The recovered tetraalkylammonium salt can be made into tetraalkylammonium hydroxide by electrolysis.
The invention concerns a novel method for preparing lysergic acid by isomerization of paspalic acid using a tetraalkylammonium hydroxide.
A tetraalkyl orthosilicate (TAOS) and specified alkoxysilane (AS) are hydrolyzed in the presence of a tetraalkylammonium hydroxide (TAAOH), thereby obtaining a liquid composition containing a silicon compound.
The etchant comprises a C4 or lower aliphatic amino alcohol containing an amino or imino group and a hydroxyl group in the molecule and an aqueous solution of a tetraalkylammonium hydroxide.
In the method, waste water containing tetraalkylammonium hydroxide is subjected to an anaerobic treatment.
Requêtes fréquentes français :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
Requêtes fréquentes anglais :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
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