1. Polymers & Resins

• Resin Toughening Agent: In thermosetting resins (epoxy, phenolic), PCBS improves impact strength and heat distortion resistance, which is critical for molded components in automotive or electrical housings.
• Flow Modifier in Thermoplastics: It functions as a flow aid and molding enhancer, reducing processing temperature and improving mold filling during injection molding.
• Modifier for High-Performance Engineering Plastics: Used in polyimides or polyamides to adjust flexibility and rigidity balance for aerospace, defense, and high-temperature tools.
• Softening Agent in Rubber Blends: PCBS improves processability and low-temperature flexibility in synthetic rubbers used for seals, gaskets, or hoses.
• Co-agent in Vulcanization: Used in sulfur vulcanization systems to modify crosslink density and tailor physical properties like compression set and resilience.

2. Paints, Coatings & Adhesives 

• Rheology Modifier in Reactive Adhesives: Enhances thixotropic properties and provides consistency to epoxy adhesives, allowing better vertical and overhead application.
• Heat Resistance Enhancer: PCBS increases bond strength retention at elevated temperatures, useful in high-performance adhesives for automotive or metal bonding.

3. Agrochemicals

• Intermediate for Sulfonamide-based Herbicides: Acts as a key building block in herbicide molecules, improving selectivity and metabolic resistance in crops.
• Precursor for Fungicidal Compounds: Used in the synthesis of systemic fungicides for cereals and fruits, where stability and water solubility are important.

4. Pharmaceuticals

• Intermediate in Sulfonamide Drug Synthesis: Though now limited, PCBS has been used as an intermediate in making sulfa antibiotics, especially in veterinary formulations.
• Precursor for Active Pharmaceutical Ingredients (APIs): Serves in research-scale synthesis of pharmacophores involving sulfonamide moieties for anti-bacterial or diuretic drug candidates.

5. Fabric Solutions

• Intermediate for Acid and Direct Dyes: PCBS is a starting material for azo and acid dyes, contributing to sulfonamide linkages that enhance dye fixation and brightness.
• Solubility Enhancer in Dye Formulations: Adds hydrophilic functionality to dyes, helping them dissolve better in aqueous textile dyeing systems.

 6. Performance Chemicals 

• Coupling Agent in Organic Synthesis: Widely used in amide and sulfonamide formation, especially in custom molecule design for pharma, agro, or dye research.
• Model Compound in Research Studies: Acts as a reference material for studying sulfonamide reaction pathways, nucleophilic substitution, or stability studies.

 7.  Construction 

• Additive for Thermoset Flooring Compounds: In epoxy-based floor coatings and grouts, PCBS helps improve flow, reduce brittleness, and increase chemical resistance.
• Modifier in Fire-Resistant Sealants: It enhances the flame retardancy of sealants used in building joints, cable trays, and ducts in fire-rated zones.