2,2'-Dihydroxyazobenzene
[CAS# 2050-14-8]

Identification

• Classification: Chemical reagent >> Organic reagent >> Azo, diazonium compound
• Name: 2,2'-Dihydroxyazobenzene
• Synonyms: 2,2'-Azophenol; 2,2'-Diazenediyldiphenol; Azobenzene-2,2'-diol; Azobis(2-hydroxyphenyl); o,o'-Dihydroxyazobenzene; o-Azophenol
• Molecular Formula: C₁₂H₁₀N₂O₂
• Molecular Weight: 214.22
• CAS Registry Number: 2050-14-8
• EC Number: 218-082-3

Properties

• Solubility: Very slightly soluble (0.12 g/L) (25 ºC), Calc.^*
• Density: 1.24±0.1 g/cm³ (20 ºC 760 Torr), Calc.^*
• Melting point: 174-175 ºC^**

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

^** Srinivasa, G. R.; Tetrahedron Letters 2003, V44(31), P5835-5837.

Safety Data

• Hazard Symbols: Xi
• Risk Codes: R36/37/38
• Safety Description: S26;S36/37/39

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