Potassium methoxide
Synonym(s):Potassium methylate
- CAS NO.：865-33-8
- Empirical Formula: CH3KO
- Molecular Weight: 70.13
- MDL number: MFCD00012416
- EINECS: 212-736-1
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-11-19 15:53:33
What is Potassium methoxide?
Chemical properties
solid
The Uses of Potassium methoxide
Potassium methoxide is used as a chemical intermediate. It is also used in biodiesel production and in fuel additives. It acts as a catalyst for the preparation of methyl formate and an alkaline catalyst for dimethyl formamide. Further, it is used as versatile reagents in chemical reactions such as condensation, esterification, alkoxylation and etherification, Claisen condensation, Wolf-Kishner reduction and Stobbe reaction.
Fire Hazard
Flammable solid, igniting in moist air. Rapid addition in bulk amount into halogenated solvents may cause an explosion. Reaction with arsenic pentafluoride in benzene can result in explosion (Kolditz 1965).
Flammability and Explosibility
Flammable
Properties of Potassium methoxide
| Melting point: | -20°C |
| Boiling point: | 84°C |
| Density | 0.95 g/mL at 20 °C |
| vapor pressure | 0Pa at 25℃ |
| refractive index | n |
| Flash point: | 7°C |
| storage temp. | Store below +30°C. |
| solubility | Soluble in methanol and ethanol. |
| form | Liquid |
| pka | 15.17[at 20 ℃] |
| color | Clear colorless |
| Specific Gravity | 0.95 |
| PH | 12.8 (7g/l, H2O, 20℃) |
| Water Solubility | may decompose |
| Sensitive | Moisture Sensitive |
| Hydrolytic Sensitivity | 7: reacts slowly with moisture/water |
| BRN | 3551544 |
| Exposure limits | ACGIH: TWA 200 ppm; STEL 250 ppm (Skin) OSHA: TWA 200 ppm(260 mg/m3) NIOSH: IDLH 6000 ppm; TWA 200 ppm(260 mg/m3); STEL 250 ppm(325 mg/m3) |
| Stability: | Stable. Reacts violently with water. Moisture sensitive. Absorbs carbon dioxide from the air. Incompatible with acids, strong oxidizing agents, acid chlorides, acid anhydrides, alkali metals. |
| CAS DataBase Reference | 865-33-8(CAS DataBase Reference) |
| EPA Substance Registry System | Methanol, potassium salt (865-33-8) |
Safety information for Potassium methoxide
| Signal word | Danger |
| Pictogram(s) |
 Flame Flammables GHS02  Corrosion Corrosives GHS05  Skull and Crossbones Acute Toxicity GHS06  Health Hazard GHS08 |
| GHS Hazard Statements |
H225:Flammable liquids H314:Skin corrosion/irritation H370:Specific target organ toxicity, single exposure |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P280:Wear protective gloves/protective clothing/eye protection/face protection. P301+P330+P331:IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. |
Computed Descriptors for Potassium methoxide
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product: Potassium Methoxide (25% Sol. In Methanol) 865-33-8
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