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2-Methyl-2,4-dihydropyrazol-3-one
[CAS# 10234-66-9]

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Identification
Name 2-Methyl-2,4-dihydropyrazol-3-one
Synonyms 1-Methyl-2-pyrazolin-5-one; 1-Methyl-5-pyrazolone
Molecular Structure CAS # 10234-66-9, 2-Methyl-2,4-dihydropyrazol-3-one, 1-Methyl-2-pyrazolin-5-one, 1-Methyl-5-pyrazolone
Molecular Formula C4H6N2O
Molecular Weight 98.10
CAS Registry Number 10234-66-9
EC Number 864-885-2
Properties
Solubility Freely soluble (264 g/L) (25 ºC), Calc.*
Density 1.22±0.1 g/cm3 (20 ºC 760 Torr), Calc.*
Melting point 112-114 ºC**
Boiling point 136.9±23.0 ºC (760 Torr), Calc.*
Flash point 36.6±22.6 ºC, Calc.*
* Calculated using Advanced Chemistry Development (ACD/Labs) Software V11.02 (©1994-2015 ACD/Labs)
** Baba, Masatoshi; EP 240001 A1 1987.
Safety Data
Hazard Classification
up    Details
HazardClassCategory CodeHazard Statement
Eye irritationEye Irrit.2AH319
Specific target organ toxicity - single exposureSTOT SE3H335
Skin irritationSkin Irrit.2H315
Acute toxicityAcute Tox.4H302
SDS Available
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