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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
Assay:
≥95.0% (T)
Form:
crystals

Key Documents

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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 %

Quality Level

200

reaction suitability

core: ammonium

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

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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.

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!

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

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

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

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

Poisonous substance

pdsc

Class I Designated Chemical Substances

prtr

Substances Subject to be Indicated Names

ishl_indicated

Substances Subject to be Notified Names

ishl_notified

87741-6X500G: + 87741-6X100G: + 87741-RSAMPLE: + 87741-25G:4548173321257 + 87741-VAR: + 87741-BULK: + 87741-500G:4548173321264 + 87741-100G:4548173321240

jan

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Certificates of Analysis (COA)

Lot/Batch Number
BCCG8584
BCCG3609
BCCD7700
BCCD0195
BCCB9357

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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)
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)
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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