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Sigma-Aldrich

Trimethylphenylammonium hydroxide solution

~25% in H2O (1.68 M)

Synonyme(s) :

Phenyltrimethylammonium hydroxide, TMAH

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About This Item

Formule linéaire :
(CH3)3N(OH)C6H5
Numéro CAS:
1899-02-1
Poids moléculaire :
153.22
Numéro Beilstein :
3917033
Numéro MDL:
MFCD00041899
Code UNSPSC :
12352005
ID de substance PubChem :
57652783
Nomenclature NACRES :
NA.22

Forme

liquid

Niveau de qualité

100

Concentration

~25% in H2O (1.68 M)

Indice de réfraction

n20/D 1.395

Chaîne SMILES 

[OH-].C[N+](C)(C)c1ccccc1

InChI

1S/C9H14N.H2O/c1-10(2,3)9-7-5-4-6-8-9;/h4-8H,1-3H3;1H2/q+1;/p-1

Clé InChI

HADKRTWCOYPCPH-UHFFFAOYSA-M

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Catégories apparentées

Description générale

Trimethylphenylammonium hydroxide solution (TMPAH) is a quaternary ammonium compound that is commonly used as a strong base in organic synthesis. It is also used as a deprotecting agent for the removal of t-butoxycarbonyl (Boc) groups from amino acids or peptides and benzyl protecting groups from alcohols or amines.

Application

Trimethylphenylammonium hydroxide solution can be used to initiate the polymerization of the monomer 1,8-dihydroxymethyl-1,3,5,7-octatetrayne (DHOT) for the preparation of polymer nanospheres. It is also used as a base in the synthesis of alkyl 3-nitroacrylates via aldol reaction with nitroacetaldehyde or nitroacetone.

Pictogrammes

Corrosion
GHS05

Mention d'avertissement

Danger

Mentions de danger

H314

Classification des risques

Eye Dam. 1 - Skin Corr. 1B

Code de la classe de stockage

8A - Combustible corrosive hazardous materials

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Équipement de protection individuelle

Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter

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Fazel Abdolahpur Monikh et al.
Nature communications, 12(1), 899-899 (2021-02-11)
Analytical limitations considerably hinder our understanding of the impacts of the physicochemical properties of nanomaterials (NMs) on their biological fate in organisms. Here, using a fit-for-purpose analytical workflow, including dosing and emerging analytical techniques, NMs present in organisms are characterized
Estefanía Noriega-Fernández et al.
Foods (Basel, Switzerland), 10(3) (2021-04-04)
The aim of this work was to evaluate the potential of ultrasound (US), alone or in combination with mild heating and/or EDTA towards reduction of As, Cd, I, and Hg content of Laminaria hyperborea. Concentrations of As, Cd, I, and
Seungjoon Chung et al.
International journal of environmental research and public health, 17(12) (2020-06-25)
This study describes an immobilization method of enriched microorganism, for robustly degrading organic compounds, including tetramethyl ammonium hydroxide (TMAH) in electronics wastewater without an increase of total organic carbon (TOC) in effluent. The enriched TMAH degrading bacteria was entrapped inside
Jie Zhang et al.
Journal of chromatography. A, 1216(44), 7527-7532 (2009-04-07)
A method has been established for the determination of four pharmaceutically active compounds (ibuprofen, ketoprofen, naproxen and clofibric acid) in water samples using dynamic hollow fiber liquid-phase microextraction (HF/LPME) followed by gas chromatography (GC) injection port derivatization and GC-mass spectrometric
Alec N Salt et al.
Hearing research, 283(1-2), 14-23 (2011-12-20)
It has been widely believed that drug entry from the middle ear into perilymph occurs primarily via the round window (RW) membrane. Entry into scala vestibuli (SV) was thought to be dominated by local, inter-scala communication between scala tympani (ST)
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