Potassium tert-butoxide
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Potassium tert-butoxide (or potassium t-butoxide) is a chemical compound with the formula [(CH3)3COK]n (abbr. KOtBu). This colourless solid is a strong base (pKa of conjugate acid around 17), which is useful in organic synthesis. The compound is often depicted as a salt, and it often behaves as such, but its ionization depends on the solvent.[1]
Quick Facts Names, Identifiers ...
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Names | |||
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Preferred IUPAC name
Potassium tert-butoxide | |||
Other names
KOt-Bu, potassium t-butoxide. | |||
Identifiers | |||
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3D model (JSmol) |
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ChemSpider |
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ECHA InfoCard | 100.011.583 | ||
PubChem CID |
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UNII | |||
CompTox Dashboard (EPA) |
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Properties | |||
C4H9KO | |||
Molar mass | 112.21 g mol−1 | ||
Appearance | solid | ||
Melting point | 256 °C (493 °F; 529 K) | ||
Boiling point | sublimes at 220 °C (1 mmHg) or at 140 °C (0.01 hPa) | ||
Reacts with water | |||
Solubility in diethyl ether | 4.34 g/100 g (25-26 °C)[1] | ||
Solubility in Hexane | 0.27 g/100 g (25-26 °C)[1] | ||
Solubility in Toluene | 2.27 g/100 g (25-26 °C)[1] | ||
Solubility in THF | 25.00 g/100 g (25-26 °C)[1] | ||
Hazards | |||
GHS labelling:[2] | |||
Danger | |||
H228, H252, H314 | |||
P405 | |||
Safety data sheet (SDS) | Oxford MSDS | ||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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