75-59-2 Usage
Description
Tetramethylammonium hydroxide is a quaternary ammonium salt that exists as a solid in its hydrated form or as a colorless liquid with a strong ammonia-like odor. It is soluble in water and is known to be corrosive to metals and tissue. Tetramethylammonium hydroxide is widely utilized in various industries due to its unique properties and reactivity.
Uses
Used in Organic Silicon Industry:
Tetramethylammonium hydroxide is used as a catalyst in the production of dimethyl silicone oil, organic silicon resin, and silicon rubber. Its role is to facilitate the removal process with minimal environmental impact, as it does not pollute the products.
Used in Chemical Analysis:
In the field of chemical analysis, Tetramethylammonium hydroxide serves as a polarographic reagent for conducting polarography experiments. It is also used as an analytical reagent in thermochemolysis studies to investigate the fungal degradation of wood.
Used in Chemical Purification:
Tetramethylammonium hydroxide acts as an ash-free alkali and a source of base in the removal of metal elements during chemical purification processes. It aids in the precipitation of metal elements, making the purification process more efficient.
Used in Electronics (Electron):
Tetramethylammonium hydroxide is employed in the production of computer silicon chips, where it functions as a brightening agent, anisotropic etching agent, cleaning agent, and photoresist developer.
Used in Printing of Circuit Boards:
In the printing of circuit boards, Tetramethylammonium hydroxide is utilized as a cleaning agent, ensuring the removal of contaminants and residues for a higher quality end product.
Used in Semiconductor Manufacturing:
Tetramethylammonium hydroxide is also used as a chemical stripper in the semiconductor manufacturing process, contributing to the overall efficiency and quality of the final product.
Used in Synthesis of Ferrofluid:
Tetramethylammonium hydroxide serves as a surfactant in the synthesis of ferrofluid, where it helps inhibit nanoparticle aggregation, thus improving the stability and performance of the ferrofluid.
Used in Synthesis of Zeolite:
In the synthesis of zeolite, the compound acts as a structure directing agent, playing a crucial role in determining the final structure and properties of the zeolite material.
Used in pH Adjustment:
Tetramethylammonium hydroxide solution (25 wt.% solution in water) may be used as a base for pH adjustment in the production of hexagonal mesoporous aluminophosphate (TAP), which is essential for obtaining the desired material properties.
Reactivity Profile
Tetramethylammonium hydroxide acts like a base. Bases are chemically similar to sodium hydroxide (NaOH) or sodium oxide (Na2O). They neutralize acids exothermically to form salts plus water. When soluble in water they give solutions having a pH greater than 7.0. Mixing these materials with water can generate troublesome amounts of heat as the base is dissolved or diluted. Bases react with certain metals (such as aluminum and zinc) to form oxides or hydroxides of the metal and generate gaseous hydrogen. Bases may initiate polymerization reactions in polymerizable organic compounds, especially epoxides). They may generate flammable and/or toxic gases with ammonium salts, nitrides, halogenated organics, various metals, peroxides, and hydroperoxides. Materials of this group often serve as catalysts.
Health Hazard
TOXIC; inhalation, ingestion or skin contact with material may cause severe injury or death. Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.
Fire Hazard
Combustible material: may burn but does not ignite readily. When heated, vapors may form explosive mixtures with air: indoors, outdoors and sewers explosion hazards. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. Runoff may pollute waterways. Substance may be transported in a molten form.
Safety Profile
Poison by subcutaneous route. A powerful caustic. A corrosive irritant to skin, eyes, and mucous membranes. When heated to decomposition it emits toxic fumes of NOx and NH3.
References
1.https://en.wikipedia.org/wiki/Tetramethylammonium_hydroxide#Uses
2.http://sacheminc.com/other-chemicals/tetramethylammonium-hydroxide-tmah/
3.https://www.fs.usda.gov/treesearch/pubs/15506
4.https://www.concordia.ca/content/dam/concordia/services/safety/docs/EHS-DOC-020_TMAHGuidelines.pdf
5.http://www.lookchem.com/ChemicalProductProperty_EN_CB2854236.htm
Check Digit Verification of cas no
The CAS Registry Mumber 75-59-2 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 7 and 5 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 75-59:
(4*7)+(3*5)+(2*5)+(1*9)=62
62 % 10 = 2
So 75-59-2 is a valid CAS Registry Number.
InChI:InChI=1/C4H12N.H2O/c1-5(2,3)4;/h1-4H3;1H2/q+1;/p-1
75-59-2Relevant articles and documents
Synthesis method of N-hydroxymethyl acrylamide
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Paragraph 0033-0035, (2021/06/12)
The invention relates to a synthesis method of N-hydroxymethyl acrylamide. By taking solid acrylamide and paraformaldehyde as raw materials, adopting a supported quaternary ammonium base catalyst, and selectively activating an amino group in the acrylamide by controlling the size of a hydrocarbyl group connected with quaternary ammonium base and utilizing the steric effect of hydrocarbyl, the self-polymerization behavior in the production process of the N-hydroxymethyl acrylamide is reduced, and the N-hydroxymethyl acrylamide monomer is efficiently obtained. The supported quaternary ammonium alkali is used as the catalyst, the reaction condition is mild, the selectivity is high, system polymerization caused by the traditional inorganic alkali liquor reaction is effectively avoided, and the reaction system can realize high-efficiency conversion of raw materials without adding a large amount of water as a reaction solvent, so that the yield is improved; and the supported quaternary ammonium base catalyst has the characteristics of large specific surface area, high reaction activity and the like, greatly reduces the use amount of solvent water in the reaction process, is convenient to remove in the post-treatment process, and reduces sewage discharge.
Quaternary ammonium salt type perrhenate ionic liquid and synthetic method and application thereof
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Paragraph 0022, (2017/06/02)
The invention discloses quaternary ammonium salt type perrhenate ionic liquid and a synthetic method and application thereof. The method comprises the steps that alkyl ammonium bromide and KOH are reacted to obtain quaternary ammonium base, the quaternary ammonium base and perrhenate (NH4ReO4) metal salt are subjected to a replacement reaction, and quaternary ammonium salt type perrhenate ionic liquid is obtained. The synthesized quaternary ammonium salt type perrhenate ionic liquid is a pollution-free catalyst, has catalysis activity for lignocellulose, can be used as the catalyst for degrading lignocellulose to prepare reducing sugar, and the high yield is obtained.
Temperature effect on the molecular interactions between ammonium ionic liquids and N, N-dimethylformamide
Attri, Pankaj,Venkatesu, Pannuru,Kumar, Anil
experimental part, p. 13415 - 13425 (2011/02/18)
In view of the wide scope of molecular interactions between the highly polar compound of N,N-dimethylformamide (DMF) and ammonium ionic liquids (ILs), we have measured thermophysical properties such as densities (??) and ultrasonic sound velocities (u) over the whole composition range at temperatures ranging from 25 to 50 ?°C under atmospheric pressure. To gain some insight into the several aggregations of molecular interactions present in these mixed solvents, we predicted the excess molar volume (VE) and the deviations in isentropic compressibilities (??Ks) as a function of the concentration of IL. These results are fitted to the Redlich-Kister polynomials. The materials investigated in the present study included the hydroxide series of ammonium ILs of tetramethylammonium hydroxide [(CH 3)4N][OH] (TMAH), tetraethylammonium hydroxide [(C 2H5)4N][OH] (TEAH), and tetrapropylammonium hydroxide [(C2H7)4N][OH] (TPAH). The intermolecular interactions and structural effects were analyzed on the basis of the measured and the derived properties. A qualitative analysis of the results is discussed in terms of the ion-dipole and ion-pair interactions, and hydrogen bonding between ILs and DMF molecules and their structural factors. ? 2010 American Chemical Society.