Tetramethylammonium hydroxide pentahydrate

• CAT Number: M064925
• CAS Number: 10424-65-4
• Molecular Formula: C4H23NO6
• Molecular Weight: 181.229
• Purity: ≥95%
• Storage: Store at -20°C
• IUPAC Name: tetramethylazanium;hydroxide;pentahydrate
• InChI: InChI=1S/C4H12N.6H2O/c1-5(2,3)4;;;;;;/h1-4H3;6*1H2/q+1;;;;;;/p-1
• InChIKey: MYXKPFMQWULLOH-UHFFFAOYSA-M
• SMILES: C[N+](C)(C)C.O.O.O.O.O.[OH-]

Tetramethylammonium hydroxide pentahydrate (TMAH) is a quaternary ammonium salt with strong basic properties, commonly used in various chemical and industrial applications. In its pentahydrate form, TMAH is highly soluble in water and is often utilized as a developer in photolithography processes, especially in the manufacturing of semiconductors and printed circuit boards. It is also employed as a reagent in organic synthesis, particularly for deprotonation and nucleophilic substitution reactions. Due to its strong alkalinity, TMAH must be handled with care, as it can be corrosive and hazardous.