Sodium bromate (NaBrO3) (link:https://www.bloomtechz.com/synthetic-chemical/sodium-bromate-powder-cas-7789-38-0.html) is a colorless crystalline, white particle or crystalline powder with no odor. Decompose and release oxygen at 381 ℃. Soluble in water, insoluble in ethanol, and the aqueous solution is neutral. It has good solubility in water and can quickly dissolve and produce proton exchange reactions. Its solubility increases with increasing temperature. It is oxidizing and can cause combustion or explosion by friction with organic compounds, sulfides, and easily oxidizing substances. Irritating. It is relatively stable at room temperature, but decomposition reactions occur at high temperatures or under heating conditions, generating sodium chloride and oxygen. The thermal conductivity is low, making it a poor thermal conductor. It has good transmittance to ultraviolet and visible light, so it can be used as an optical material. Chemical reagents used for the preparation of inorganic chemical products and the determination of phenols; Commonly used as an oxidant, laboratory bromine generator, cosmetic cold perm agent; Used industrially as a wool finishing agent, as well as for the extraction and purification of precious and heavy metals; Used for volumetric analysis and can also be used as an oxidant; Used for volumetric analysis and also as an oxidant; Printing and dyeing auxiliaries, daily chemicals such as perm agents, chemical reagents, and cleaning agents.
The molecular structure analysis of Sodium Bromate is a detailed study and description of the structure and composition of the compound. It includes analyzing the types, quantities, connection modes, and spatial arrangement of atoms in molecules.
1. Molecular formula and chemical formula:
The molecular formula of Sodium bromate is NaBrO3, which contains three elements: sodium (Na), bromine (Br), and oxygen (O). The chemical formula can reveal the relative proportion of each element in the compound.
2. Extended and electronic structure:
The extended formula of NaBrO3 can further demonstrate the connection between atoms in molecules. Na forms an ionic bond with Br, while Br forms a covalent bond with O. Due to its high electron affinity and electronegativity, oxygen will form covalent bonds with two bromine atoms. Overall, the Sodium bromate molecule contains one Na+ion and one BrO3- ion.
3. Crystal structure:
A single sodium bromate molecule is composed of positive and negative ions. In the crystal structure, these ions are connected to each other through ion bonds and form a crystal structure in a specific arrangement. Usually, NaBrO3 forms a hexagonal crystal structure.
4. Molecular geometry:
The geometric structure of a sodium bromate molecule can be described by the bond angle between atoms within the molecule. In the BrO3 ion, the bromine atom (Br) forms a triangular cone structure with the central oxygen atom (O). The distance between the bromine atom and the central oxygen atom is farther than the other two oxygen atoms.
5. Molecular properties:
Sodium bromate has some special molecular properties. It is a colorless, odorless solid that can be dissolved in water. This compound has oxidizing properties and can decompose to produce oxygen under thermal conditions.
The modern naming of Sodium bromate began in the late 19th to early 20th century, when scientists conducted extensive research on compounds containing bromine elements.
In the early days, after the discovery of bromine, chemists began to explore its compounds. Bromic acid is a common bromine compound with the chemical formula HBrO3, where H is the hydrogen element, Br is the bromine element, and O is the oxygen element. Bromic acid has strong oxidizing properties and is a strong acid, so scientists have begun to study its salt compounds.
In the process of studying bromate, scientists discovered that sodium bromate is a highly oxidizing compound that can oxidize other substances under acidic conditions. Therefore, sodium bromate has been widely used in fields such as oxidants and bleaches.
In order to better describe the properties and uses of sodium bromate, scientists began naming it. Considering that sodium bromate is composed of sodium and bromate ions, they adopted the name "sodium bromate". Among them, "sodium" represents cations in the salt, and "bromate" represents anions in the salt.
Over time, the name "sodium bromate" gradually became widely accepted and used, and became the standard name for this compound. Although sodium bromate is also referred to as sodium bromide in some literature, the term 'sodium bromate' is more commonly used.
In short, the origin of the name "sodium bromate" can be traced back to the early 20th century, when scientists began studying compounds of bromine and discovered that sodium bromate has high oxidation resistance and uses. Over time, the name "sodium bromate" gradually became widely accepted and used, becoming the standard name for this compound.
Sodium bromate has strong oxidizing properties and can participate in various chemical reactions.
1. Reactions with organic matter:
Sodium bromate can undergo oxidative addition reactions with unsaturated bonds (such as double or triple bonds) in organic compounds, activating organic molecules. For example, sodium bromate can oxidize phenol to quinone compounds, as well as fatty acids or ketone compounds to α- Ketonic acid.
2. Reaction with reducing agent:
Sodium bromate can undergo redox reactions with reducing agents such as mercaptans and phenols. For example, sodium bromate can react with thiourea under alkaline conditions to obtain bromide and sulfur oxide.
3. Reactions with ammonium compounds:
Sodium bromate can react with ammonium compounds such as ammonia gas and ammonium chloride to form ammonium bromide and hypobromate. For example, sodium bromate can react with ammonia to obtain ammonium bromide and hypobromate.
4. Reactions with flammable substances:
Sodium bromate can react with flammable substances such as sulfur and phosphorus to form explosive mixtures. For example, sodium bromate can react with sulfur to obtain sodium sulfate and hypobromate.
5. Contact with sulfuric acid may cause combustion:
Sodium bromate undergoes chemical reactions in sulfuric acid and may cause combustion. Therefore, contact with sulfuric acid should be avoided when using sodium bromate.
In summary, the strong oxidizing properties of sodium bromate enable it to participate in various chemical reactions. When using sodium bromate, attention should be paid to safety and avoid contact with incompatible substances. At the same time, understanding the reaction properties of sodium bromate helps to better understand and apply its uses.