Potassium tert-butoxide (t-BuOK, CAS 865-47-4) is a strong non-nucleophilic organic alkali, white to off-white crystalline solid, highly sensitive to moisture and air. It is widely used as base and catalyst in fine chemical, pharmaceutical intermediate and polymer synthesis. TNJ Chemical is the leading manufacturer and exporter since from 2001. We guarantee high quality, competitive price, stable supply, fast delivery and tech support etc. To find more, please contact sales@tnjchem.com
Chemical Name Potassium tert-butoxide
CAS No. 865-47-4
EINECS 212-740-3
Molecular Formula C₄H₉KO, (CH₃)₃COKMolecular Weight 112.21
Synonym t-BuOK, Potassium tert-butylate, Potassium 2-methylpropan-2-olate, KOtBu
Chemphysical Properties
Appearance White to off-white crystalline powder
Melting Point 256–258 ℃ (decompose)
Boiling Point 275 ℃Density 0.929 g/cm³ (20℃)
Solubility Reacts with water; soluble in THF, toluene, hexane, diethyl ether
Flash Point 11 ℃Sensitivity Moisture sensitive, reacts violently with water
Quality Specification
| Test Item | Synthesis Grade | Reagent Grade |
|---|---|---|
| Assay | ≥98.0% | ≥99.0% |
| Free KOH | ≤1.0% | ≤0.5% |
| Water content | ≤0.5% | ≤0.3% |
| Identification (IR) | Conforms | Conforms |
| Heavy Metals | ≤50ppm | ≤20ppm |
Use & Application
Synthesis grade potassium tert-butoxide serves as a strong non-nucleophilic base for bulk fine chemical synthesis. It is widely applied in deprotonation, elimination reaction, Michael addition and Ramberg-Baecklund reaction. It is commonly used for preparation of agrochemical intermediates, organic electronic materials and specialty monomers, delivering stable catalytic performance for large-scale chemical production.
Reagent grade potassium tert-butoxide meets strict impurity control for pharmaceutical and laboratory research. It is used for synthesis of API intermediates, cyclization reactions, Heck coupling and enantioselective organic transformations. Low free alkali and low moisture content minimize side reactions, suitable for high-value drug intermediate development and laboratory custom synthesis.
Packing
25kg iron drum with nitrogen sealed. Customized packing available on request. Packed under nitrogen protection to avoid moisture.
Delivery & Storage
Store in dry, inert-atmosphere warehouse, sealed tightly, away from water, moisture, acid and oxidizing agents. Keep package sealed at all times. Avoid contact with air. Shelf life is 12 months under proper sealed storage. Hazardous goods shipment with complete export documents.
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