氯化汞是白色斜方菱形针状结晶块或白色结晶粉末。它的比重为5.42;无臭,但具有苛性金属味;熔点为275℃;能溶于水、醚、醇、吡啶和乙酸脂类、苯、甘油及丙酮等,其水溶液呈酸性;剧毒;常温微有升华,300℃升华而不变质,能与水蒸汽共同挥发;在空气与阳光作用下,其水溶液逐渐分解为Hg_2Cl_2、HCl和O_2。 Mercuric chloride is a white rhomboidal rhombic acicular crystal mass or white crystalline powder. Its specific gravity is 5.42; odorless but caustic taste; melting point is 275 ℃; soluble in water, ether, alcohol, pyridine and acetic acid esters, benzene, glycerin and acetone, Micro-sublimation at room temperature, 300 ℃ sublimation without deterioration, with water vapor co-volatilization; under the action of air and sunlight, the aqueous solution gradually decomposed into Hg_2Cl_2, HCl and O_2.