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Merck

328251

Hydroxyde de tétraméthylammonium solution

10 wt. % in H₂O, solution

Synonyme(s) :

N,N,N-trimethyl-methanaminium hydroxide, TMAH, TMAOH

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A propos de cet article

Formule linéaire :
(CH3)4N(OH)
Numéro CAS:
Poids moléculaire :
91.15
NACRES:
NA.21
PubChem Substance ID:
UNSPSC Code:
12352100
MDL number:
Beilstein/REAXYS Number:
3558708
Concentration:
10 wt. % in H2O
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Nom du produit

Hydroxyde de tétraméthylammonium solution, 10 wt. % in H2O

InChI

1S/C4H12N.H2O/c1-5(2,3)4;/h1-4H3;1H2/q+1;/p-1

SMILES string

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

InChI key

WGTYBPLFGIVFAS-UHFFFAOYSA-M

vapor pressure

17.5 mmHg ( 20 °C)

Quality Level

reaction suitability

core: ammonium

concentration

10 wt. % in H2O

refractive index

n20/D 1.3521

pH

(ca.13 at 20 °C (68 °F))

solubility

water: soluble

density

1.006 g/mL at 25 °C

functional group

amine

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General description

Tetramethylammonium hydroxide (TMAH), is a commercially available quaternary ammonium base with significantly higher basicity than ammonium hydroxide.

Application

Tetramethylammonium hydroxide solution (10 wt. % in H2O) can be used as:      
  • A reactant to synthesize epoxy-polyhedral oligomeric silsesquioxanes (EPOSS) via sol-gel method using 2-(3,4-epoxycyclohexyl)ethyltrimethoxysilane (ECTMS) in IPA.     
  • An ionic liquid to modify SnO2 nanocrystals, which are applicable as an efficient electron transport layer in perovskite solar cells.

TMAH can also be used as an anisotropic etchant for silicon due to its high silicon etching rate. The main advantage of using TMAH is that it causes no danger to electrical circuits due to the absence of alkali ions.

signalword

Danger

Hazard Classifications

Acute Tox. 1 Dermal - Acute Tox. 3 Oral - Aquatic Chronic 3 - Eye Dam. 1 - Skin Corr. 1B - STOT RE 1 Dermal - STOT SE 1

target_organs

Central nervous system, Liver,thymus

Classe de stockage

6.1B - Non-combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

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


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Vladislav V Lobodin et al.
Analytical chemistry, 85(16), 7803-7808 (2013-08-08)
Ultrahigh-resolution Fourier transform ion cyclotron resonance mass spectrometry (FTICR MS) enables the direct characterization of complex mixtures without prior fractionation. High mass resolution can distinguish peaks separated by as little as 1.1 mDa), and high mass accuracy enables assignment of
Jong Tae Leem et al.
Polymers, 13(10) (2021-06-03)
EPOSS of polyhedral oligomeric silsesquioxanes (POSS) mixture structure and LPSQ of ladder-like polysilsesquioxane (LPSQ) structure were synthesized via sol-gel reaction. EPSQ had a high molecular weight due to polycondensation by potassium carbonate. The EPSQ film showed uniform surface morphology due
Man Xu et al.
Environmental science & technology, 47(1), 110-118 (2012-06-12)
Elucidating dissolution kinetics and mechanisms at carbonate mineral-water interfaces is essential to many environmental and geochemical processes, including geologic CO(2) sequestration in deep aquifers. In the present work, effects of background electrolytes on dolomite (CaMg(CO(3))(2)) reactivity were investigated by measuring
Mei Fang et al.
Nanotechnology, 23(14), 145601-145601 (2012-03-22)
Magnetite nanoparticles have been prepared by co-precipitation using a custom-designed jet mixer to achieve rapid mixing (RM) of reactants in a timescale of milliseconds. The quick and stable nucleation obtained allows control of the particle size and size distribution via
L Lemée et al.
Bioresource technology, 117, 234-241 (2012-05-24)
Lignocellulosic biomass was submitted to a biological pretreatment prior to a catalytic hydroliquefaction in order to produce biofuel. The biodegradation process was conducted over 3 months in a reactor under controlled conditions. During the biodegradation process the organic matter was

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