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
400173
Lithium tert-butoxide
97%
Synonym(s):
LiOtBu
Select a Size
| Size/SKU | Availability | Price |
|---|---|---|
25 g | Available to ship TODAYfromMILWAUKEE | $170.00 $144.50 |
100 g | Available to ship TODAYfromMILWAUKEE | $513.00 |
About This Item
$144.50
List Price$170.00Save 15%Available to ship TODAYDetails
Quality Segment
assay
97%
form
powder and chunks
bp
110 °C/at 0.1333 hPa
density
0,897 g/cm3
SMILES string
[Li+].CC(C)(C)[O-]
InChI
1S/C4H9O.Li/c1-4(2,3)5;/h1-3H3;/q-1;+1
InChI key
LZWQNOHZMQIFBX-UHFFFAOYSA-N
Application
Other synthetic applications:
- In combination with potassium diisopropylamide, LiOtBu can be used to deprotonate 1-(phenylseleno) alkenes and bis (phenylseleno) acetals.
- LiOtBu can mediate the α-alkylation reaction of ketones with primary alcohols in the absence of any transition metal catalyst.
- LiOtBu is an effective base for the synthesis of 3,4,5-trisubstituted 3H-oxazol-2-ones and 3,4-disubstituted (Z)-oxazolidin-2-ones from substituted propargyl alcohols and aryl/alkyl isocyanates using DMF as a solvent.
1 of 1
This Item | |||
|---|---|---|---|
| description 97% | description 95% | description powder and chunks, ≥99.995% trace metals basis | description ≥99.99% trace metals basis |
| assay 97% | assay 95% | assay ≥99.995% trace metals basis | assay ≥99.99% trace metals basis |
| Quality Level 200 | Quality Level 200 | Quality Level 100 | Quality Level 100 |
| form powder and chunks | form powder and chunks | form powder and chunks | form powder and chunks |
| density 0,897 g/cm3 | density - | density - | density 2.64 g/mL at 25 °C (lit.) |
| bp 110 °C/at 0.1333 hPa | bp - | bp - | bp 1673 °C/1 atm (lit.) |
signalword
Danger
hcodes
Hazard Classifications
Acute Tox. 4 Oral - Eye Dam. 1 - Self-heat. 1 - Skin Corr. 1B
supp_hazards
Storage Class
4.2 - Pyrophoric and self-heating hazardous materials
ppe
Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges
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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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