Tetramethylammonium hydroxide pentahydrate is a quaternary ammonium salt that appears as a colorless solid or solution. It is commonly used as a structure directing agent in industrial chemical processes.
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Tetrakis(N,N,N-trimethylmethanaminium) orthosilicate
Silicate source for chemical synthesis
Tetramethylammonium bicarbonate
research compound
Tetramethylammonium chloride
Clay stabilizer and chemical intermediate
Tetramethylammonium hydroxide
Semiconductor photoresist developer and etchant
N-Ethyl-N,N-dimethylcyclohexanaminium hydroxide
structure directing agent
Tetraethylphosphanium hydroxide
structure directing agent
(2R,6S)-1,1-Diethyl-2,6-dimethylpiperidin-1-ium hydroxide
structure directing agent
1,1,3,5-Tetramethylpiperidin-1-ium hydroxide
structure directing agent
The international HS code for Tetramethylammonium hydroxide pentahydrate (CAS 10424-65-4) is 2923.90.
2923.90
2923 90 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
tetramethylazanium;hydroxide;pentahydrate
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C[N+](C)(C)C.O.O.O.O.O.[OH-]
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