Potassium methoxideCAS#865-33-8
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Chemical Name:Potassium methoxide
CAS No.865-33-8
Molecular Formula:CH3KO
Molecular weight:70.13
Sample: Available
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Products Description of Potassium methoxideCAS#865-33-8
Potassium methoxide is an alcohol salt of methanol and potassium counter ion, and is used as a strong base and catalyst for transesterification reactions, especially for the production of biodiesel. Potassium methoxide includes liquid potassium methoxide and solid potassium methoxide. The liquid product is a colorless or slightly yellow, viscous methanol solution with a potassium methoxide content of about 28%-32%; the solid product is a light yellow powder with a potassium methoxide content of about 95%-97%. In the past few years, potassium methoxide solution has become increasingly popular. In addition, it is also the most commonly used biodiesel catalyst. In 2018, the production share of potassium methoxide solution catalyst was 96.2%. This proportion will increase in the next six years.
Potassium methoxide Chemical Properties
Melting point | -20°C |
Boiling point | 84°C |
density | 0.95 g/mL at 20 °C |
vapor pressure | 0Pa at 25℃ |
refractive index | n20/D 1.37 |
Fp | 7°C |
storage temp. | Store below +30°C. |
solubility | Soluble in methanol and ethanol. |
form | Liquid |
pka | 15.17[at 20 ℃] |
Specific Gravity | 0.95 |
color | Clear colorless |
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) |
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
Hazard Codes | F,T,C |
Risk Statements | 11-14-34-67-65-63-48/20-39/23/24/25-38-23/24/25 |
Safety Statements | 8-16-26-43-45-62-46-36/37/39-33-29-25 |
RIDADR | UN 3274 3/PG 2 |
WGK Germany | 1 |
F | 3-10-23 |
Autoignition Temperature | 30 - 50 °C |
TSCA | Yes |
HazardClass | 4.2 |
PackingGroup | II |
HS Code | 29051900 |
Product Application of Potassium methoxide CAS#865-33-8
1. Potassium methoxide is an organic metal compound that can be used as a condensation agent and a strong alkaline catalyst for the production of methyl formate, dimethyl carbonate, and dimethylformamide.
2. It can be used to produce sulfonamides (such as sulfadiazine, sulfadiazine, sulfamethoxine, sulfadiazine, etc.), trimethoprim, fluorenyl alcohol, vitamin A, vitamin B1 and other pharmaceutical products and pesticide products.
3. It can be used as a catalyst for processing edible fats and edible oils, a tanning agent for leather, and an analytical reagent.
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