3H-Pyrazol-3-one,2,4-dihydro-4-methyl-

Names

[ Name ]:
3H-Pyrazol-3-one,2,4-dihydro-4-methyl-

[Synonym ]:
4-Methyl-pyrazolon-5
EINECS 236-346-6
4-Methyl-2-pyrazolin-5-one
4-methyl-2-pyrazoline-5-one
4-Methyl-2,4-dihydro-3H-pyrazol-3-one
2-Pyrazolin-5-one,4-methyl
MFCD00003093
2,4-dihydro-4-methyl-3H-pyrazol-3-one
4-methyl-1,2-dihydro-pyrazol-3-one

Chemical & Physical Properties

[ Density]:
1.107g/cm3

[ Boiling Point ]:
298.3ºC at 760 mmHg

[ Melting Point ]:
230-232ºC (dec.)(lit.)

[ Molecular Formula ]:
C₄H₆N₂O

[ Molecular Weight ]:
98.10320

[ Flash Point ]:
134.2ºC

[ Exact Mass ]:
98.04800

[ PSA ]:
41.46000

[ Vapour Pressure ]:
0.000721mmHg at 25°C

[ Index of Refraction ]:
1.475

MSDS

Click to get detail MSDS

Safety Information

[ Symbol ]:

GHS07

[ Signal Word ]:
Warning

[ Hazard Statements ]:
H315-H319-H335

[ Precautionary Statements ]:
P261-P305 + P351 + P338

[ Hazard Codes ]:
Xi

[ Safety Phrases ]:
S24/25

[ RIDADR ]:
NONH for all modes of transport

[ 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%