Colorless and transparent liquid. Has strong refractive index. Easily soluble in ethanol, ether, and hydrogen sulfide aqueous solutions, slightly soluble in water. A constant boiling mixture composed of 63% ethanol and 37% water, with a constant boiling point of 92 ℃ and a solubility of 9% in water at 25 ℃ 1mL/100mL (H2O). Its vapor can form explosive mixtures with air. Exposure to open flames and high heat can cause combustion and explosion. Contact with oxidants will cause violent reactions.

Chromatographic analysis standard substance. Used for colorimetric determination of arsenic acid and as a solvent for separating potassium, sodium, lithium, and chlorates.