Back to ProductsRequest Quote
Catalysts & SpecialtiesCAS 104-15-4
p-TSA
Para Toluene Sulphonic Acid
Molecular Formula
C₇H₈O₃S
Molecular Weight
172.20 g/mol
Appearance
White to off-white crystalline powder
CAS Number
104-15-4
Synonyms:4-Toluenesulphonic acidPTSATosic acidp-TSA
Specifications
| Parameter | Specification |
|---|---|
| Appearance | White to off-white crystalline powder |
| Purity | Min. 98.5% (anhydrous basis) |
| Free H₂SO₄ | Max. 0.5% |
| Moisture (monohydrate) | 8.5–9.5% |
| Molecular Formula | C₇H₈O₃S |
| Molecular Weight | 172.20 g/mol |
Quality & Testing Methods
Acid-Base Titration
Purity — titrated with 0.1N NaOH, phenolphthalein indicator
Karl Fischer Titration
Moisture determination per ASTM E203
Applications
Green acid catalyst (pharma, resin, coatings)
Esterification reactions
Dye auxiliary manufacturing
Organic synthesis catalyst
Packaging
- 25 kg HDPE bags
- 50 kg fibre drums
- Jumbo bags (500/1000 kg)
Labelling: GHS/REACH compliant labelling. Export packaging available.
Incoterms: FOB Dahej/Nhava Sheva, CIF, CFR available.
Shipping
- Export to EU, USA, South-East Asia, Middle East, Africa
- GHS-compliant Safety Data Sheets (SDS) provided
- UN dangerous goods classification as applicable
- COA (Certificate of Analysis) with every shipment
Safety Information
Signal Word
Danger
Hazard Classification
Corrosive (Skin/Eye), Irritant
GHS Pictograms
GHS05 – CorrosionGHS07 – Exclamation Mark
Storage Conditions
Store in cool, dry area. Keep containers tightly closed. Avoid contact with strong bases.
Interested in p-TSA?
Get a competitive quote with COA, technical specifications and shipping details. Our export team responds within 24 business hours.
Request Quote for p-TSA