If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf
87741
Tetramethylammonium hydroxide pentahydrate
≥95.0% (T)
Synonym(s):
TMAH Pentahydrate
Select a Size
| Size/SKU | Availability | Price |
|---|---|---|
25 g | Check Cart for Availability | $83.70 |
100 g | Check Cart for Availability | $198.00 |
500 g | Check Cart for Availability | $560.00 |
About This Item
$83.70
vapor density
1.1 (vs air)
Quality Segment
assay
≥95.0% (T)
form
crystals
autoignition temp.
878 °F
expl. lim.
36 %
reaction suitability
core: ammonium, reaction type: phase-transfer
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
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
Application
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
1 of 1
This Item | |||
|---|---|---|---|
| description ≥95.0% (T) | description ≥97% | description 25 wt. % in H2O | description ACS reagent |
| assay ≥95.0% (T) | assay ≥97% | assay - | assay - |
| Quality Level 200 | Quality Level 200 | Quality Level 200 | Quality Level 200 |
| form crystals | form - | form liquid | form liquid |
| solubility soluble (2,200 g/l at 15 °C (59 °F)) | solubility - | solubility water: soluble | solubility - |
| pH (14 at ca.1,000 g/l at 20 °C (68 °F)) | pH - | pH >13 (20 °C) | pH - |
| vapor density 1.1 (vs air) | vapor density 1.1 (vs air) | vapor density - | vapor density - |
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Signal Word
Danger
Hazard Codes
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 (personal protective equipment)
Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges
Precautionary Statements
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How can I determine the shelf life / expiration / retest date of this product?
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How is shipping temperature determined? And how is it related to the product storage temperature?
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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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Regarding CAS.No.: 10424-65-4, please inform us the expiry/retest date as well as storage temperature.
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This product can be stored at room temperature.
This product is not assigned an expiration date or recommended retest date. Customers should routinely inspect products with no expiration date or recommended retest date to ensure they perform as expected. These products are also subject to a one-year warranty from the date of shipment.For more information, you may access the "Product Dating Information" document under "ADDITIONAL USEFUL DOCUMENTS ABOUT OUR PRODUCTS" at the bottom of the Quality Services page with this link: https://www.sigmaaldrich.com/life-science/quality-and-regulatory-management/quality-services.
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