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Tetramethylammonium hydroxide

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Origin: China

Cas No: 75-59-2

Specification: 99%min

Min order Quantity: 1 /kg

Supply Ability: 50 mt/month

Lead time: 7 days for OEM, 3 days for ready goods

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Products Specification
Product Description

Quick Details

CAS No.:: 75-59-2

Other Names:: Tetramethylammonium Hydroxide(TMAH 25%)

MF:: C4H13NO

EINECS No.:: 75-59-2

Place of Origin:: Shanghai, China

Type:: Pharmaceutical Intermediates, Syntheses Material Intermediates

Purity:: 99%

Brand Name:: THEOREM

Model Number:: TMAH 25%

Application:: Electronics, Industry, Electronics, Industry

Appearance:: colorless liquid, colorless liquid

Chemical name:: TMAH 25%

Purity, %:: ≥ 25

Package:: 25kg/drum, 200kg/drum

Packaging&Delivery

Packaging Details: 25kg/drum, 200kg/drum, 900kg/IBC

Port: Any main port in China

Lead Time:

Quantity(Kilograms)	1 - 30000	>30000
Est. Time(days)	7	To be negotiated

Products Description

Item	Index
Appearance	Colorless liquid
Assay	25.00±0.50%
Hazen	≤ 50#
(CO32-)	≤ 40ppm
(Cl)	≤ 0.1ppm
(CH3OH)	≤ 40ppm
(Li)	≤ 5ppb
(Na)	≤ 10ppb
(Mg)	≤ 5ppb
(Al)	≤ 10ppb
(K)	≤ 10ppb
(Ca)	≤ 10ppb
(Cr)	≤ 5ppb
(Mn)	≤ 5ppb
(Fe)	≤ 5ppb
(Co)	≤ 5ppb
(Ni)	≤ 5ppb
(Cu)	≤ 5ppb
(Zn)	≤ 5ppb
(Mo)	≤ 5ppb
(Ag)	≤ 5ppb
(Cd)	≤ 5ppb
(Pb)	≤ 5ppb
particle (≥0.5μm)	≤100ea/ml

Property

CAS No.: 75-59-2 Formula: C4H13NO Molecular Weight: 91.15210

Description

Tetramethylammonium hydroxide (TMAH or TMAOH) is a quaternary ammonium salt with the molecular formula N(CH3)4+ OH−, and is one of the simplest members of this class of organic compounds. This substance is known in a (relatively) stable solid form only as the pentahydrate. Commercially, the forms in which TMAH is most commonly encountered are as concentrated solutions in water or methanol. The solid and solutions are colorless, or yellowish if impure. Although TMAH has virtually no odor when pure, samples often have a strongly fishy smell from the trimethylamine which is commonly present as an impurity. TMAH has numerous and diverse industrial and research applications (see below).

Basic Info

Chemical Name	Tetramethylammonium hydroxide
Synonyms	AR-300-49; tetreamethyl ammonium hydroxide; nmw-w; AZ-726; TMAH; TRITONNE; Developer; ocg945; TMNOH; nmd3; AZ-300MIF;
CAS No.	75-59-2
Molecular Formula	C4H13NO
Molecular Weight	91.15210
PSA	23.06000
LogP	0.14560

Properties

Appearance & Physical State	colourless to yellow liquid
Density	1.016 (25% aq.)
Boiling Point	110ºC
Melting Point	°C
Flash Point	6ºC
Refractive Index	1.3806
Stability	Stable. Flammable. Incompatible with strong oxidizing agents, strong acids.
Storage Condition	2-8°C
Vapor Pressure	17.5 mm Hg ( 20 °C)

Safety Info

RTECS	PA0875000
Hazard Class	3
Safety Statements	S26-S36/37/39-S45
HS Code	2923900090
WGK Germany	1
Packing Group	II
RIDADR	UN 3286 3/PG 2
Risk Statements	R20/21/22; R34
Hazard Codes	T; C
Signal Word	Danger
Symbol	GHS05, GHS06, GHS08, GHS09
Hazard Declaration	H300 + H310; H314; H370; H372; H411
Caution Statement	P260; P280; P301 + P310 + P330; P303 + P361 + P353; P304 + P340 + P310; P305 + P351 + P338; P308 + P311

Synthesis Route

Methanol+dimethyl carbonate→Tetramethylammonium hydroxide
tetramethylammonium bromide→Tetramethylammonium hydroxide
Tetramethylammonium bicarbonate→Tetramethylammonium hydroxide

Precursor

dimethyl carbonate
trimethylamine
Tetramethylammonium bicarbonate
tetramethylammonium bromide

Downstream Product

4-methylbenzenesulfonate,tetramethylazanium
Tetramethylammonium fluoride
17-β-ESTRADIOL 3-METHYL ETHER
3,7,8-trimethylimidazo[4,5-f]quinoxalin-2-amine

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