Skip to Content
Merck
CN

Key Documents

View All Documentation

334901

Tetramethylammonium hydroxide solution

25 wt. % in methanol, solution

Synonym(s):

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

Sign In to View Organizational & Contract Pricing.

Select a Size

Change View

About This Item

Linear Formula:
(CH3)4N(OH)
CAS Number:
75-59-2
Molecular Weight:
91.15
NACRES:
NA.21
PubChem Substance ID:
57648847
UNSPSC Code:
12352100
MDL number:
MFCD00008280
Beilstein/REAXYS Number:
3558708
Concentration:
25 wt. % in methanol
Form:
liquid
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist

Product Name

Tetramethylammonium hydroxide solution, 25 wt. % in methanol

vapor pressure

17.5 mmHg ( 20 °C)

Quality Level

200

form

liquid

reaction suitability

core: ammonium

concentration

25 wt. % in methanol

impurities

≤10% water, ≤2% chloride

density

0.866 g/mL at 25 °C

functional group

amine

SMILES string

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

InChI

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

InChI key

WGTYBPLFGIVFAS-UHFFFAOYSA-M

General description

Tetramethylammonium hydroxide is a strong base used in the o-alkylation of phenolic and carboxylic OH groups.

Tetramethylammonium hydroxide is a quaternary ammonium salt generally used as an anisotropic etchant for silicon due to its high silicon etching rate.

Application

Tetramethylammonium hydroxide solution (25 wt.% solution in methanol) may be used in the synthesis of zirconium oxides via a modified sol-gel method with potential application as catalyst materials in CO hydrogenation.

Still not finding the right product?

Explore all of our products under Tetramethylammonium hydroxide solution

signalword

Danger

Hazard Classifications

Acute Tox. 2 Dermal - Acute Tox. 2 Oral - Acute Tox. 3 Inhalation - Aquatic Chronic 3 - Eye Dam. 1 - Flam. Liq. 3 - Skin Corr. 1B - STOT RE 1 Dermal - STOT SE 1

target_organs

Eyes,Central nervous system, Liver,thymus

Storage Class

3 - Flammable liquids

wgk

WGK 3

flash_point_f

80.6 °F - closed cup

flash_point_c

27 °C - closed cup

ppe

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

Regulatory Information

危险化学品

This item has

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
MKCQ5674
MKCP3355
MKCK9322
SHBL0630
SHBJ4838

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Characterization of Zirconia-based catalysts prepared by precipitation, calcination, and modified sol-gel methods.
Feng Z, et al.
Industrial & Engineering Chemistry Research, 34(1), 78-82 (1995)
The characteristic behavior of TMAH water solution for anisotropic etching on both silicon substrate and SiO 2 layer.
Chen PH, et al.
Sensors and actuators A, Physical, 93(2), 132-137 (2001)
Amy J Williams et al.
Astrobiology, 19(4), 522-546 (2019-03-15)
The Mars Curiosity rover carries a diverse instrument payload to characterize habitable environments in the sedimentary layers of Aeolis Mons. One of these instruments is Sample Analysis at Mars (SAM), which contains a mass spectrometer that is capable of detecting
View All Related Papers

Global Trade Item Number

SKUGTIN
334901-500ML04061826738542
334901-100ML04061826738504
334901-4X100ML04061826738511