Xylenol blue
[CAS# 125-31-5]

Identification

• Classification: Biochemical >> Biochemical reagent >> Biological dye
• Name: Xylenol blue
• Synonyms: 1,4-Dimethyl-5-hydroxybenzenesulfonphthalein; p-Xylenesulfonephthalein; p-Xylenol blue; p-Xylenolsulfonphthalein
• Molecular Formula: C₂₃H₂₂O₅S
• Molecular Weight: 410.48
• CAS Registry Number: 125-31-5
• EC Number: 204-736-5

Properties

• Solubility: Very slightly soluble (0.18 g/L) (25 ºC), Calc.^*
• Density: 1.346±0.06 g/cm³ (20 ºC 760 Torr), Calc.^*

^* Calculated using Advanced Chemistry Development (ACD/Labs) Software V11.02 (©1994-2013 ACD/Labs)

Safety Data

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

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