8.04918

Potassium tert-butylate

for synthesis

• Synonym(s): Potassium tert-butylate
• Linear Formula: (CH₃)₃COK
• CAS Number: 865-47-4
• Molecular Weight: 112.21
• MDL number: MFCD00012162
• UNSPSC Code: 12352107
• EC Index Number: 212-740-3
• NACRES: NA.22

Properties

• vapor pressure: 0.02 hPa ( 20 °C)
• Quality Level: 200
• assay: ≥98.0% (acidimetric)
• form: powder
• autoignition temp.: 483 °C
• pH: 13 (20 °C, 5 g/L in H₂O, Hydrolysis)
• mp: 256-258 °C
• density: 1.19 g/cm³ at 20 °C
• bulk density: 500 kg/m³
• storage temp.: 2-30°C
• InChI: 1S/C4H9O.K/c1-4(2,3)5;/h1-3H3;/q-1;+1
• InChI key: LPNYRYFBWFDTMA-UHFFFAOYSA-N

Description

General description

Potassium tert-butylate (Potassium tert-Butoxide) is a strong, non-nucleophilic alkoxide base in organic chemistry. Potassium tert-butoxide catalyzes the reaction of hydro silanes and heterocyclic compounds to generate the silyl derivatives. It is used to catalyze the Michael addition reaction, Ramberg-Baecklund reaction, Pinacol rearrangement.

Application

Potassium tert-butylate is used to catalyzes the Michael addition reaction.

Analysis Note

Assay (acidimetric): ≥ 98,0 %(m)
Free KOH: ≤ 1 %(m)
Identity (IR): conforms

Safety Information

• pictograms: GHS02,GHS05
• signalword: Danger
• hcodes: H228 - H252 - H260 - H314
• pcodes: P210 - P231 + P232 - P260 - P280 - P303 + P361 + P353 - P305 + P351 + P338
• Hazard Classifications: Eye Dam. 1 - Flam. Sol. 1 - Self-heat. 2 - Skin Corr. 1A - Water-react 1
• supp_hazards: EUH014
• Storage Class: 4.2 - Pyrophoric and self-heating hazardous materials
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable