25% Tetramethylammonium hydroxide / TMAH CAS 75-59-2

In industry, tetramethylammonium hydroxide cas:75-59-2 is generally prepared using tetramethylammonium salt and hydroxide as raw materials. Common preparation methods include precipitation, alkali displacement, bipolar membrane electrodialysis, electrolysis, and ion membrane electrolysis, and can be purified using electrodialysis and ion exchange resin methods. Tetramethylammonium hydroxide(TMAH) is widely used in the semiconductor field, mainly as a photolithography developer for printed circuit boards and a cleaning agent in microelectronic chip manufacturing. It also has a wide range of applications in industrial and analytical fields, such as organic synthesis reagents, surfactants, catalysts, corrosion inhibitors, and methylation solvents. Tetramethylammonium hydroxide(TMAOH) cas:75-59-2 is toxic. When it comes into contact with the skin or enters the body through the mouth and nose, it can inhibit the respiratory muscle group, causing respiratory muscle paralysis, leading to brain hypoxia and organ failure and death; The estimated oral lethal dose for adults is 250-1000mg. The combustion of tetramethylammonium hydroxide releases toxic nitrogen oxides and ammonia fumes, which are corrosive to the skin and cornea, affecting the human respiratory system and even causing death.