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- TETRAMETHYLAMMONIUM HYDROXIDE, SOLUTION1.0 Mol/L in WATER, REAGENT (ACS)
TETRAMETHYLAMMONIUM HYDROXIDE, SOLUTION1.0 Mol/L in WATER, REAGENT (ACS)
PRICE INQUIRYCatalog Number
ACM75592-7
Product Name
TETRAMETHYLAMMONIUM HYDROXIDE, SOLUTION1.0 Mol/L in WATER, REAGENT (ACS)
Structure
![{[CurrentData.Name]}](https://resource.alfachemic.com/structure/75-59-2.gif)
CAS
75-59-2
Synonyms
Tetramethylammonium hydroxide solution, ~25% in H₂O; tetra methyl ammonium hydroxide; 75-59-2; Tetrametiloamonio hydroxido; Tetramethylammonium hydroxide solution, 25 wt. % in methanol; Tetrametanoamonio hydroxido; A838458; DB-050413; tetramethylammoniumhydroxide; AC1Q29QX;
IUPAC Name
tetramethylazanium;hydroxide;
Molecular Weight
91.154g/mol
Molecular Formula
C4H13NO;
Canonical SMILES
C[N+](C)(C)C.[OH-];
InChI
InChI=1S/C4H12N.H₂O/c1-5(2,3)4;/h1-4H3;1H2/q+1;/p-1;
InChI Key
WGTYBPLFGIVFAS-UHFFFAOYSA-M;
Melting Point
63 deg C;
Density
Specific gravity of solution approximately 1.00 at 24 deg C/4 deg C;
Solubility
In water, 1.0X10+6 mg/L at 25 deg C /miscible/ (est);
Storage
2-8°C
Color Form
The free base is known only in solution or as a solid pentahydrate, forming colorless, deliquescent needles;Liquid;
Complexity
19.1
Corrosivity
Corrosive;
Covalently-Bonded Unit Count
2
Decomposition
When heated to decomposition it emits toxic fumes of /nitrogen oxides and ammonia/.;
EC Number
200-882-9
Exact Mass
91.1g/mol
H-Bond Acceptor
1
H-Bond Donor
1
Heavy Atom Count
6
Monoisotopic Mass
91.1g/mol
Odor
Strong ammonia-like;
Other Experimental
Decomposes to trimethylamine and methanol upon distillation;Readily absorbs CO2 from the air;When heated to decomposition it emits toxic fumes of NOx and NH₃.;Concn: 25 wt% in water. VP: 17.5 mm Hg at 20 deg C; Index of refraction: 1/3806 at 20 deg C/D; density: 1.106 g/mL at 25 deg C /Tetramethylammonium hydroxide solution/;Henry's Law constant = 4.35X10-16 atm-cu m/mol at 25 deg C (est);Hydroxyl radical reaction rate constant = 5.06X10-12 cu cm/molec-sec at 25 deg C (est);
Stability
Stable under recommended storage conditions. /Tetramethylammonium hydroxide pentahydrate/;
Topological Polar Surface Area
1A^2
UNII
5GKP7317Q2
UN Number
1835
Vapor Pressure
1.16X10-6 mm Hg at 25 deg C (est);
Application
Tetramethylammonium hydroxide solution, a colorless to yellow liquid with a strong ammonia-like odor, is predominantly used in various industrial applications due to its high solubility in water. This versatile compound serves as a powerful anisotropic etchant for silicon, finding significant roles in semiconductor manufacturing for etching silicon chips, as well as in the development of photoresists during photolithography processes. In the realm of organic silicon, it catalyzes the production of dimethyl silicone oil and related products, while ensuring minimal pollution to the end products. As a base, it participates in chemical purification by aiding the precipitation of metal elements without leaving ash, and it functions as a brightening and cleaning agent for computer silicon wafers. Additionally, tetramethylammonium hydroxide is employed in chemical analysis as a polarographic reagent, in the synthesis of ferrofluid as a surfactant to prevent nanoparticle aggregation, and as a structure-directing agent during the synthesis of zeolites. Its reactivity with acids to form salts and water allows for applications in pH adjustment, such as obtaining hexagonal mesoporous aluminophosphate, while its role in thermochemolysis facilitates studies on fungal degradation of wood. Furthermore, in the electronics industry, it acts as a chemical stripper during circuit board printing and semiconductor fabrication.
December 20, 2024
Reliable Reagent for Analytical Chemistry
In our lab, the 1.0 M TETRAMETHYLAMMONIUM HYDROXIDE solution from Alfa Chemistry proved invaluable for polarography experiments. Its role as a polarographic reagent highlighted its precision and consistency, making it indispensable for our research.
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