Tetra Methyl Ammonium Hydroxide Solution

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Tetra Methyl Ammonium Hydroxide Solution Specification

EINECS No
200-882-9

Molecular Formula
C4H13NO

Storage
Store in tightly closed containers, at cool and dry place, away from acids

Assay
25% (w/w) TMAH

Place of Origin
India

HS Code
29211990

Boiling point
~100C (solution); 124C (pure TMAH)

Viscosity
Similar to water

Ph Level
13-14 (strongly alkaline)

Residue on Ignition
0.1%

Loss on Drying
Not applicable (aqueous solution)

Moisture (%)
Balance (solvent: water)

Heavy Metal (%)
0.001%

Melting Point
N/A (liquid solution)

Molecular Weight
91.15 g/mol

Particle Size
Not applicable (liquid)

Other Names
Tetramethylammonium hydroxide; TMAH

CAS No
75-59-2

Type
Alkali; Quaternary ammonium compound

Grade
Electronic grade / Analytical grade

Usage
Etchant, developer in semiconductor manufacturing, organic synthesis, photoresist remover

Purity
25% w/w solution in water (other concentrations available)

Appearance
Clear, colorless to pale yellow liquid

Application
Photoresist developer, anisotropic silicon etching, surfactant, chemical synthesis

Raw Material
Methanol, ammonia, water

Smell
Ammonia-like

Color
Colorless to pale yellow

Form
Liquid (aqueous solution)

Tetra Methyl Ammonium Hydroxide Solution Trade Information

Main Export Market(s)
Australia, Central America, North America, South America, Western Europe, Middle East, Eastern Europe, Asia, Africa

About Tetra Methyl Ammonium Hydroxide Solution

Tetramethylammonium hydroxide (TMAH) solution is a highly basic organic compound that is commonly used as a reagent and etchant in various industrial and laboratory applications. It has the chemical formula N(CH3)4OH and is also known as TMAOH.

TMAH is a colorless to yellowish liquid that is highly soluble in water and has a strong ammoniacal odor. It is typically supplied as a concentrated aqueous solution containing 25-50% TMAH by weight.

TMAH is widely used in the semiconductor industry as a photoresist developer and as an etchant for silicon dioxide and other materials. It is also used in the production of specialty chemicals, pharmaceuticals, and as a surfactant.

Like other highly basic substances, TMAH is corrosive and can cause severe burns and eye damage upon contact. Proper protective equipment, including gloves and goggles, should always be worn when handling this substance. TMAH should be stored in a cool, dry, well-ventilated area away from sources of ignition and incompatible materials.

FAQ

1. What is tetramethyl ammonium hydroxide solution?

Ans - Tetramethyl ammonium hydroxide solution (TMAH) is an aqueous solution of tetramethylammonium hydroxide, and is a strong base used in a variety of industrial and research applications.

2. What are the applications of TMAH?

Ans - TMAH is widely used in the chemical industry, as it is a strong base and can be used as a catalyst in a variety of reactions. It is also used in the semiconductor industry as an etchant, as well as in the pharmaceutical industry as a cleaning agent.

3. Is TMAH hazardous to human health?

Ans - TMAH is toxic and can be harmful if inhaled or swallowed, and skin contact should be avoided. Proper protective equipment such as gloves, safety glasses, and a respirator should be worn when handling TMAH.

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