3-Methyl-2-pyrazolin-5-one
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3-Methyl-2-pyrazolin-5-one
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CAS No:
108-26-9
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Formula:
C4H6N2O
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Chemical Name:
3-Methyl-2-pyrazolin-5-one
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Synonyms:
3H-Pyrazol-3-one,2,4-dihydro-5-methyl-;2-Pyrazolin-5-one,3-methyl-;2,4-Dihydro-5-methyl-3H-pyrazol-3-one;3-Methyl-2-pyrazolin-5-one;3-Methyl-Δ2-pyrazol-5-one;3-Methyl-5-oxo-2-pyrazoline;3-Methyl-1H-4,5-dihydropyrazol-5-one;3-Methyl-1H-pyrazolin-5-one;3-Methyl-1H-pyrazol-5(4H)-one;3-Methyl-4H-pyrazole-5-one;1H-3-Methylpyrazol-5-one;3-Methyl-1,4-dihydro-5-pyrazolone;3-Methyl-4,5-dihydro-1H-pyrazol-5-one;3-Methyl-1,4-dihydropyrazol-5-one;206195-93-9;937063-51-9
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CAS No:
Characteristics
41.5
-0.5
pale white crystal powder
1.1890 (rough estimate)
220 °C
183.6°C (rough estimate)
141.1ºC
1.4327 (estimate)
Slightly soluble in ethanol.
Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
0.000345mmHg at 25°C
Safety Information
NONH for all modes of transport
3
36/37/38
24/25
UQ9451500
Xi
Stable under normal temperatures and pressures.
P273, P391, P501
H400
|Warning|H400 (94.62%): Very toxic to aquatic life [Warning Hazardous to the aquatic environment, acute hazard]|P273, P391, and P501|Aggregated GHS information provided by 105 companies from 4 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
3-Methyl-2-pyrazolin-5-one Use and Manufacturing
3-Methyl-2-pyrazolin-5-one is used as intermediate for the manufacture of dyestuffs as well as for agrochemicals.
3H-Pyrazol-3-one, 2,4-dihydro-5-methyl-: ACTIVE
Computed Properties
Molecular Weight:98.10
XLogP3:-0.5
Hydrogen Bond Donor Count:1
Hydrogen Bond Acceptor Count:2
Exact Mass:98.048012819
Monoisotopic Mass:98.048012819
Topological Polar Surface Area:41.5
Heavy Atom Count:7
Complexity:128
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes
