1. Product Overview & Specifications

Monosodium-5-Sulfoisophthalate (CAS 6362-79-4) is a sulfonated aromatic compound with the molecular formula C₈H₅NaO₇S and a molecular weight of 268.18 g/mol. It appears as a white crystalline powder with ≥99% purity in its premium grade.

2. Key Applications & Industrial Uses

Primary Applications:

• Polyester Modification: Acts as a third monomer in PET production to enhance dye affinity and hydrophilicity.
• Pharmaceutical Intermediates: Used in synthesizing anti-inflammatory and cardiovascular drugs.
• Specialty Polymers: Improves ionic characteristics in water-soluble resins.
• Surfactant Production: Serves as a precursor for high-performance sulfonate surfactants.

3. Performance Advantages

• Superior thermal stability (>300°C melting point)
• Full water solubility at 25°C
• APHA color index ≤15 (5% aqueous solution)
• Low chloride content (≤8 ppm)

4. Real-World Use Cases

Case 1: Textile Manufacturing

A leading polyester fiber producer achieved 40% improvement in dye uptake efficiency by incorporating 0.8% w/w of our premium-grade product into their PET polymerization process.

Case 2: Drug Synthesis

Pharmaceutical researchers utilized the compound as a key intermediate in developing a novel anti-hypertensive medication, reducing synthesis steps by 30% compared to traditional methods.

5. Client Success Stories

Client A: Global Polymer Solutions

Increased production efficiency by 22% through optimized ionic monomer ratios using our standardized material batches.

Client B: Specialty Chemicals Inc.

Developed eco-friendly surfactants meeting EU REACH compliance standards using our low-sulfate variant.