Tiron
[CAS# 149-45-1]

Identification

• Classification: Organic raw materials >> Hydrocarbon compounds and their derivatives >> Hydrocarbon sulfonate
• Name: Tiron
• Synonyms: 1,2-Dihydroxybenzene-3,5-disulfonic acid disodium salt hydrate; Pyrocatechol-3,5-disulfonic acid disodium salt hydrate; Disodium 4,5-dihydroxy-1,3-benzenedisulfonate hydrate
• Molecular Formula: C₆H₄Na₂O₈S₂.H₂O
• Molecular Weight: 332.20
• CAS Registry Number: 149-45-1
• EC Number: 205-741-5

Properties

• Melting point: 300 °C
• Water solubility: soluble

Safety Data

• Hazard Symbols: Xi
• Risk Statements: R36/37/38
• Safety Statements: 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
Acute hazardous to the aquatic environment	Aquatic Acute	1	H400
Chronic hazardous to the aquatic environment	Aquatic Chronic	1	H410
Acute toxicity	Acute Tox.	4	H312
Skin sensitization	Skin Sens.	1	H317