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Tetramethylammonium hydroxide pentahydrate

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Origin: China

Cas No: 10424-65-4

Specification: 99%min

Min order Quantity: 1 /kg

Supply Ability: 80 mt/month

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CAS No.: 10424-65-4 Formula: C4H23NO6 Molecular Weight: 181.22900

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 pentahydrate
Synonyms	Tetramethylammonium hydroxide; tetramethylazanium,hydroxide,pentahydrate; TetraMethylaMMoniuM Hydroxide Pentahydrate; Methanaminium, N,N,N-trimethyl-, hydroxide, pentahydrate; TMAH Pentahydrate;
CAS No.	10424-65-4
Molecular Formula	C4H23NO6
Molecular Weight	181.22900
PSA	69.21000
LogP	-0.17590

Properties

Appearance & Physical State	Colorless needlelike crystals
Melting Point	62-71ºC
Water Solubility	soluble
Stability	Stable. Incompatible with strong oxidizing agents, strong acids.
Storage Condition	0-6ºC
Vapor Density	1.1 (vs air)
Vapor Pressure	97 mm Hg ( 20 °C)

Safety Info

RTECS	PA0875000
Hazard Class	8
Safety Statements	S26-S36/37/39-S45
HS Code	2923900090
WGK Germany	1
Packing Group	II
RIDADR	UN 1759/3423
Risk Statements	R20/21/22; R24/25; R34; R44
Hazard Codes	T; C