p-Toluenesulfonic Acid (p-TSA)

Monohydrate | Acid Catalyst

Catalyst & Auxiliary

CAS No.	6192-52-5
Molecular Formula	CH₃C₆H₄SO₃H·H₂O
Molecular Weight	190.22 g/mol
Appearance	White to off-white crystalline solid, hygroscopic
Purity	≥98.5%
Boiling Point	~142 °C (dec.)
Density	1.24 g/cm³
Standard	Enterprise standard; Available on request

Chemical Inquiry Back to Chemicals

Chemical Description

p-Toluenesulfonic acid monohydrate (PTSA) is a strong, non-oxidizing organic acid widely used as an acid catalyst in organic synthesis. It is more stable and less corrosive than mineral acids, making it the preferred choice for esterification, condensation, and dehydration reactions. LUXI Chemical supplies high-purity PTSA monohydrate for pharmaceutical, fine chemical, and polymer manufacturing.