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Mercury chloride and mercury are two common mercury compounds that have significant differences in chemical composition, properties, and uses

Mercury chloride is a compound composed of chlorine and mercury elements, with the chemical formula HgCl2 and a white crystalline appearance. And pure mercury is an element, it is a heavy metal with a silver white liquid appearance. It can be seen from the appearance that mercury chloride is a solid, while mercury is a liquid

Mercury chloride and mercury also have significant differences in properties. Mercury chloride is a relatively stable compound that is not easily volatile or oxidized. Therefore, mercury chloride is commonly used in industry as a preservative, fungicide, and water treatment agent. Pure mercury has high volatility, is easy to evaporate, and reacts with oxygen in the air to form mercury vapor, which has high toxicity

In addition, there are also differences in usage. Because mercury chloride is not easily volatile, it can be used in situations that require inhibition of microbial growth, such as fungicides in water treatment, disinfection of medical equipment, and preservatives in agriculture. Mercury, due to its high volatility and conductivity, is often used in electronic devices such as thermometers, blood pressure monitors, batteries, and light bulbs, as well as in the preparation of silver alloys. However, due to the high toxicity of mercury, proper handling and disposal are necessary to avoid harm to the environment and human health

In summary, mercury chloride and mercury are two mercury compounds with different characteristics and uses. Mercury chloride is a solid, relatively stable, not easily volatile or oxidized, and is commonly used as a preservative and fungicide; Mercury is a liquid with high volatility and conductivity, and has a wide range of applications in electronic devices and the preparation of silver alloys. However, we should also note that mercury has high toxicity and requires proper handling and disposal to ensure the safety of the environment and human health.