CAS 75-59-2 Tetramethylammonium hydroxide - Materials / Alfa Chemistry

NAVIGATION

Tetramethylammonium hydroxide

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Catalog Number

ACM75592-1

CAS Number

75-59-2

Product Name

Tetramethylammonium hydroxide

Structure

Category

Polymers

Description

Tetramethylammonium hydroxide is a solid in the hydrated form or a colorless liquid with a strong ammonia-like odor. It is soluble in water. It is corrosive to metals and tissue.;Liquid

IUPAC Name

tetramethylazanium;hydroxide

Molecular Weight

91.15g/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 °C

Density

Specific gravity of solution approximately 1.00 at 24 °C/4 °C

Solubility

In water, 1.0X10+6 mg/L at 25 °C /miscible/ (est)

Application

Tetramethylammonium hydroxide is a versatile product used in various industrial applications. In the field of organic silicon, it acts as a catalyst in the production of materials like dimethyl silicone oil, organic silicone resin, and silicon rubber, with the advantage of being easily removable and not contaminating the final products. In chemical analysis, it serves as a polarographic reagent for polarography experiments. In thermochemolysis studies of fungal degradation of wood, it is utilized as an analytical reagent. For chemical purification, tetramethylammonium hydroxide helps in the removal of metal elements, providing an ash-free base that ensures the precipitation of metals. Within the electronics industry, it plays multiple roles: as a brightening and anisotropic etching agent, a cleaning agent, and a photoresist developer in computer silicon chip production and circuit board printing. It is also employed in semiconductor manufacturing as a chemical stripper. Additionally, it acts as a surfactant to prevent nanoparticle aggregation in ferrofluid synthesis and as a structure-directing agent in the synthesis of zeolites.

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

EC Number

200-882-9

Exact Mass

91.099714g/mol

Formal Charge

Heavy Atom Count

Log P

log Kow = -2.47 (est)

MeSH Entry Terms

tetraamethylammonium acetate;tetramethylammonium;tetramethylammonium bromide;tetramethylammonium chloride;tetramethylammonium fluoride;tetramethylammonium hydrogen dichloride;tetramethylammonium hydroxide;tetramethylammonium hydroxide pentahydrate;tetramethylammonium iodide;tetramethylammonium nitrate;tetramethylammonium perchlorate;tetramethylammonium sulfate (2:1);tetramethylammonium tribromide;tetramethylammonium triiodide;trimethylaminomethane

Monoisotopic Mass

91.099714g/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 °C; Index of refraction: 1/3806 at 20 °C/D; density: 1.106 g/mL at 25 °C /Tetramethylammonium hydroxide solution/;Henry's Law constant = 4.35X10-16 atm-cu m/mol at 25 °C (est);Hydroxyl radical reaction rate constant = 5.06X10-12 cu cm/molec-sec at 25 °C (est)

Rotatable Bond Count

Stability

Stable under recommended storage conditions. /Tetramethylammonium hydroxide pentahydrate/

UNII

5GKP7317Q2

UN Number

1835;1835;1835

Vapor Pressure

1.16X10-6 mm Hg at 25 °C (est)

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