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Tetramethylammonium hydroxide pentahydrate (
) is a white, crystalline, highly alkaline solid (CAS 10424-65-4) used extensively as a strong base, solvent-free silicon wafer etchant, positive photoresist developer, and phase-transfer catalyst. It acts as a clathrate hydrate with high proton conductivity and is often utilized in zeolite synthesis.
Key Properties and Applications:
- Appearance: White solid/crystals, often with a strong amine odor.
- Melting Point: Approx. to.
- Applications:
- Electronics: Widely used as a developer and cleaner for liquid crystal displays (LCDs), integrated circuits, and printed circuit boards.
- Synthesis: Used as a template in zeolite synthesis and as a catalyst in organic chemistry, such as producing silicon rubber.
- Analytical Chemistry: Acts as an ion-pairing agent and used in pyrolysis-GC/MS.
- Hazards: Highly corrosive and toxic, capable of causing severe skin and eye burns, and potential systemic poisoning.
- Handling: Highly sensitive to air and moisture; it should be stored under argon.
Specifications:
- Assay: Generally .
- Appearance: Colorless/white solid.
- Storage: 5–40°C in sealed containers.
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Tetramethylammonium hydroxide = 95.0 T 10424-65-4
Sigma-Aldrich
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Tetramethylammonium hydroxide pentahydrate is a clathrate hydrate, which shows high proton conductivity. It can readily uptake carbon dioxide.Read more
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Tetramethylammonium hydroxide
Wikipedia
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Tetramethylammonium hydroxide (TMAH or TMAOH) is a quaternary ammonium salt with molecular formula N(CH 3 ) 4 + OH −.Read more
Tetramethylammonium Hydroxide, Pentahydrate
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Chemical Formula, : (CH3)4NOH.5H2O ; Chemical, : 1kg ; Color, : Colorless/white solid ; Composition, : Tetramethylammonium Hydroxide Pentahydrate 100% ; DOT, : ...Read more
People also ask
What does TMAH do to your body?
* Tetramethyl Ammonium Hydroxide is a CORROSIVE CHEMICAL and contact can severely irritate and burn the skin and eyes with possible eye damage. * Breathing Tetramethyl Ammonium Hydroxide can irritate the nose and throat causing coughing and wheezing.
TETRAMETHYL AMMONIUM HYDROXIDE HAZARD ... - NJ.gov
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What does TMAH smell like?
ammonia like smell
TMAH is available in solution and in the pentahydrate form as a white crystalline solid. The odor can be described as a strong, ammonia like smell. Although pure TMAH will have virtually no odor, solutions may give off a fishy smell.
2
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What is another name for Tetrabutylammonium hydroxide?
Tetrabutylammonium hydroxide; Tetra-n-butylammonium hydroxide. tetra(n-butyl)ammonium hydroxide. UNII-68I858J9S1. TBAH.
Tetrabutylammonium Hydroxide | C16H36N.HO - PubChem - NIH
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Web results
ch3 4noh 5h2o
Sinograce Chemical
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Typical properties CAS No.: 10424-65-4 Chemical formula: (CH3)4NOH·5H2O Molecular weight: 181.15 Melting Point(℃): 63 Form: White solid powder Purity ...Read more
Raman spectra of (CH3)4NOH.5H2O and (CH3)4NI
ScienceDirect.com
https://www.sciencedirect.com › article › abs › pii
ScienceDirect.com
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by SJ Anhouse1972Cited by 22 — Raman spectra are presented for crystalline (CH34NI and for (CH3)4NOH.5H2O as melt, aqueous solution and crystal. Several assignments reported in the ...Read more
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Tetramethylammonium Hydroxide Pentahydrate CAS ...
Haihang Industry
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Haihang Industry
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Tetramethylammonium Hydroxide Pentahydrate CAS 10424-65-4 ; Items, Specifications ; Purity[(CH3)4NOH.5H2O], ≥99.00% ; Melting Point, 67-70℃ ; Cl, ＜0.1×10-3.Read more
Tetramethylammonium hydroxide/TMAH Pentahydrate ...
Horay Industry Co., Ltd.
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Horay Industry Co., Ltd.
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Tetramethylammonium hydroxide/TMAH Pentahydrate CAS 10424-65-4 ; Purity[(CH3)4NOH.5H2O]. ≥99.00% ; Melting Point. 67-70℃ ; Cl. ＜0.1×10 ; Carbonate. ≤1% ; Alkali. ≥ ...Read more
High conductivity and phase transitions of ...
ScienceDirect.com
https://www.sciencedirect.com › science › article › pii
ScienceDirect.com
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by N Kuriyama1990Cited by 40 — A clathrate hydrate, tetramethylammonium hydroxide pentahydrate was found to be a fast “proton” or “hydroxide ion” conductor, about 5×10 −3 Scm −1.Read more
Buy Tetramethyl ammonium hydroxide TMAH-99 ...
Sinograce Chemical
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Sinograce Chemical
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Tetramethyl ammonium hydroxide TMAH-99 ; CAS No. · 10424-65-4 ; Chemical formula · (CH3)4NOH·5H2O ; Molecular weight · 181.15 ; Melting Point(℃): 63 ; Form · White solid ...Read more