 1481-02-3 Molecular Weight 166.10100
Density 1.5 g/cm3 Boiling Point 101.6ºC at 760 mmHg
Molecular Formula C5H5F3N2O Melting Point 178 °C
MSDS USA Flash Point 15.3ºC

 Names

Name 2-methyl-5-(trifluoromethyl)-4H-pyrazol-3-one
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.5 g/cm3
Boiling Point 101.6ºC at 760 mmHg
Melting Point 178 °C
Molecular Formula C5H5F3N2O
Molecular Weight 166.10100
Flash Point 15.3ºC
Exact Mass 166.03500
PSA 32.67000
LogP 0.14030
Vapour Pressure 0.029mmHg at 25°C
Index of Refraction 1.53

 Safety Information

Hazard Codes Xi: Irritant;
Risk Phrases 25
Safety Phrases S22-S24/25
HS Code 2933199090

 Customs

HS Code 2933199090
Summary 2933199090. other compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

 Synonyms

1-methyl-3-trifluoromethyl-4H-pyrazol-5-one
MFCD00051654
1-METHYL-3-TRIFLUOROMETHYL-2-PYRAZOLIN-5-ONE
2-methyl-5-trifluoromethyl-2,4-dihydro-pyrazol-3-one
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Chemsrc provides CAS#:1481-02-3 MSDS, density, melting point, boiling point, structure, etc. Its name is 1-methyl-3-trifluoromethyl-2-pyrazolin-5-one>> amp version: 1-methyl-3-trifluoromethyl-2-pyrazolin-5-one

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