Is bromine soluble in water?

Bromine is the only nonmetallic element that is liquid at room temperature. It is one of the six elements in the periodic table that are liquid at or near room temperature. It is a dark reddish-brown fuming volatile liquid. It has an irritating smell, and its smoke can strongly irritate eyes and respiratory tract. Volatile rapidly in the air.

Bromine is easily soluble in ethanol, ether, chloroform, carbon disulfide, carbon tetrachloride, concentrated hydrochloric acid and bromide aqueous solution, but soluble in water. The melting point of bromine is -7.2℃ and the boiling point is 58.8℃

There is an important condition for the dissolution of water-soluble polymers, that is, the solubility parameters of solute and solvent must be similar, but this is only a necessary condition for dissolution, not a sufficient condition, and the influence of polymer crystal structure should be considered. ?

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Bromides of calcium, sodium and zinc occupy a place in the bromine market. These salts produce dense compounds in water, which can be used as drilling fluid, sometimes called clear salt water.

2. Bromine can also be used to produce bromine-containing vegetable oil, which is used as emulsion in many orange soft drinks. This compound was widely used after it was discovered in1940s. Until the middle of1970s, Britain and America restricted its use and developed alternative emulsions. But in 1997, American soft drinks can still contain bromine-containing vegetable oil.

3. Ethidium bromide (EtBr) is used as DNA stain in gel electrophoresis.

4. For compounds with high refractive index, bromine-containing resin types have higher refractive index and lower dispersion.

5. Compounds for water purification and disinfection.

6. Potassium bromide is used by some photographers to prevent fogging (undesirable reduction of silver).

7. The second step of silver plate exposure for silver plate photography is to use bromine vapor, and then treat the plate with mercury vapor. The role of bromine is to strengthen the photosensitivity of the silver disk that has just been iodinated.

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