This product is considered a research grade material, intended for general laboratory use.
T7505
Tetramethylammonium hydroxide pentahydrate
≥97%
Synonym(s):
TMAH
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| Size/SKU | Availability | Price |
|---|---|---|
5 g | Available to ship TODAYfromMILWAUKEE | $51.40 |
25 g | Available to ship TODAYfromMILWAUKEE | $83.20 |
100 g | Available to ship TODAYfromMILWAUKEE | $255.00 |
1 kg | Available to ship TODAYfromMILWAUKEE | $1,520.00 |
About This Item
Linear Formula:
(CH3)4N(OH) · 5H2O
CAS Number:
Molecular Weight:
181.23
UNSPSC Code:
12161900
NACRES:
NA.25
PubChem Substance ID:
EC Number:
200-882-9
Beilstein/REAXYS Number:
3714235
MDL number:
$51.40
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vapor density
1.1 (vs air)
Quality Segment
description
non-ionic
assay
≥97%
autoignition temp.
878 °F
mol wt
181.23 g/mol
expl. lim.
36 %
mp
67-70 °C (lit.)
SMILES string
O.O.O.O.O.[OH-].C[N+](C)(C)C
InChI
1S/C4H12N.6H2O/c1-5(2,3)4;;;;;;/h1-4H3;6*1H2/q+1;;;;;;/p-1
InChI key
MYXKPFMQWULLOH-UHFFFAOYSA-M
General description
Tetramethylammonium hydroxide (TMAOH) is an ion-pairing agent that is usually used in analytical chemistry. It is used in the analysis of marine compounds by thin-layer chromatography-pyrolysis-gas chromatography-mass spectrometry (TLC-pyrolysis-GC/MS) and thermal desorption/capillary GC/inductively coupled plasma mass spectrometry. TMAOH is used in the capillary zone electrophoresis technique for the separation of inorganic anions. Some studies report the oligonucleotide reassociation in the presence of TMAOH. TMAOH aids in the synthesis of organic and inorganic compounds, such as vinyl halides and tetramethylammonium dithiocarboxylates. It is useful in the preparation of iron oxide nanoparticles for use as magnetic resonance imaging contrast agents.
Application
Tetramethylammonium hydroxide pentahydrate has been used in the synthesis of silicalite-1 seed crystals.
Tetramethylammonium hydroxide pentahydrate has been used in a study to assess strains of Pseudomnas species by a single-step gas chromatographic characterization procedure. [1] It has also been used in a study to investigate solid-state metal hydride batteries nickel oxyhydroxide-metal hydride and manganese dioxide-metal hydride.
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This Item | |||
|---|---|---|---|
| assay ≥97% | assay ≥95.0% (T) | assay - | assay - |
| mp 67-70 °C (lit.) | mp 67-70 °C (lit.) | mp - | mp - |
| Quality Level 200 | Quality Level 200 | Quality Level 100 | Quality Level 200 |
| description non-ionic | description - | description - | description - |
| mol wt 181.23 g/mol | mol wt - | mol wt - | mol wt - |
| autoignition temp. 878 °F | autoignition temp. 878 °F | autoignition temp. - | autoignition temp. - |
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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
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Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
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