1-Methyl-4-hydroxy-1H-pyrazole
[CAS# 78242-20-3]

Identification

• Name: 1-Methyl-4-hydroxy-1H-pyrazole
• Synonyms: 1-Methyl-1H-pyrazol-4-ol
• Molecular Formula: C₄H₆N₂O
• Molecular Weight: 98.10
• CAS Registry Number: 78242-20-3
• EC Number: 820-520-9

Properties

• Solubility: Soluble (76 g/L) (25 °C), Calc.^*
• Density: 1.22±0.1 g/cm³ (20 °C 760 Torr), Calc.^*
• Boiling point: 217.7±13.0 °C (760 Torr), Calc.^*
• Flash point: 85.4±19.8 °C, Calc.^*

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

Safety Data

Hazard Classification

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