1H-Pyrazole-4-carboxylic acid methyl ester
[CAS# 51105-90-9]

Identification

• Name: 1H-Pyrazole-4-carboxylic acid methyl ester
• Synonyms: Methyl 1H-pyrazole-4-carboxylate; Methyl pyrazole-4-carboxylate
• Molecular Formula: C₅H₆N₂O₂
• Molecular Weight: 126.11
• CAS Registry Number: 51105-90-9
• EC Number: 811-544-0

Properties

• Density: 1.275
• Melting point: 145-146 °C
• Boiling point: 271 °C
• Flash point: 118 °C

Safety Data

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Acute toxicity	Acute Tox.	4	H302
Eye irritation	Eye Irrit.	2	H319
Acute toxicity	Acute Tox.	4	H312
Acute toxicity	Acute Tox.	4	H332
Specific target organ toxicity - single exposure	STOT SE	3	H335
Skin irritation	Skin Irrit.	2	H315