Tetramethylammonium Hydroxide

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Tetramethylammonium Hydroxide Specification

Other Names
TMAH Tetramethylammonium hydrate

Solubility
Completely soluble in water

Purity
99%

Storage
Store in a cool dry and well-ventilated area away from strong acids and oxidizing agents

Shape
Liquid

Refractive Rate
1.356 (at 20C)

Ph Level
14 (in aqueous solution)

HS Code
29231000

Molecular Formula
C4H13NO

Boiling point
102C (as aqueous solution)

Melting Point
-80C (as aqueous solution)

Smell
Ammoniacal

Form
Colorless Solution

Density
1.015 Gram per cubic centimeter(g/cm3)

Structural Formula
(CH3)4N+ OH-

Poisonous
No

Molecular Weight
91.15 g/mol

Classification
Organic Base

Chemical Name
Tetramethylammonium Hydroxide

CAS No
75-59-2

EINECS No
200-880-8

Grade
Industrial Grade

Standard
ASTM D1193

Type
Chemical Intermediate

Usage
Used as a developer in lithography etching in silicon wafer production and as a strong base in organic synthesis

Main Material
Tetramethylammonium compound

Application
Semiconductor manufacturing organic synthesis and analytical chemistry

About Tetramethylammonium Hydroxide

Tetra methyl ammonium Hydroxide

CAS NO. : 75-59-2
MOLECULAR FORMULA : (CH3)4NOH
MOLECULAR WEIGHT : 91.15

ASSAY wt % : 25
CO3 (Carbonate) ppm : 300
Ag (Silver) ppb   : 50
Al (Aluminum) ppb : 50
Ca (Calcium) ppb     : 50
Co (Cobalt) ppb : 50
Cr (Chromium) ppb : 50
Cu (Copper) ppb : 50
Fe (Iron) ppb : 50
K (Potassium) ppb : 50
Mg (Magnesium) ppb : 50
Na (Sodium) ppb : 50
Ni (Nickel) ppb : 50
Zn (Zinc) ppb     : 50
Color (AP-HA) : 10

Boiling Point    : deg c 98.9
Freezing Point : deg c <-25
Viscosity @ 25 deg C : CST 3.0
Specific Gravity @ 20 deg C : 1.01
PH     : >13
Odor : Amine

Packaging : 250kg/drum/.