CAS 75-59-2: Tetramethylammonium hydroxide

Description: Tetramethylammonium hydroxide (TMAH) is a quaternary ammonium compound with the chemical formula (CH₃)₄NOH. It is typically encountered as a colorless, viscous liquid or as a solid in its pure form. TMAH is highly soluble in water and polar organic solvents, making it a versatile reagent in various chemical applications. It acts as a strong base due to the presence of the hydroxide ion, which allows it to readily deprotonate acids. TMAH is commonly used in the semiconductor industry for photoresist development and as a catalyst in organic synthesis. Additionally, it can serve as a surfactant and is utilized in various laboratory applications. However, it is important to handle TMAH with care, as it is toxic and can cause severe skin and eye irritation. Proper safety measures, including the use of personal protective equipment, are essential when working with this compound. Its stability and reactivity make it a valuable tool in both industrial and research settings.

Formula: C₄H₁₂N·HO

InChI: InChI=1S/C4H12N.H2O/c1-5(2,3)4;/h1-4H3;1H2/q+1;/p-1

InChI key: InChIKey=WGTYBPLFGIVFAS-UHFFFAOYSA-M

SMILES: [OH-].C[N+](C)(C)C

Synonyms:

• Ammonium Hydroxide, Tetramethyl-
• Ammonium, tetramethyl-, hydroxide
• Ar 300-49
• Az 300Mif
• Az 726
• Az 726Mif
• Az-Mif 300
• Cd 26
• Cpd 18
• Hidroxido De Tetrametilamonio
• Hydroxyde de tetramethylammonium
• Idrossido di tetrametilammonio
• L 09658
• Ldd 26
• Ldd 26W
• Megaposit CD 14
• Megaposit MF 24A
• Methanaminium, N,N,N-trimethyl-, hydroxide (1:1)
• Mf 24A
• Mf 319
• Mf 321
• Mf-Cd 26
• Microposit CD 26
• Microposit MF 319
• Microposit MF 321
• Microposit MF-CD 26
• Mif 726
• Nmd 3
• Nmw-W
• Ocg 934
• Ocg 945
• Ocg-Opd 262
• Opd 262
• Opd 5262
• Photoresist ma-D 525
• Prs 2000
• RD 6 (developer)
• Tetramethylammonium Hydroxide
• Tetramethylammoniumhydroxid
• Tmah
• Tmah 25
• Tokuso SD 20
• Tokuso SD 25
• Un3423
• テトラメチルアンモニウム=ヒドロキシド
• nmd3
• hydroxydedetetramethylammonium
• n,n,n-trimethyl-methanaminiuhydroxide
• N,N,N-Trimethylmethanaminium Hydroxide
• Methanaminium, N,N,N-trimethyl-, hydroxide
• megapositcd14
• Methanaminium,N,N,N-trimethyl-,hydroxide
• Tetramethyl ammonium hydroxide

Tetramethylammonium Hydroxide 10% Aq. Solution pure

CAS: 75-59-2

• Formula: C₄H₁₃NO
• Purity: ~10%
• Color and Shape: Clear, Colourless to pale yellow tinted, Liquid
• Molecular weight: 91.15

Tetramethylammonium Hydroxide 25% in methanol pure

CAS: 75-59-2

• Formula: C₄H₁₃NO
• Purity: ~25%
• Color and Shape: Clear, Pale yellow, Liquid
• Molecular weight: 91.15