Tetramethylammonium Hydroxide CAS 75-59-2 TMAH

As a developer in the integrated circuit (IC) industry, liquid crystal display industry (TFT-LCD), and optoelectronics (LED) industry.

TMAH is an organic base. On the one hand, it has the same strong alkalinity as the inorganic base. On the other hand, it has its unique characteristics, that is, it will not leave metal ions during use, and it can be decomposed into trimethylamine gas and Methanol gas without leaving any traces, can be widely used in modern electronics industry. The main component of the developer is alkali. The original alkali used was inorganic alkali KOH. With the advancement of science and technology, the design and manufacture of integrated circuits need to meet various complex process conditions, and the requirements for chemical impurities are becoming more and more stringent. The developer used before is an inorganic alkali such as KOH. After developing, a large amount of water needs to be used to rinse the substrate. In the end, it cannot be guaranteed that K+ can be completely rinsed. Excessive residues of metal ions cannot meet some harsh process conditions. For example, the number of electronic components in a single manufacturing unit is increasing, and the line width is becoming narrower and narrower, which has become a bottleneck that cannot be ignored restricting the development of the electronics industry. TMAH It just overcomes the shortcomings of KOH, no metal ions, and no residue after pyrolysis.

Therefore, TMAH is currently the most commonly used developer with the best performance. It has replaced inorganic alkalis (KOH, NAOH) and is widely used in the integrated circuit (IC) industry, liquid crystal display industry (TFT-LCD), and optoelectronics industry.

Industrial catalysts (phase-transfer catalysts, which can help reactants transfer from one phase to another phase that can react, thereby speeding up the reaction rate of heterogeneous systems. Generally, there are phase-transfer catalyzed reactions, and there are Aqueous solution and organic solvent are two-phase, ionic reactant is often soluble in water phase, insoluble in organic phase, and organic substrate is soluble in organic solvent. When there is no phase transfer catalyst, the two phases are separated from each other, several The reactants cannot be contacted, and the reaction proceeds very slowly. The existence of the phase transfer catalyst can combine with the ions in the water phase, and use its own affinity to the organic solvent to transfer the reactants in the water phase to the organic phase , prompting the reaction to occur).

As a quaternary ammonium base, TMAH is an efficient catalyst in the field of organic silicon and rubber antioxidants.