EC 200-882-9
Also known as TMAH.
chemXplore tracks 1 project producing tetramethylammonium hydroxide, of which one is active.
Of the active ones, 1 new construction.
New tetramethylammonium hydroxide plant will double capacity for photoresist developer supply; completion scheduled FY2027; groundbreaking June 19 in Pyeongtaek.
KRW 130 billion investment for a new TMAH plant on a 32,216 m² Poseung site to create a second production base and improve supply stability and logistics for semiconductor developers.
Targets >60% specialty by 2030; building a 500k t/yr compounding plant; creating hydrogen value chain—four fuel-cell plants (80MW) and 450‑bar H2 hub; expanding high-end copper foil and TMAH output.
Shifting from commodity petrochemicals, the company invests in specialty materials, hydrogen, and semiconductor solutions, while enhancing financial stability through strategic divestments.
Lotte Chemical presents sustainable, high-performance materials for mobility, recycling, and industrial applications at K 2025, aiming to expand in the European market.
