1-Phenyl-3-methylpyrazole
[CAS# 1128-54-7]

Identification

• Name: 1-Phenyl-3-methylpyrazole
• Synonyms: 3-Methyl-1-phenyl-1H-pyrazole; 3-Methyl-1-phenylpyrazole; NSC 163372
• Molecular Formula: C₁₀H₁₀N₂
• Molecular Weight: 158.20
• CAS Registry Number: 1128-54-7
• EC Number: 214-438-7

Properties

• Solubility: Slightly soluble (1.5 g/L) (25 ºC), Calc.^*
• Density: 1.04±0.1 g/cm³ (20 ºC 760 Torr), Calc.^*
• Melting point: 150 ºC^**
• Boiling point: 255-256 ºC (752 Torr)^***
• Refractive index: 1.5870 (589.3 nm 20 ºC)^****
• Flash point: 108.0±18.7 ºC, Calc.^*

^* Calculated using Advanced Chemistry Development (ACD/Labs) Software V11.02 (©1994-2014 ACD/Labs)

^** Stoermer, R.; Justus Liebigs Annalen der Chemie 1907, V352, P322-43.

^*** Nesmeyanov, A. N.; Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya 1950, P350-6.

^**** Bozhenkov, G. V.; Russian Journal of Organic Chemistry 2008, V44(7), P1014-1023.

Safety Data

Hazard Classification

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