Tetramethylammonium Hydroxide CAS#75-59-2

Name: Tetramethylammonium Hydroxide CAS#75-59-2
SKU: 0

Classification：Quaternary Ammonium Salts

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product description

Products Description of Tetramethylammonium Hydroxide CAS#75-59-2

Tetramethylammonium hydroxide liquid state: Commonly, it is a colorless and transparent aqueous solution (concentration 25% - 50%). High-purity products have no impurity color, while industrial grades may be slightly light yellow. It has strong alkalinity (pH≈14) and an ammonia smell, and its viscosity increases with the increase of concentration. Solid state: White crystalline powder, with extremely strong hygroscopicity. At room temperature, it rapidly deliquesces into a viscous liquid. Therefore, it rarely exists in pure solid form and mostly in the form of hydrates (such as pentahydrate).

Product Name:	Tetramethylammonium hydroxide
Synonyms:	N,N,N-TRIMETHYLMETHANAMINIUM HYDROXIDE;TETRAMETHYLAMMONIUM HYDROXIDE;TMAH;Tetramethylammoniumhydroxide,25%soln.inmethanol;Tetramethylammoniumhydroxide,25%w/wAqueousSolution,99.5%(metalsbasis);TETRAMETHYLAMMONIUM HYDROXIDEOL;Tetramethylammonium hydroxide, 10% in water;Tetramethylammonium hydroxide, 25 wt% in methanol
CAS:	75-59-2
MF:	C4H13NO
MW:	91.15
EINECS:	200-882-9
Product Categories:	Analytical Chemistry;Esterification & Alkylation (GC Derivatizing Reagents);quarternary ammonium bases;Ammonium Hydroxides (Quaternary);GC Derivatizing Reagents;Onium Hydroxides (GC Derivatizing Reagents);Quaternary Ammonium Compounds;Atomic Absorption Spectroscopy (AAS);Digestion Reagents;Pure Reagents for Wet Digestion (Trace SELECT);Reference Material Perchloric acidTitration;Base SolutionsVolumetric Solutions;Organic BasesEssential Chemicals;Reagent Grade;ACS GradeChemical Synthesis;Essential Chemicals;Organic Bases;Routine Reagents;Synthetic Reagents;Electronic Chemicals;Micro/Nanoelectronics;Semiconductor Grade Chemicals;Reference Material Hydrochloric acidTitration;By Reference Material;Chemical Synthesis;AnionicHPLC;Chromatography/CE Reagents;Ion Pair;Ion Pair Reagents;Ion Pair Reagents - Anionic Concentrate;Solutions for non-aqueous titrations;Volumetric Solutions;Base ConcentratesConcentrates (e.g. FIXANAL);Concentrates (e.g. FIXANAL);Reference Material Hydrochloric acid;Titration
Mol File:	75-59-2.mol

Tetramethylammonium hydroxide Chemical Properties

Melting point	°C
Boiling point	110 °C
density	0.866 g/mL at 25 °C
vapor pressure	17.5 mm Hg ( 20 °C)
refractive index	n20/D1.384
Fp	80 °F
storage temp.	Store below +30°C.
solubility	Methanol (Sparingly), Water (Slightly)
form	Solution
color	APHA: ≤10
Odor	strong ammonia-like odor
PH	>13 (H2O, 20°C)
Water Solubility	Soluble in water.
Sensitive	Air Sensitive
Merck	14,9224
BRN	3558708
Stability:	Stable. Flammable. Incompatible with strong oxidizing agents, strong acids.
InChIKey	WGTYBPLFGIVFAS-UHFFFAOYSA-M
CAS DataBase Reference	75-59-2(CAS DataBase Reference)
EPA Substance Registry System	Tetramethylammonium hydroxide (75-59-2)

Product Application of Tetramethylammonium Hydroxide CAS#75-59-2

Tetramethylammonium hydroxide is used to produce tetramethyl-ammonium azide. It is used as an anisotropic etchant of silicon, basic solvent in the development of acidic photoresist in photolithography process, as surfactant in the synthesis of ferrofluid and as a polarographic reagent. It finds application in the production of organic silicon, where it is used for computer silicon wafer surface brightener and cleaning agent. It is also involved in the purification of some metallic elements.

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