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7693-26-7 - Potassium hydride, 30% w/w in mineral oil - L13266 - Alfa Aesar

L13266 Potassium hydride, 30% w/w in mineral oil

CAS-Nummer
7693-26-7
Synonyme

Größe Preis ($) Menge Verfügbarkeit
25g 76,00
100g 252,00
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Potassium hydride, 30% w/w in mineral oil

MDL
MFCD00011357
EINECS
231-704-8

Chemische Eigenschaften

Formel
KH
Molmasse
40.11
Flammpunkt
160°(320°F)
Dichte
1.45
Sensitivität
Moisture Sensitive
Löslichkeit
Insoluble in benzene, diethyl ether and carbon disulfide.

Anwendungen

Potassium hydride is a precursor in the production of various bases by deprotonation, highly-hindered bases potassium triethylmethoxide and potassium 3-aminopropylamide It serves as a powerful base in organic synthesis of deprotonate carbonyl compounds and amines to form enolates and amides respectively.

Bemerkungen

Moisture sensitive. Incompatible and reacts violently with water, acids, alcohols, oxidizing agents and chlorinated solvents.

Literaturverweise

Used catalytically to initiate deprotonation of a ketone with sodium hydride: Org. Synth. Coll ., 7, 351 (1990).

Has been used to generate various bases by deprotonation; e.g. the highly-hindered bases potassium triethylmethoxide: Synthesis, 427 (1974), and potassium 2,6-di-t-butylphenoxide (see 2,6-Di-tert-butyl­phenol, A17244). For generation of the strong base potassium 3-aminopropylamide (KAPA), see 1,3-Diaminopropane, A11932.

o-Alkynylanilines cyclize to indoles with KH in NMP; NaH is ineffective: Angew. Chem. Int. Ed., 39, 2488 (2000):

Szcz?śniak, D.; Szcz?śniak, R. Thermodynamics of the hydrogen dominant potassium hydride superconductor at high pressure. Solid State Commun. 2015, 212, 1-4.

Durojaiye, T.; Hayes, J.; Goudy, A. Potassium, rubidium and cesium hydrides as dehydrogenation catalysts for the lithium amide/magnesium hydride system. Int. J. Hydrogen Energy. 2015, 40 (5), 2266-2273.

GHS Gefahren- und Sicherheitshinweise

Gefahrenhinweise (EU): H260-H304-H314

In contact with water releases flammable gases which may ignite spontaneously. May be fatal if swallowed and enters airways. Causes severe skin burns and eye damage.

Sicherheitshinweise: P231+P232-P260-P280-P301+P310-P303+P361+P353-P305+P351+P338-P301+P330+P331-P304+P340-P405-P501a

Handle under inert gas. Protect from moisture. Do not breathe dust/fume/gas/mist/vapours/spray. Wear protective gloves/protective clothing/eye protection/face protection. IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Rinse mouth. Do NOT induce vomiting. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

Weitere Referenzen

Gefahrenklasse
4.3
Verpackungsgruppe
I
Harmonized Tariff Code
2850.00
TSCA
Yes

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