3-Acetylpyrazole
[CAS# 20583-33-9]

Identification

• Name: 3-Acetylpyrazole
• Synonyms: 1-(1H-Pyrazol-3-yl)ethanone; 3-Acetylpyrazole; 3-Methylcarbonylpyrazole; NSC 334648
• Molecular Formula: C₅H₆N₂O
• Molecular Weight: 110.11
• CAS Registry Number: 20583-33-9
• EC Number: 815-441-1

Properties

• Solubility: Slightly soluble (3.4 g/L) (25 ºC), Calc.^*
• Density: 1.190±0.06 g/cm³ (20 ºC 760 Torr), Calc.^*
• Melting point: 100-101 ºC (benzene )^**
• Boiling point: 277.7±13.0 ºC (760 Torr), Calc.^*
• Flash point: 125.9±26.3 ºC, Calc.^*

^* Calculated using Advanced Chemistry Development (ACD/Labs) Software V11.02 (©1994-2017 ACD/Labs)

^** Nesmeyanov, A. N.; Doklady Akademii Nauk SSSR 1951, V77, P65-8.

Safety Data

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Specific target organ toxicity - single exposure	STOT SE	3	H335
Skin irritation	Skin Irrit.	2	H315
Eye irritation	Eye Irrit.	2	H319