2,3-Dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazole-4-carboxylic acid
[CAS# 83-10-3]

Identification

• Name: 2,3-Dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazole-4-carboxylic acid
• Synonyms: 4-Antipyrinecarboxylic acid; NSC 59834
• Molecular Formula: C₁₂H₁₂N₂O₃
• Molecular Weight: 232.24
• CAS Registry Number: 83-10-3
• EC Number: 635-123-4

Properties

• Solubility: Slightly soluble (7.4 g/L) (25 °C), Calc.^*
• Density: 1.342±0.06 g/cm³ (20 °C 760 Torr), Calc.^*
• Melting point: 219-221 °C (ethanol )^**

^* Calculated using Advanced Chemistry Development (ACD/Labs) Software V11.02 (©1994-2016 ACD/Labs)

^** Wrzeciono, U.

Safety Data

Hazard Classification

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