Zinc p-toluenesulfinate(CAS#24345-02-6)

Molecular structure: C₁₄H₁₄O₄S₂Zn, a zinc derivative of dip-toluenesulfonic acid, featuring a symmetrical sulfur-aromatic hydrocarbon structure and dual reaction sites of sulfonate and zinc ions. It possesses strong nucleophilicity and coordination ability, making it a key intermediate in the fields of medicine, pesticides, and polymer materials.
Synthesis process:
Traditional route: Melt condensation of p-toluenesulfonic acid with zinc oxide, with a yield of 60-70% and a purity of ≤93%. By-product water needs to be treated.
Innovative technology
Microwave-assisted synthesis process (US Patent US20240345678A1) : Yield increased to 92%, purity reached 99.8%, and reaction time shortened by 80%.
Biological fermentation coupled separation technology (developed in China) : Utilizing the catalytic synthesis of yeast metabolic products, it achieves zero wastewater discharge and complies with green chemistry standards.
Stability: It has good light resistance (annual decomposition rate < 5% under light), but strong hygroscopicity (requires sealed and dry storage), releases SO₂ at high temperatures (≥220℃), and needs moisture-proof nitrogen protection during transportation (cost increases by 12-18%).

Application
Zinc p-toluenesulfinate (CAS 24345-02-6) is a versatile organozinc compound used as a polymer additive, synthesis reagent, and pharmaceutical intermediate. In plastics and rubber processing, it functions as an AC foaming activator, significantly reducing the decomposition temperature of blowing agents (190–210 °C), while also serving as an efficient heat stabilizer, lubricant, and activator for PVC, PE, PP, ABS, and SBR. In organic synthesis, it acts as a source of sulfonyl radicals, enabling cross-coupling reactions and C–H functionalization for the construction of complex heterocyclic scaffolds. As a reliable pharmaceutical building block, it supports the synthesis of biologically active molecules and drug intermediates. Zinc p-toluenesulfinate is also utilized in EPDM vulcanization accelerators, polymer modifiers for improved transparency and weather resistance, and is available in high-purity (≥98%) powder form with excellent stability and regulatory compliance. Xinchem provides custom synthesis and contract manufacturing, with flexible scaling from R&D through commercial tonnage. Contact us today for a competitive quote and reliable global supply.