Sodium 2-diazo-1-naphthol-5-sulfonate
[CAS# 2657-00-3]

Identification

• Classification: Chemical reagent >> Organic reagent >> Sulfonate / sulfinate
• Name: Sodium 2-diazo-1-naphthol-5-sulfonate
• Synonyms: 2-Diazo-1-naphthol-5-sulfonic acid sodium salt; 6-Diazo-5-hydroxy-1-naphthalenesulfonic acid sodium salt; 6-Diazo-5,6-dihydro-5-oxonaphthalene-1-sulfonic acid sodium salt
• Molecular Formula: C₁₀H₅N₂NaO₄S
• Molecular Weight: 272.21
• CAS Registry Number: 2657-00-3
• EC Number: 220-189-5

Safety Data

• Hazard Symbols: F
• Risk Codes: R11
• Safety Description: S16;S26;S33;S36

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Self-reactive substances or mixtures	Self-react.	D	H242
Eye irritation	Eye Irrit.	2	H319
Chronic hazardous to the aquatic environment	Aquatic Chronic	3	H412
Skin sensitization	Skin Sens.	1	H317
Skin irritation	Skin Irrit.	2	H315

• Transport Information: UN 3226
• Hazardous Chemical?: Yes