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/449/386/product-dating-information-mk.pdf
361798
Lithium diisopropylamide solution
2.0 M in THF/heptane/ethylbenzene
Synonym(s):
LDA
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About This Item
Recommended Products
form
liquid
Quality Level
concentration
2.0 M in THF/heptane/ethylbenzene
impurities
3 wt. % diisopropylamine
density
0.812 g/mL at 25 °C
functional group
amine
storage temp.
2-8°C
SMILES string
[Li]N(C(C)C)C(C)C
InChI
1S/C6H14N.Li/c1-5(2)7-6(3)4;/h5-6H,1-4H3;/q-1;+1
InChI key
ZCSHNCUQKCANBX-UHFFFAOYSA-N
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General description
Application
- As an initiator in the anionic polymerization of D,L-lactide and methyl methacrylate.[1]
- To facilitate ester enolization.[2]
- To convert carboxylic acids to enediolate intermediates for preparing trifluoromethyl ketones.[3]
- In ortho-lithiation of arylsulfonyloxazolidinones to prepare N-substituted saccharin analogs.[4]
- To catalyze ortholithiation and Fries rearrangement of aryl carbamates.[5]
- As a promoter in the isomerization of allylic ethers to (Z)-propenyl ethers.[6]
Packaging
Legal Information
Signal Word
Danger
Hazard Statements
Precautionary Statements
Hazard Classifications
Aquatic Acute 1 - Aquatic Chronic 1 - Asp. Tox. 1 - Carc. 2 - Eye Dam. 1 - Flam. Liq. 2 - Skin Corr. 1B - STOT RE 2 - STOT SE 3
Target Organs
Central nervous system, hearing organs, Respiratory system
Supplementary Hazards
Storage Class Code
3 - Flammable liquids
WGK
WGK 2
Flash Point(F)
35.6 °F - closed cup
Flash Point(C)
2 °C - closed cup
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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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Hi, can I know if it's ok to store LDA in THF/heptane/ethylbenzene or in THF/hexane, and nBuLi in Hexanes at -20 degrees celsius? Thanks!
1 answer-
The recommended storage temperature for this product is 2 - 8 °C.
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