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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

Codice CAS
7693-26-7
Sinonimi

Dimensioni Prezzo ($) Quantità Disponibilità
25g 76,00
100g 252,00
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Potassium hydride, 30% w/w in mineral oil

MDL
MFCD00011357
EINECS
231-704-8

Proprietà chimiche

Formula
KH
Peso formula
40.11
Punto di infiammabilità
160°(320°F)
Densità
1.45
Sensibilità
Moisture Sensitive
Solubilità
Insoluble in benzene, diethyl ether and carbon disulfide.

Applicazioni

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.

Note

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

Letteratura

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.

Rischio GHS e dichiarazioni precauzionali

Dichiarazioni di rischio (UE): H260-H314-H318-H304

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

Dichiarazioni precauzionali: P223-P301+P310a-P303+P361+P353-P305+P351+P338-P405-P501a

Keep away from any possible contact with water, because of violent reaction and possible flash fire. IF SWALLOWED: 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. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

Altri riferimenti

Classe di rischio
4.3
Gruppo di imballaggio
I
Codice tariffe armonizzato
2850.00
TSCA
Yes

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