Thiodipropionic acid (TDPA), chemically known as 3,3′-thiodipropionic acid (CAS 111-17-1), is a critical specialty chemical serving as a fundamental building block for sulfur-based antioxidants and stabilizers in polymer industries. With a global production capacity of approximately 50,000 metric tons annually​ and over 1,200 international shipments recorded between March 2023 and February 2024, TDPA represents a vital link in the supply chains of plastics, rubber, lubricants, and personal care products worldwide . This comprehensive guide analyzes the global procurement landscape, identifying key buyer categories, regional trade patterns, and strategic insights for stakeholders navigating the thiodipropionic acid supply chain. 1. Market Overview: Production Capacity and Global Trade Dynamics The thiodipropionic acid market…