The global trimethyl phosphate (TMP) market was valued at USD 350.75 million in 2025 and is projected to reach USD 512.60 million by 2033, growing at a CAGR of 4.86% from 2026 to 2033, according to Future Market Report. Trimethyl phosphate is a low-molecular-weight phosphate ester used as a flame-retardant solvent, plasticizer and intermediate in chemical synthesis and industrial applications.

Trimethyl phosphate serves as a flame-retardant solvent and plasticizer in coatings, adhesives and PVC, as a methylation intermediate in agrochemical and pharmaceutical synthesis, and in electrolyte and specialty applications. Demand is tied to the expansion of flame retardants and solvents, the growth of agrochemical and pharmaceutical intermediates, and the rising use of phosphate esters in industrial applications. China leads with a 27.8% market share, while flame retardants dominate the application segment, and Asia-Pacific is the fastest-growing region.

North America and Europe sustain steady demand in premium flame-retardant and specialty applications. Continued phosphate-ester growth positions trimethyl phosphate as a steadily advancing flame-retardant solvent.