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
156671
Kalium-tert-butoxid
reagent grade, ≥98%
Synonym(e):
Kalium-t-butoxid, Kaliumtert.-butylat
Größe auswählen
Über diesen Artikel
water: soluble (Hydrolysis, (rigorous decomposition))
Fortfahren mit
Produktname
Kalium-tert-butoxid, reagent grade, ≥98%
InChI
1S/C4H9O.K/c1-4(2,3)5;/h1-3H3;/q-1;+1
SMILES string
[K+].CC(C)(C)[O-]
InChI key
LPNYRYFBWFDTMA-UHFFFAOYSA-N
grade
reagent grade
vapor pressure
1 mmHg ( 220 °C)
assay
≥98%
form
solid
greener alternative product characteristics
Catalysis
Learn more about the Principles of Green Chemistry.
sustainability
Greener Alternative Product
mp
256-258 °C (dec.) (lit.)
Quality Level
solubility
soluble
water: soluble (Hydrolysis, (rigorous decomposition))
greener alternative category
Suchen Sie nach ähnlichen Produkten? Aufrufen Leitfaden zum Produktvergleich
1 of 4
Dieser Artikel | 659878 | 189138 | 720011 |
|---|---|---|---|
| form solid | form solid | form solid | form powder |
| assay ≥98% | assay 99.99% trace metals basis | assay 98% | assay - |
| Quality Level 200 | Quality Level 100 | Quality Level 200 | Quality Level 100 |
| grade reagent grade | grade sublimed grade | grade - | grade - |
| vapor pressure 1 mmHg ( 220 °C) | vapor pressure 1 mmHg ( 220 °C) | vapor pressure - | vapor pressure - |
| mp 256-258 °C (dec.) (lit.) | mp 256-258 °C (dec.) (lit.) | mp 100-103 °C (lit.) | mp 288-292 °C |
Application
tert-Butoxid-assistierte Amidierung von Estern unter grünen Bedingungen
Kalium-tert-butoxid kann als Base bei der intramolekularen Cyclisierung von Iodaren zur Erzeugung von Benzopyran mittels Mikrowellensynthese verwendet werden.[1]
Es kann ferner wie folgt verwendet werden:
- Zum Synthetisieren von aliphatischen und aromatischen Amiden aus entsprechenden Estern und Aminen.[3]
- Als Base in der intramolekularen Cyclisierung von Arylethern, Aminen und Amiden.[1]
- Als Katalysator bei der Herstellung von Styrolderivaten aus Arylhalogeniden und Alkenen mittels der Mizoroki-Heck-Reaktion.[4]
General description
signalword
Danger
hcodes
Hazard Classifications
Eye Dam. 1 - Flam. Sol. 1 - Self-heat. 2 - Skin Corr. 1A
supp_hazards
Lagerklasse
4.2 - Pyrophoric and self-heating hazardous materials
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
Hier finden Sie alle aktuellen Versionen:
Besitzen Sie dieses Produkt bereits?
In der Dokumentenbibliothek finden Sie die Dokumentation zu den Produkten, die Sie kürzlich erworben haben.
-
How can I determine the shelf life / expiration / retest date of this product?
1 answer-
Helpful?
-
-
As far as storage go does this substance require storage under inner gas? Thank you!
1 answer-
This product is sensitive to air and moisture. It should be handled and stored under inert gas.
Helpful?
-
-
How is shipping temperature determined? And how is it related to the product storage temperature?
1 answer-
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
Helpful?
-
-
How can we see melting point of by MR meter Or is it best we go for DSC
1 answer-
The melting point of item 156671 is 256-258°C, as described in the literature. Due to the higher range, the DSC method would be preferred for this compound.
Helpful?
-
Active Filters
Unser Team von Wissenschaftlern verfügt über Erfahrung in allen Forschungsbereichen einschließlich Life Science, Materialwissenschaften, chemischer Synthese, Chromatographie, Analytik und vielen mehr..
Setzen Sie sich mit dem technischen Dienst in Verbindung