The physical and chemical properties of potassium methoxide demonstrate its unique appearance characteristics and key parameters. Firstly, it exists in two forms, namely liquid and solid. Liquid potassium methoxide appears colorless or slightly yellow, with a viscous texture, and is actually a solution containing 28% -32% potassium methoxide. In contrast, solid potassium methoxide is a pale yellow powder with a relatively high purity of 95% -97%.

In terms of temperature, the melting point of potassium methoxide is relatively low, only -20 ℃, which means that at this temperature, it will transition from a solid state to a liquid state. And its boiling point is relatively high, about 84 ℃, indicating that at standard atmospheric pressure, it will begin to evaporate into gas at 84 ℃.

Density is a measure of the mass of a substance per unit volume, and the density of potassium methoxide at 20 ℃ is 0.95 grams per milliliter, which is an important reference value, especially when it comes to storage and transportation of substances. In addition, the refractive index of potassium methoxide, i.e. n20/D, is 1.37, which is the refractive index of light propagating in the substance and can be used for research on light propagation and optical applications.

It is worth noting that potassium methoxide has a certain degree of volatility, with a flash point of only 7 ℃, which means that it may produce flash ignition at temperatures above 7 ℃. In terms of solubility in water, potassium methoxide has a certain degree of decomposability, which means it may undergo changes when in contact with water.

Overall, the physicochemical properties of potassium methoxide determine its behavior in different environments, including its stability and potential reactivity, which is crucial for understanding and using this compound.