Sodium Bromide

Sodium bromide is a compound with the formula NaBr. It is inorganic. It is a highly volatile, white-colored, crystalline solid that looks similar to sodium chloride. This salt is used widely for the usage of the bromide radical. This salt has many applications in the chemist and drug industry.  Its solubility does not allow it to occur naturally in the rocks or naturally occurring minerals. Some chemical compounds known as halides, chlorides and iodides also get extracted while withdrawing from the ocean water. Anticonvulsant properties of the bromide salts are exhibited within the other salts derived from the ocean water, and it’s the most common salt of the hydrobromic acid.

Sodium Bromide Structure – NaBr

(images will be uploaded soon)

Sodium is a positively charged radical, which is very unstable because it is a highly reactive metal. Even to protect it for its reactivity, it is kept inside kerosene oil. So, this element reacts with the negatively charged bromide radical to form an ionic bond together to form a sodium bromide compound. Now, this ionic bond is mostly stable, and the NaBr  compound name together becomes sodium bromide.  The chemical name of nabr is sodium bromide. The sodium bromide structure is linear, and the sodium bromide structure is polar because the positive and negative radicals create a polarity where electrons get shared on the more electronegative radical that is the bromide liberal in sodium bromide.

Physical Properties of Sodium Bromide (NaBr)




White  and crystalline solid

Covalently-Bond Unit


Heat capacity

298.15 K, 




In water, it is readily soluble.

These were the physical properties of the sodium bromide salt, which helps the chemists and druggists to make the use of sodium bromide salt.

The physical properties of sodium bromide are also required by the chemical industries based on which they manufacture it for lab purposes.

Chemical Properties of Sodium Bromide

1. The reaction between Sodium bromide and sulphuric acid results in sodium sulphate and hydrogen bromide. The chemical equation is provided below.

NaBr + H2SO4 → NaHSO4 + HBr

 Here, it is clearly shown that the sulphuric acid attacks the more electronegative part of the sodium bromide ion and the hydrogen atom settles in. Therefore, one hydrogen atom from the sulphuric acid binds with the sodium ion and brings down the oxidation state of the sodium ion. Therefore, we can easily say that it is a redox reaction happening, which is one of the chemical properties of the sodium bromide, and these chemical properties can be used as an application of sodium bromide.

2. The reaction between Sodium bromide and silver nitrate solution results in the formation of silver bromide and sodium nitrate. The chemical equation is provided below.

AgNO3 + NaBr → AgBr + NaNO3

Here, it is clearly stated that the silver radical in a solution becomes so reactive that it displaces the sodium ion and goes to its site. The sodium, again being a reactive metal ion, bonds with the nitrate radical to give rise to the sodium nitrate compound. It is again a redox reaction as the oxidation number of sodium is getting altered.  Therefore, we can easily say that it is a redox reaction happening, which is one of the chemical properties of the sodium bromide, and these chemical properties can be used as an application of sodium bromide.

Uses of NaBr

  •  Like any other bromides, it is used as a sedative for medical purposes. In many health problems, insomnia, sedatives are used to cure it.

  • In the oil and gas drilling industry, sodium bromide is a principal consumer because of its displacing properties, which can be used for the extraction of oils.

  • As the bromide ion is getting replaced by the ion of the more positively charged ions, sodium bromide is used as an antiseptic. Hence sodium bromide has good and extensive use in medicinal purposes. In the pharmaceutical industry, too, the sodium bromide is used as the antiseptic and as anti-germ material.

These were some important uses of sodium bromide.

Solved Example

1. What kind of salt is sodium bromide?

Sodium bromide is a white, fully crystal-like. It is a compound made of sodium and bromide (a charged bromine atom). Its appearance resembles very closely to regular table salt.

Fun Fact

It is interesting that besides humans, the use of sodium bromide is prevalent for pets like dogs and cats. Veterinary doctors regularly use sodium bromide for the medication of pets like dogs and cats. It is a very interesting fact that sodium bromide is also used for hypnosis . It has a huge impact on the psychological effect in the body.

FAQ (Frequently Asked Questions)

1. What is the pH of Sodium Bromide?

Sodium Bromide. It is available in the color of white crystals, granules, or powder/white, cubic crystal options and it tastes a bit bad. Its other properties include Boiling Point that is 1390°C, Melting Point, that is 755°C, Density/Specific Gravity, that is of 3.21, pH ranges between 6.5-8.0 and solubility in alcohol is moderate). In water, it is 94.6 g/100 g water at 25°C.  It is the physical property of sodium chloride. It is essential to know the ph. of the sodium bromide because it helps the doctors to know where and in which part of the body the use of sodium bromide is going to be. Now, we have to look after the ph. Factor so that no skin irritation in the living beings occurs and sodium chloride can be entirely safe for use.

2. What is the Formula for Sodium Bromate?

Sodium bromate is an inorganic compound with the chemical formula of NaBrO3, and it is another salt of the sodium of bromic acid. It is a very oxidizing agent that can increase the oxidation state number of the element to which it has been associated.   Bromine can change the valency and can react with sodium in multiple ways. Now it can be stated that we need to check the oxidation numbers in which the two radicals are acting to name the formula of the newly formed compounds based on their valency. Due to the properties like such, both sodium bromate and sodium bromide possess similar properties.