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79267

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:
Poids moléculaire :
153.22
Beilstein:
3917033
Numéro MDL:
Code UNSPSC :
12352005
ID de substance PubChem :
Nomenclature NACRES :
NA.22

Forme

liquid

Niveau de qualité

Concentration

~25% in H2O (1.68 M)

Indice de réfraction

n20/D 1.395

Groupe fonctionnel

amine

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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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

Mention d'avertissement

Danger

Mentions de danger

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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Consulter la Bibliothèque de documents

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
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
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
Alec N Salt et al.
Journal of the Association for Research in Otolaryngology : JARO, 13(6), 771-783 (2012-09-13)
Perilymph pharmacokinetics was investigated by a novel approach, in which solutions containing drug or marker were injected from a pipette sealed into the perilymphatic space of the lateral semi-circular canal (LSCC). The cochlear aqueduct provides the outlet for fluid flow
Alec N Salt et al.
Hearing research, 232(1-2), 78-86 (2007-07-31)
Local delivery of drugs to the inner ear is increasingly being used in both clinical and experimental studies. Although direct injection of drugs into perilymph appears to be the most promising way of administering drugs quantitatively, no studies have yet

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