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Tetramethylammonium hydroxide pentahydrate

CAS 10424-65-4: Tetramethylammonium hydroxide pentahydrate

Description:Tetramethylammonium hydroxide pentahydrate (TMAH) is a quaternary ammonium compound with the chemical formula (CH₃)₄NOH·5H₂O. It appears as a colorless to pale yellow solid that is highly soluble in water, forming a strongly alkaline solution. TMAH is known for its strong basicity, which is attributed to the presence of the hydroxide ion. This compound is commonly used in various applications, including as a developer in photolithography processes in the semiconductor industry, as well as in organic synthesis and as a reagent in analytical chemistry. Due to its strong alkaline nature, TMAH can be corrosive and poses health hazards, necessitating careful handling and appropriate safety measures. It can also act as a surfactant and is utilized in some cleaning applications. The pentahydrate form indicates that it contains five molecules of water, which can influence its physical properties and stability. Overall, TMAH is a versatile chemical with significant industrial relevance, but it requires caution due to its corrosive characteristics.

Formula:C4H12N·5H2O·HO

InChI:InChI=1S/C4H12N.6H2O/c1-5(2,3)4;;;;;;/h1-4H3;6*1H2/q+1;;;;;;/p-1

InChI key:InChIKey=MYXKPFMQWULLOH-UHFFFAOYSA-M

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

  • Synonyms:
  • Ammonium, tetramethyl-, hydroxide, pentahydrate
  • Methanaminium, N,N,N-trimethyl-, hydroxide, hydrate (1:1:5)
  • Methanaminium, N,N,N-trimethyl-, hydroxide, pentahydrate
  • N,N,N-trimethylmethanaminium hydroxide
  • N,N,N-trimethylmethanaminium hydroxide hydrate (1:1:5)
  • Tetramethylammonium hydroxide pentahydrate
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Tetramethylammonium hydroxide pentahydrate, 98%

CAS:10424-65-4

Ref: 02-L09658

25g60.00 €
100gTo inquire
Estimated delivery in United States, on Monday 3 Mar 2025
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Tetramethylammonium hydroxide pentahydrate, 98%

CAS:10424-65-4

Ref: AC-42053

5gTo inquire
25g68.00 €
100g176.00 €
500gTo inquire
Estimated delivery in United States, on Monday 3 Mar 2025
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Tetramethylammonium hydroxide pentahydrate, 97%

CAS:10424-65-4

Ref: AC-20752

25g56.00 €
100g150.00 €
500gTo inquire
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Ref: IN-DA003UQ4

25g26.00 €
50g37.00 €
100g39.00 €
300g71.00 €
500g92.00 €
Estimated delivery in United States, on Friday 7 Mar 2025
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Tetramethylammonium hydroxide pentahydrate

CAS:10424-65-4

Ref: 7W-GK9701

5g22.00 €
25g40.00 €
100g114.00 €
250g214.00 €
Estimated delivery in United States, on Monday 10 Mar 2025
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Tetramethylammonium Hydroxide Pentahydrate

CAS:10424-65-4

Ref: TR-T076495

5g155.00 €
10g247.00 €
25g484.00 €
Estimated delivery in United States, on Monday 17 Mar 2025
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Tetramethylammonium hydroxide pentahydrate, min. 95%

CAS:10424-65-4

Ref: 08-02-5065

10g33.00 €
50g115.00 €
Estimated delivery in United States, on Tuesday 1 Apr 2025
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Tetramethylammonium hydroxide pentahydrate

CAS:10424-65-4

Ref: 3D-FT75544

250g348.00 €
500g471.00 €
Estimated delivery in United States, on Monday 21 Apr 2025
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Tetramethylammonium Hydroxide Pentahydrate extrapure, 98%

CAS:10424-65-4

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