Lithium Acetylide - Ethylene Diamine Complex (LAEDA)
C2-H8-N2 · C2-H-Li
Lithium Acetylide - Ethylene Diamine Complex (LAEDA, CAS 6867-30-7) is an organolithium reagent with molecular formula C2HLi·C2H8N2. It is typically supplied as a powder.
LAEDA is commonly used as a nucleohphile in organic synthesis and typical application examples include addition to ketons and nucleophilic substitution with alkyl halides to acess terminal alkynes.
LAEDA reacts readily with moisture and oxygen and should be handled under dry, inert conditions. Consult the SDS and site-specific procedures for compatible materials, fire response, and storage.
Applications
Synthesis of substituted acetylenes by reaction with organic halides or with ketons.
Specifications
- LAEDA: min. 90 %
Method of Analysis
Volumetric determination of acetylene gas after decomposition with water. Detailed description available on request.Handling Instructions
Keep and handle under inert gas. Use product only in closed system. Protect from frost, heat and sunlight. Do not allow contact with air. Keep away from heat and sources of ignition. Dust may form explosive mixture in air. Never add water. Do not store near to Acids or together with Carbon dioxide (CO2), Alcohols, Copper, Copper alloys, Halogenated compounds, Mercury, Silver. Pay also attention to the official safety regulations (see “GHS Hazard Pictograms“) and to the Safety Data Sheet - Section 7.
Storage Instructions
When stored according to SDS the material has limited stability due to decomposition over time. We therefore recommend to retest the material 6 month after date of analysis if included on CoA. If not included, use the date of manufacturing for the calculation. For optimum storage stability keep temperature at 0 to 4°C (storage in a refrigerator is recommended). Thermal decomposition with gas evolution starts at a temperature of 40 °C.
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