The ammonium cation is a positively charged polyatomic ion with the chemical formula NH + 4. It is formed by the protonation of ammonia (NH 3). Ammonium is also a general name for positively charged or protonated substituted amines and quaternary ammonium cations (NR + 4), where one or more hydrogen atoms are replaced by organic groups.
Tetramethylammonium hydroxide does not contain chromophores that absorb at wavelengths >290 nm and, therefore, is not expected to be susceptible to direct photolysis by sunlight. If released to soil, tetramethylammonium hydroxide is expected to have very high mobility based upon an estimated Koc of 8.
Tetrabutylammonium hydroxide is the chemical compound with the formula (C 4 H 9) 4 NOH, abbreviated Bu 4 NOH with the acronym TBAOH or TBAH. This species is employed as a solution in water or alcohols. It is a common base in organic chemistry. Relative to more conventional inorganic bases, such as KOH and NaOH, Bu 4 NOH is more soluble in.
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