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[Chemical Knowledge]：Reveal the truth of barium chloride dihydrate and barium chloride

Read： 655 Time：17months ago Source：Transform the World with Simplicity

Barium chloride dihydrate and barium chloride are two common compounds, which have important application value in chemistry, medicine and other fields. Although they have only one word difference in name, they are very different in physical properties, chemical properties, uses and safety.

barium chloride dihydrate (BaCl2.2H2O) is a dihydrate, also known as barium chloride hydrate. It is a colorless crystal, soluble in water. Barium chloride dihydrate is hygroscopic and easily absorbs moisture in the air and forms hexahydrate. It is often used as a reagent in chemical laboratories to detect the presence of sodium sulfate and to determine moisture content. In addition, barium chloride dihydrate is also widely used in pharmaceutical manufacturing, textile industry, leather manufacturing and other industrial fields. However, barium chloride dihydrate is a toxic substance, and excessive swallowing or inhalation will cause serious harm to human health, so it is necessary to pay attention to safe operation during use.

In contrast, barium chloride (BaCl2) is anhydrous, colorless crystals, not easily soluble in water. Barium chloride has good hygroscopicity and solubility, and is soluble in organic solvents such as methanol and ethanol. Barium chloride is often used in the preparation of barium salt in industrial production, the preparation of metal barium, metal surface treatment and other fields. In addition, barium chloride can also be used as a precipitant, such as barium salt water treatment system, for the removal of sulfate ions in water. Different from barium chloride dihydrate, barium chloride is non-toxic, but it is still necessary to pay attention to the safe operation of its dissolved liquid and dust.

In general, barium chloride dihydrate and barium chloride are quite different in physical properties, chemical properties, application fields and safety. Barium chloride dihydrate is commonly used in chemical laboratories, pharmaceutical manufacturing and industrial fields, but it has certain toxicity. Barium chloride is widely used in industrial production, with good solubility and hygroscopicity, but its own non-toxic. Therefore, when using these two compounds, it is necessary to select suitable materials according to the actual situation, and strictly abide by the safety operation procedures to ensure personal safety and the smooth progress of experiments or production.

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