p-Toluenesulfonic acid
[CAS# 104-15-4]

Identification

• Classification: Organic raw materials >> Carboxylic compounds and derivatives >> Halogenation, sulfonation, nitration or nitrosation of carboxylic acids
• Name: p-Toluenesulfonic acid
• Synonyms: 4-Methylbenzenesulfonic acid; Tosic acid; PTSA
• Molecular Formula: C₇H₈O₃S
• Molecular Weight: 172.20
• CAS Registry Number: 104-15-4
• EC Number: 203-180-0

Properties

• Density: 1.07
• Boiling point: 116 °C
• Refractive index: 1.3825-1.3845
• Flash point: 41 °C
• Water solubility: soluble

Safety Data

• Hazard Symbols: GHS07 Warning
• Risk Statements: H335-H315-H319
• Safety Statements: S23;S26;S45

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Specific target organ toxicity - single exposure	STOT SE	3	H335
Eye irritation	Eye Irrit.	2	H319
Skin irritation	Skin Irrit.	2	H315
Serious eye damage	Eye Dam.	1	H318
Skin corrosion	Skin Corr.	1C	H314
Skin corrosion	Skin Corr.	1B	H314
Acute toxicity	Acute Tox.	4	H302
Specific target organ toxicity - single exposure	STOT SE	3	H370
Substances or mixtures corrosive to metals	Met. Corr.	1	H290
Substances or mixtures which in contact with water emit flammable gases	Water-react.	1	H260
Reproductive toxicity	Repr.	1B	H360F
Reproductive toxicity	Repr.	1B	H360
Skin corrosion	Skin Corr.	1A	H314