Picrolonic acid
[CAS# 550-74-3]

Identification

• Classification: Chemical reagent >> Organic reagent >> Fatty acid
• Name: Picrolonic acid
• Synonyms: NSC 5049; 2,4-Dihydro-5-methyl-4-nitro-2-(4-nitrophenyl)-3H-pyrazol-3-one
• Molecular Formula: C₁₀H₈N₄O₅
• Molecular Weight: 264.19
• CAS Registry Number: 550-74-3
• EC Number: 208-986-6

Properties

• Solubility: Very slightly soluble (0.34 g/L) (25 ºC), Calc.^*
• Density: 1.65±0.1 g/cm³ (20 ºC 760 Torr), Calc.^*
• Melting point: 124 ºC (decomp)^**

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

^** Yavors'kii, N. P.; Farmatsevtichnii Zhurnal (Kiev) 1964, V19(2), P65-9.

Safety Data

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Eye irritation	Eye Irrit.	2	H319
Skin irritation	Skin Irrit.	2	H315
Specific target organ toxicity - single exposure	STOT SE	3	H335
Self-reactive substances or mixtures	Self-react.	C	H242