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Bromide

Bromide
Br-.svg
Bromide ion.svg
Names
Systematic IUPAC name
Bromide
Identifiers
24959-67-9 N
3D model (Jmol) Interactive image
3587179
ChEBI CHEBI:15858 YesY
ChEMBL ChEMBL11685 YesY
ChemSpider 254 YesY
14908
KEGG C01324 N
PubChem 259
Properties
Br
Molar mass 79.904 g mol−1
Thermochemistry
82 J·mol−1·K−1
−121 kJ·mol−1
Pharmacology
N05CM11 (WHO)
Pharmacokinetics:
12 d
Related compounds
Other anions
Fluoride

Chloride
Iodide

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N  (what is YesYN ?)
Infobox references

Chloride
Iodide

A bromide is a chemical compound containing a bromide ion or ligand. This is a bromine atom with an ionic charge of −1 (Br); for example, in caesium bromide, caesium cations (Cs+) are electrically attracted to bromide anions (Br) to form the electrically neutral ionic compound CsBr. The term "bromide" can also refer to a bromine atom with an oxidation number of −1 in covalent compounds such as sulfur dibromide (SBr2).

Bromide is present in typical seawater (35 PSU) with a concentration of around 65 mg/L, which is around 0.2% of all dissolved salts. Seafoods and deep sea plants generally have high levels of bromide, while foods derived from land have variable amounts.

One can test for a bromide ion by adding excess dilute HNO3 followed by dilute aqueous AgNO3 solution. The formation of creamy silver bromide precipitate confirms the existence of bromides.

Bromide compounds, especially potassium bromide, were frequently used as sedatives in the 19th and early 20th century. Their use in over-the-counter sedatives and headache remedies (such as Bromo-Seltzer) in the United States extended to 1975, when bromides were withdrawn as ingredients, due to chronic toxicity.

This use gave the word "bromide" its colloquial connotation of a boring cliché, a bit of conventional wisdom overused as a calming phrase, or verbal sedative.


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