Potassium tert-butoxide

Potassium *tert*-butoxide
Names
	Preferred IUPAC name Potassium tert-butoxide
	Other names KOt-Bu, potassium t-butoxide.
Identifiers
CAS Number	865-47-4 ;
3D model (JSmol)	Interactive image;
ChemSpider	63266 ;
ECHA InfoCard	100.011.583
PubChem CID	70077;
UNII	VR838VHE0V ;
CompTox Dashboard (EPA)	DTXSID2061220 ;
	InChI InChI=1S/C4H9O.K/c1-4(2,3)5;/h1-3H3;/q-1;+1 Key: LPNYRYFBWFDTMA-UHFFFAOYSA-N ; InChI=1/C4H9O.K/c1-4(2,3)5;/h1-3H3;/q-1;+1 Key: LPNYRYFBWFDTMA-UHFFFAOYAU;
	SMILES [K+].[O-]C(C)(C)C;
Properties
Chemical formula	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)
Solubility in water	Reacts with water
Solubility in diethyl ether	4.34 g/100 g (25-26 °C)
Solubility in Hexane	0.27 g/100 g (25-26 °C)
Solubility in Toluene	2.27 g/100 g (25-26 °C)
Solubility in THF	25.00 g/100 g (25-26 °C)
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H228, H252, H314
Precautionary statements	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). verify (what is ?) Infobox references

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.

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