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p-Toluenesulfonic Acid (PTSA)

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p-Toluenesulfonic Acid (PTSA)
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p-Toluenesulfonic Acid (PTSA)

Molekulyar formulC7H8O3S CAS104-15-4 Molekulyar kütlə172.20 g/mol
SinonimlərPTSA, Tosic acid, 4-Methylbenzenesulfonic acid
Safety & Hazards (GHS) Warning
Irritant Irritant

⚠️ For information only; not a substitute for the official Safety Data Sheet (SDS).

p-Toluenesulfonic Acid (PTSA) is a strong organic acid supplied as white crystals. It is widely used as an acid catalyst.
- Catalyst: Acid catalyst for esterification and resin curing. - Resins: Curing catalyst for amino, furan and phenolic resins. - Pharmaceuticals: Intermediate and salt-forming agent. - Electroplating: Additive in plating baths.
AppearanceMonoclinic leaflets or prisms
Molecular FormulaC7H8O3S
Molecular Weight172.20 g/mol
Melting Point106–107 °C
Boiling Point140 °C at 20 mmHg
SolubilityAbout 67 g/100 mL water; soluble in alcohol and ether
Flash Point184 °C (closed cup)
IUPAC Name4-methylbenzenesulfonic acid
Molekulyar formulC7H8O3S
Molekulyar kütlə172.20 g/mol
SMILESCC1=CC=C(C=C1)S(=O)(=O)O
InChIKeyJOXIMZWYDAKGHI-UHFFFAOYSA-N
  • H315 Causes skin irritation
  • H319 Causes serious eye irritation
  • H335 May cause respiratory irritation

⚠️ For information only; not a substitute for the official SDS.

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