Thorin
[CAS# 3688-92-4]

Identification

• Classification: Chemical reagent >> Organic reagent >> Azo, diazonium compound
• Name: Thorin
• Synonyms: Thorin I; Thoronol; 4-[(2-Arsonophenyl)azo]-3-hydroxy-2,7-naphthalenedisulfonic acid disodium salt
• Molecular Formula: C₁₆H₁₁AsN₂O₁₀S₂^.₂Na
• Molecular Weight: 576.30
• CAS Registry Number: 3688-92-4
• EC Number: 222-993-1

Safety Data

• Hazard Symbols: T;N
• Risk Codes: R23/25;R50/53
• Safety Description: S20/21;S28;S45;S60;S61

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Chronic hazardous to the aquatic environment	Aquatic Chronic	1	H410
Acute toxicity	Acute Tox.	3	H301
Acute toxicity	Acute Tox.	3	H331
Acute hazardous to the aquatic environment	Aquatic Acute	1	H400
Carcinogenicity	Carc.	1A	H350

• Transport Information: UN 3465 6.1 / PGII