4-Toluene Sulfonic Acid Monohydrate is a strong organic acid widely used as a catalyst, intermediate, and acid reagent in pharmaceutical, resin, and dye manufacturing.
D.K. Pharmachem supplies high-purity, stable PTSA Monohydrate with export-compliant packaging for industrial and pharma sectors.
| Attribute | Details |
|---|---|
| CAS Number | 104-15-4 |
| Molecular Formula | C₇H₈O₃S·H₂O |
| Molecular Weight | 172.20 g/mol |
| Grade | Pharma / Industrial |
| Appearance | White crystalline powder |
| Assay | ≥98% |
| Packaging | HDPE drums |

Used in esterification, polymerization, and condensation reactions

Precursor in sulfonamide APIs

Improves curing and stability

Applied in colorant synthesis
As a WHO-GMP certified manufacturer, We are equipped for high-purity pharmaceutical intermediate production. Our 4-Toluene Sulfonic Acid (Monohydrate) manufacturing line is purpose-built for controlled synthesis, ensuring batch-to-batch consistency and compliance with international pharmacopoeial standards.
DK Pharmachem operates a dedicated WHO-GMP certified manufacturing facility in India, equipped for high-purity pharmaceutical intermediate production. Our 4-Toluene Sulfonic Acid (Monohydrate) manufacturing line is purpose-built for controlled synthesis, ensuring batch-to-batch consistency and compliance with international pharmacopoeial standards.
Facility highlights to list as bullet points below this paragraph:
As a bulk 4-Toluene Sulfonic Acid (Monohydrate) supplier in India, DK Pharmachem maintains scalable production capacity to meet both regular and high-volume procurement requirements. Our supply chain is designed to support uninterrupted manufacturing operations for our clients.
Supply capabilities to list as bullet points:
Every batch of 4-Toluene Sulfonic Acid (Monohydrate) manufactured at our India facility is backed by:
As one of the established 4-Toluene Sulfonic Acid (Monohydrate) manufacturers in India, we ensure uninterrupted supply chains and strict adherence to global quality standards.
DK Pharmachem serves clients across pharmaceuticals, agrochemicals, water treatment, and contract manufacturing sectors. We maintain consistent stock availability to support both spot orders and long-term supply agreements.
As an established 4-Toluene Sulfonic Acid (Monohydrate) exporter, we ship to regulated markets including Europe, North America, Southeast Asia, and the Middle East. All export shipments are accompanied by full documentation - COA, MSDS, EDMF, and country-specific regulatory filings where required.
Partner with DK Pharmachem for consistent pharmaceutical-grade quality, reliable bulk supply, and comprehensive regulatory documentation. Get in touch with our team today to discuss your requirements, timelines, and pricing.
4-Toluene Sulfonic Acid (Monohydrate) powder is packed to maintain stability and ensure safe handling throughout the supply chain.
Choosing the right sourcing partner for 4-Toluene Sulfonic Acid (Monohydrate) means evaluating quality, regulatory standing, supply reliability, and long-term partnership capability. DK Pharmachem has been a trusted name in pharmaceutical intermediates for over four decades, built on a foundation of manufacturing excellence and customer trust.

Direct Manufacturer, Not a Trader

WHO-GMP Certified Manufacturing

EDMF Registration Support

EP/BP Compliant Product Quality

Comprehensive Technical & Export Documentation

Bulk Supply & Long-Term Contract Support
Find answers to common questions about Chloramine-T products and services
4-Toluene Sulfonic Acid Monohydrate (PTSA Monohydrate) is used as a catalyst in esterification, polymerization, and condensation reactions, and as a pharmaceutical intermediate, notably as a precursor in sulfonamide active pharmaceutical ingredients (APIs). It is also applied in resin and adhesive curing and in dye and pigment synthesis. Procurement teams typically source it for pharmaceutical, resin, and specialty chemical manufacturing.
DK PharmaChem manufactures 4-Toluene Sulfonic Acid Monohydrate to European Pharmacopoeia (EP) and British Pharmacopoeia (BP) compliance standards. The product is supplied in pharma and industrial grades, with an assay of 98% minimum. Each batch is tested against these specifications before dispatch.
Yes, DK PharmaChem manufactures 4-Toluene Sulfonic Acid Monohydrate at a WHO-GMP (World Health Organization Good Manufacturing Practice) certified facility in India. The manufacturing line is purpose-built for controlled synthesis, with in-house HPLC (High-Performance Liquid Chromatography) analytical quality control and validated cleaning and production procedures. This ensures batch-to-batch consistency for pharmaceutical intermediate buyers.
DK PharmaChem provides a Certificate of Analysis (CoA) with every batch, along with a Material Safety Data Sheet (MSDS) available on request. The product also carries European Drug Master File (EDMF) registration, and export shipments include country-specific regulatory filings where required. This documentation supports buyer-side QA and regulatory review before purchase.
The CAS (Chemical Abstracts Service) number for 4-Toluene Sulfonic Acid Monohydrate is 104-15-4. Its molecular formula is C7H8O3S·H2O, with a molecular weight of 172.20 g/mol. It appears as a white crystalline powder.
DK PharmaChem packs 4-Toluene Sulfonic Acid Monohydrate in HDPE (High-Density Polyethylene) drums and fiber drums with inner liners, with bulk packaging options also available. Packaging is designed to maintain product stability and ensure safe handling throughout export shipment. Buyers can request specific drum sizes or bulk formats based on order volume.
International buyers can request a quote by contacting DK PharmaChem’s team through the enquiry form on the product page or by email. The team responds with pricing, documentation, and lead time details based on the buyer’s order volume and destination country. Sample and technical queries can be raised at the same stage before finalizing an order.
Yes, DK PharmaChem exports 4-Toluene Sulfonic Acid Monohydrate to regulated markets across Europe, North America, Southeast Asia, and the Middle East. All export shipments are accompanied by full documentation, including CoA, MSDS, and EDMF where applicable. The company maintains consistent stock availability to support both spot orders and long-term supply agreements.