2-Diazo-1-naphthol-4-sulfonic acid
[CAS# 20680-48-2]

Identification

• Name: 2-Diazo-1-naphthol-4-sulfonic acid
• Synonyms: 3-Diazo-3,4-dihydro-4-oxonaphthalene-1-sulphonic acid
• Molecular Formula: C₁₀H₆N₂O₄S
• Molecular Weight: 250.23
• CAS Registry Number: 20680-48-2
• EC Number: 243-965-5

Safety Data

• Hazard Symbols: F;Xi
• Risk Statements: R11;R36/37/38
• Safety Statements: S16;S26;S36/37

Hazard Classification

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

• Transport Information: UN 3226