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Merck

87741

Tetramethylammonium hydroxide pentahydrate

≥95.0% (T)

Synonym(s):

TMAH Pentahydrate

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About This Item

Linear Formula:
(CH3)4N(OH) · 5H2O
CAS Number:
10424-65-4
Molecular Weight:
181.23
UNSPSC Code:
12352100
NACRES:
NA.22
PubChem Substance ID:
57653264
EC Number:
200-882-9
Beilstein/REAXYS Number:
3714235
MDL number:
MFCD00149566

Product Name

Tetramethylammonium hydroxide pentahydrate, ≥95.0% (T)

InChI key

MYXKPFMQWULLOH-UHFFFAOYSA-M

InChI

1S/C4H12N.6H2O/c1-5(2,3)4;;;;;;/h1-4H3;6*1H2/q+1;;;;;;/p-1

SMILES string

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

vapor density

1.1 (vs air)

assay

≥95.0% (T)

form

crystals

autoignition temp.

878 °F

expl. lim.

36 %

impurities

≤0.1% halides (as chloride)

pH

(14 at ca.1,000 g/l at 20 °C (68 °F))

mp

67-70 °C (lit.)

solubility

soluble (2,200 g/l at 15 °C (59 °F))

anion traces

sulfate (SO42-): ≤1000 mg/kg

functional group

amine

Quality Level

200

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Application

Tetramethylammonium hydroxide pentahydrate is a clathrate hydrate, which shows high proton conductivity. It can readily uptake carbon dioxide. It is a promising candidate for energy devices, gas separation, and gas storage applications.
Tetramethylammonium hydroxide pentahydrate is a clathrate hydrate, which shows high proton conductivity. It can readily uptake carbon dioxide. It is a promising candidate for energy devices, gas separation, and gas storage applications.

Tetramethylammonium hydroxide pentahydrate may be used in the preparation of a mesoporous molecular sieve belonging to the MCM-41 (mobil composition of matter No. 41) category with silica to (tetrahedral) aluminum ratio as low as 8.5:1.

Disclaimer

material is sensitive vs air/moisture. filling, handling and storage under Argon!

General description

Tetramethylammonium hydroxide pentahydrate is a clathrate hydrate, which shows high proton conductivity. It can readily uptake carbon dioxide. It is a promising candidate for energy devices, gas separation, and gas storage applications.

signalword

Danger

Hazard Classifications

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

target_organs

Central nervous system, Liver,thymus

Storage Class

6.1A - 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

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges

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Certificates of Analysis (COA)

Lot/Batch Number
BCCN8479
BCCN1065
BCCM0474
BCCL4286
BCCJ9161

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High conductivity and phase transitions of tetramethylammonium hydroxide pentahydrate,(CH3) 4NOH? 5H2O.
Kuriyama N, et al.
Solid State Ionics, 40, 906-909 (1990)
Synthesis of a mesoporous MCM-41 material with high levels of tetrahedral aluminium.
Schmidt R, et al.
Journal of the Chemical Society. Chemical Communications, (12), 1493-1494 (1994)
NMR studies of molecular motion in tetramethylammonium hydroxide pentahydrate.
Ratcliffe CI, et al.
J. Incl. Phenom. Mol. Recog. Chem., 8(1-2), 159-175 (1990)
Proton Conduction of Tetramethylammonium Hydroxide Pentahydrate,(CH 3) 4 NOH? 5 H 2 O, and Its Application to Nickel?Metal Hydride Battery.
Kuriyama N, et al.
Journal of the Electrochemical Society, 137(1), 355-356 (1990)
Markus Welcker et al.
Genes & development, 27(23), 2531-2536 (2013-12-04)
The Fbw7 tumor suppressor targets a broad network of proteins for ubiquitylation. Here we show critical functions for Fbw7 dimerization in regulating the specificity and robustness of degradation. Dimerization enables Fbw7 to target substrates through concerted binding to two suboptimal
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