Solvent Yellow 72
[CAS# 4645-07-2]

Identification

• Name: Solvent Yellow 72
• Synonyms: C.I. 127450; 2,4-Dihydro-4-[(2-methoxyphenyl)azo]-5-methyl-2-phenyl-3H-pyrazol-3-one
• Molecular Formula: C₁₇H₁₆N₄O₂
• Molecular Weight: 308.33
• CAS Registry Number: 4645-07-2 (61813-98-7)
• EC Number: 225-074-3

Properties

• Density: 1.24
• Melting point: 166-167 °C

Safety Data

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Eye irritation	Eye Irrit.	2	H319
Skin irritation	Skin Irrit.	2	H315
Acute hazardous to the aquatic environment	Aquatic Acute	1	H400
Acute toxicity	Acute Tox.	4	H302
Specific target organ toxicity - single exposure	STOT SE	3	H335