Ponceau S
[CAS# 6226-79-5]

Identification

• Classification: Biochemical >> Biochemical reagent >> Biological dye
• Name: Ponceau S
• Synonyms: C.I. 27195; 3-Hydroxy-4-[2-sulfo-4-(4-sulfophenylazo)phenylazo]-2,7-naphthalenedisulfonic acid tetrasodium salt
• Molecular Formula: C₂₂H₁₂N₄Na₄O₁₃S₄
• Molecular Weight: 760.57
• CAS Registry Number: 6226-79-5
• EC Number: 228-319-2

Properties

• Water solubility: 10 g/L

Safety Data

• Hazard Symbols: Xi
• Risk Codes: R36/37/38
• Safety Description: S26;S37/39

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
Specific target organ toxicity - single exposure	STOT SE	3	H336