Potassium tert-butoxide
ALDRICH/659878 - sublimed grade, 99.99% trace metals basis
Synonym: Potassium tert-butylate; Potassium t-butoxide
CAS Number: 865-47-4
Empirical Formula (Hill Notation): C4H9KO
Molecular Weight: 112.21
EC Number: 212-740-3
MDL Number: MFCD00012162
Linear Formula: (CH3)3COK
Product Type: Chemical
12 Principles of Green Chemistry: Principle 9—Catalytic reagents (as selective as possible) are superior to stoichiometric reagents.
| assay | 99.99% trace metals basis |
| form | solid |
| grade | sublimed grade |
| greener alternative category | Aligned  |
| greener alternative product characteristics | Catalysis Learn more about the Principles of Green Chemistry . |
| InChI | 1S/C4H9O.K/c1-4(2,3)5;/h1 |
| InChI key | LPNYRYFBWFDTMA-UHFFFAOYSA |
| mp | 256-258 °C (dec.) (lit.) |
| Quality Level | 100 |
| reaction suitability | core: potassium |
| SMILES string | [K+].CC(C)(C)[O-] |
| sustainability | Greener Alternative Product |
| vapor pressure | 1 mmHg ( 220 °C) |
| Application: | Potassium tert-butoxide can be used as: • A precursor to fabricate potassium-containing thin films via the atomic layer deposition (ALD) method. • A catalyst for efficient functionalization of silsesquioxanes enabling the preparation of hybrid materials used in optics, electronics, and coating. A strong base in the synthesis of nitriles from aldehydes. • A promoter and base in cyclization and coupling reactions for enabling a wide range of bond-forming reactions via both ionic and radical mechanisms. • Mizoroki-Heck-Type reactions are mediated by potassium tert-butoxide. potassium tert-butoxide can commence the anionic polymerization of carbazolyl-substituted oxiranes. |
| Features and Benefits: | We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Greener Chemistry. This product is an environmentally benign and has been enhanced for catalytic efficiency. Click here  for more information. |
| General description: | Potassium tert-butoxide (KOtBu) is a strong, non-nucleophilic base widely used in organic synthesis and materials science. It appears as a white to off-white crystalline solid that is highly reactive, especially in the presence of moisture or air. It can be used as a vapor deposition precursor in chemical vapor deposition (MOCVD) processes for thin film fabrication. It offers potential utility in depositing potassium-containing films or modifying surface chemistry in the production of advanced materials. |
| Packaging: | 5, 25 g in glass bottle |
| Symbol |   GHS02,GHS05 |
| Signal word | Danger |
| Hazard statements | H228 - H260 - H314 |
| Precautionary statements | P210 - P231 + P232 - P260 - P280 - P303 + P361 + P353 - P305 + P351 + P338 |
| Hazard Codes | F,C |
| Risk Statements | 11-14-35 |
| Safety Statements | 7/9-16-26-36/37/39-43-45 |
| RIDADR | UN 3131 8(4.3) / PGI |
| WGK Germany | WGK 1 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Supplemental Hazard Statements | EUH014 |
| Purity | 99.99% trace metals basis |
| mp | 256-258 °C (dec.) (lit.) |
| UNSPSC | 12352103 |