High-Purity p-Toluenesulfonic Acid (PTSA) Manufacturer & Catalyst Supplier | CAS 104-15-4
Name: P-Toluenesulfonic Acid
Cas: 104-15-4
Purity: 99%
MOQ: 1KG
Directory Guidance on P-Toluenesulfonic Acid
Chemical Structure
Basic Info
| Melting point | 106~107℃ |
| Boiling point | 116 °C |
| density | 1.07 |
| vapor pressure | 69.8Pa at 20℃ |
| refractive index | 1.3825-1.3845 |
| Fp | 41 °C |
| storage temp. | Inert atmosphere,Room Temperature |
| solubility | DMSO (Slightly), Methanol (Slightly) |
| form | Solution |
| pka | -0.43±0.50(Predicted) |
| color | Clear colorless to light yellow |
| Odor | pungent odor |
| Water Solubility | soluble |
To guarantee seamless international trade and full regulatory compliance across North American, European, and Asia-Pacific markets, our production facilities and supply chains adhere strictly to verified global standards:
ISO 9001:2015 Quality Management: Every production batch is processed under monitored environmental conditions to maintain uniform particle size, controlled moisture levels, and tight acidity tolerance.
EU REACH Registered / Compliant: Full documentation support is provided for European buyers requiring compliance with chemical hazard registration and downstream user obligations.
GHS-Compliant Documentation: Orders are accompanied by up-to-date Safety Data Sheets (SDS) and Certificates of Analysis (CoA) corresponding directly to the batch number shipped.
Packaging & Transport Compliance: Classified under UN 2585 (Alkylsulfonic acids, solid, Class 8 Corrosive), our packaging meets international dangerous goods regulations (IMDG / IATA), utilizing moisture-proof inner liners within reinforced fiber drums or bulk bags.
Quality assurance at our manufacturing plant goes beyond final packaging inspection. We implement a rigorous, three-stage internal testing protocol to deliver batch-to-batch consistency:
Raw Material Pre-Screening: Toluene raw materials undergo chromatographic purity checks prior to sulfonation to restrict residual isomers and inorganic impurities.
In-Process Analytical Testing:
Potentiometric Titration: Accurately measures total acidity and ensures free sulfuric acid content remains below strict thresholds (≤ 0.5%), preventing unwanted discoloration in downstream resin curing.
High-Performance Liquid Chromatography (HPLC): Verifies compound purity and detects trace organic byproducts.
Karl Fischer Titration: Monitors accurate hydration levels to ensure predictable catalytic reaction rates during industrial application.
Pre-Shipment Retention Sampling: Representative samples from every lot are sealed and kept in our analytical lab for 24 months, enabling full traceability in case of technical inquiries.
Product Packaging
Organic Synthesis & Chemical Catalysis: Serves as an acid catalyst for esterification (such as plasticizers and ester solvents), condensation reactions, and protective group chemistry. Its solubility in organic media simplifies recovery and reaction control.
Resin & Coating Hardening Agent: Functions as an effective curing catalyst in furan resins, amino resins, and foundry sand binder systems. It enables rapid room-temperature curing without degrading the aesthetic appearance of the final coating layer.
Pharmaceutical Intermediates Manufacturing: Acts as a reagent and process acid in synthesizing key active pharmaceutical ingredients (APIs), including specific antibiotics and custom heterocyclic compounds.
Agrochemicals & Fine Chemicals: Utilized in the production routes of active crop-protection chemicals, dyes, pigment intermediates, and photographic chemicals.
FAQ
Answer: PTSA monohydrate contains one bound water molecule crystal (C7H8O3S) and is the standard, stable form used in most industrial catalysis and curing applications. Anhydrous PTSA is highly hygroscopic and is selected specifically for moisture‑sensitive organic reactions where water must be strictly excluded.
Answer: PTSA should be stored in a cool, dry, well‑ventilated warehouse, kept in tightly closed original containers away from strong oxidizing agents, strong bases, and moisture. Proper storage preserves catalytic activity and physical flowability for up to 24 months.
Answer: Yes. Standard packaging includes 25 kg woven bags with PE liners, 25 kg fiber drums, or 500 kg/1000 kg bulk super‑sacks. Palletized shipments with moisture‑shrink wrapping are standard for ocean freight shipments.
Related References
Pubchem-P-Toluenesulfonic Acid
Chemicalbook-P-Toluenesulfonic Acid
Manufacturer of P-Toluenesulfonic Acid
1. For products ≤50kg, we recommend using express delivery, which is usually called DDU service (discounted, convenient).
2. For products ≤500kg, we generally recommend air freight, which is usually called FOB, CFR or CIF service (fast and efficient).
3. For products >500kg, we generally recommend shipping by sea, which is usually called FOB, CFR or CIF service (economical, safe).
4. For high-value products, please choose air or express to ensure the safety of product transportation.
