Crotonic acid, a C4 unsaturated carboxylic acid, is a pivotal intermediate for manufacturing polyester resins, acrylic polymers, and pharmaceutical intermediates, making it essential for high‑performance coatings, adhesives, and specialty chemicals. The Industrial Grade Crotonic Acid market size reached approximately USD 145 million in 2025, and industry analysts project a CAGR of 5.2% through the 2026‑2033 market forecast, reflecting robust growth outlook driven by expanding polymer applications and tightening environmental standards that favor greener production pathways. The scope of this analysis covers global production, downstream usage, and regional supply‑chain dynamics for industrial‑grade grades, distinguishing them from specialty or pharmaceutical‑grade variants.