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Tetramethylammonium hydroxide solution

SIAL/328251 - 10 wt. % in H2O

Synonym: N,N,N-trimethyl-methanaminium hydroxide; TMAH; TMAOH

CAS Number: 75-59-2
Empirical Formula (Hill Notation): C4H13NO
Molecular Weight: 91.15
MDL Number: MFCD00008280
Linear Formula: (CH3)4N(OH)
Product Type: Chemical
Catalog Number PKG Qty. Price Quantity
45-328251-250ML 250 mL
 $71.60
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45-328251-1L 1 L
 $174.00
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This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: 328251-1L.

 

concentration 10 wt. % in H2O
density 1.006 g/mL at 25 °C
InChI 1S/C4H12N.H2O/c1-5(2,3)4;/h1-4H3;1H2/q+1;/p-1
InChI key WGTYBPLFGIVFAS-UHFFFAOYSA-M
Quality Level 100 
refractive index n20/D 1.3521
SMILES string [OH-].C[N+](C)(C)C
vapor pressure 17.5 mmHg ( 20 °C)
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.
General description: Tetramethylammonium hydroxide (TMAH), is a commercially available quaternary ammonium base with significantly higher basicity than ammonium hydroxide.
Packaging: 1 L in glass bottle
Packaging: 250 mL in glass bottle
Density 1.006 g/mL at 25 °C
Refractive Index n20/D 1.3521
UNSPSC 12352100

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