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Home >> Chemical Listing >> D >> 1,2-Dihydro-3H-pyrazol-3-one

1,2-Dihydro-3H-pyrazol-3-one
[CAS# 137-45-1]

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Identification
Name 1,2-Dihydro-3H-pyrazol-3-one
Synonyms 3-Pyrazolone; 4-Pyrazolin-3-one; NSC 520837; Pyrazol-3-ol; Pyrazol-5-ol
Molecular Structure CAS # 137-45-1 (60456-92-0), 1,2-Dihydro-3H-pyrazol-3-one, 3-Pyrazolone, 4-Pyrazolin-3-one, NSC 520837, Pyrazol-3-ol, Pyrazol-5-ol
Molecular Formula C3H4N2O
Molecular Weight 84.08
CAS Registry Number 137-45-1 (60456-92-0)
EC Number 878-599-0
Properties
Solubility Freely soluble (271 g/L) (25 ºC), Calc.*
Density 1.191±0.06 g/cm3 (20 ºC 760 Torr), Calc.*
Melting point 164 ºC**
* Calculated using Advanced Chemistry Development (ACD/Labs) Software V11.02 (©1994-2015 ACD/Labs)
** Kasahara, Akira; Chemistry & Industry (London, United Kingdom) 1976, (23), P1032.
Safety Data
Hazard Classification
up    Details
HazardClassCategory CodeHazard Statement
Eye irritationEye Irrit.2H319
Skin irritationSkin Irrit.2H315
SDS Available
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