Share to: share facebook share twitter share wa share telegram print page

Bromide

Bromide
Names
Systematic IUPAC name
Bromide[1]
Identifiers
3D model (JSmol)
3587179
ChEBI
ChEMBL
ChemSpider
14908
KEGG
UNII
  • InChI=1S/BrH/h1H/p-1 checkY
    Key: CPELXLSAUQHCOX-UHFFFAOYSA-M checkY
  • [Br-]
Properties
Br
Molar mass 79.904 g·mol−1
Conjugate acid Hydrogen bromide
Thermochemistry
82 J·mol−1·K−1[2]
−121 kJ·mol−1[2]
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 verify (what is checkY☒N ?)

A bromide ion is the negatively charged form (Br) of the element bromine, a member of the halogens group on the periodic table. Most bromides are colorless. Bromides have many practical roles, being found in anticonvulsants, flame-retardant materials, and cell stains.[3] Although uncommon, chronic toxicity from bromide can result in bromism, a syndrome with multiple neurological symptoms. Bromide toxicity can also cause a type of skin eruption, see potassium bromide. The bromide ion has an ionic radius of 196 pm.[4]

Natural occurrence

Bromide is present in typical seawater (35 PSU) with a concentration of around 65 mg/L, which is about 0.2% of all dissolved salts. Seafood and deep sea plants generally have higher levels than land-derived foods. Bromargyrite—natural, crystalline silver bromide—is the most common bromide mineral known but is still very rare. In addition to silver, bromine is also in minerals combined with mercury and copper.[5]

Formation and reactions of bromide

Dissociation of bromide salts

Bromide salts of alkali metal, alkaline earth metals, and many other metals dissolve in water (and even some alcohols and a few ethers) to give bromide ions. The classic case is sodium bromide, which fully dissociates in water:

NaBr → Na+ + Br

Hydrogen bromide, which is a diatomic molecule, takes on salt-like properties upon contact with water to give an ionic solution called hydrobromic acid. The process is often described simplistically as involving formation of the hydronium salt of bromide:

HBr + H2O → H3O+ + Br

Hydrolysis of bromine

Bromine readily reacts with water, i.e. it undergoes hydrolysis:

Br2 + H2O → HOBr + HBr

This forms hypobromous acid (HOBr), and hydrobromic acid (HBr in water). The solution is called "bromine water". The hydrolysis of bromine is more favorable in the presence of base, for example sodium hydroxide:

Br2 + NaOH → NaOBr + NaBr

This reaction is analogous to the production of bleach, where chlorine is dissolved in the presence of sodium hydroxide.[6]

Oxidation of bromide

One can test for a bromide ion by adding an oxidizer. One method uses dilute HNO3.

Balard and Löwig's method can be used to extract bromine from seawater and certain brines. For samples testing for sufficient bromide concentration, addition of chlorine produces bromine (Br2):[7]

Cl2 + 2 Br → 2 Cl + Br2

Applications

Bromide's main commercial value is its use in producing organobromine compounds, which themselves are rather specialized. Organobromine compounds are commonly used as brominated flame retardants.[8] Some brominated flame retardants were identified as persistent, bioaccumulative, and toxic to both humans and the environment and were suspected of causing neurobehavioral effects and endocrine disruption.[9][10]

Many metal bromides are produced commercially, including LiBr, NaBr, NH4Br, CuBr, ZnBr2 and AlBr3. AgBr is used for the largely obsolete photographic gelatin silver process.[11]

Medicinal and veterinary uses

Dermatitis reactions to bromide, all except lower right

Folk and passé medicine

Lithium bromide was used as a sedative beginning in the early 1900s. However, it fell into disfavour in the 1940s due to the rising popularity of safer and more efficient sedatives (specifically, barbiturates) and when some heart patients died after using a salt substitute (see lithium chloride).[12] Like lithium carbonate and lithium chloride, it was used as a treatment for bipolar disorder.

From 1954 - 1977, the Australian biochemist Shirley Andrews was researching safe ways to use lithium for the treatment of manic depressive illnesses while working at the Royal Park Psychiatric Hospital in Victoria. While conducting this research she discovered that bromide caused symptoms of mental illness, leading to a major reduction in its usage.[13]

Bromide compounds, especially potassium bromide, were frequently used as sedatives in the 19th and early 20th centuries. 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.[14] This use gave the word "bromide" its colloquial connotation of a comforting cliché.[15]

It has been said that during World War I, British soldiers were given bromide to curb their sexual urges.[16]

Bromide salts are used in hot tubs as mild germicidal agents to generate in situ hypobromite.

The bromide ion is antiepileptic and as bromide salt, is used in veterinary medicine in the US. The kidneys excrete bromide ions. The half-life of bromide in the human body (12 days) is long compared with many pharmaceuticals, making dosing challenging to adjust. (A new dose may require several months to reach equilibrium.) Bromide ion concentrations in the cerebrospinal fluid are about 30% of those in blood and are strongly influenced by the body's chloride intake and metabolism.[17]

Since bromide is still used in veterinary medicine in the United States, veterinary diagnostic labs can routinely measure blood bromide levels. However, this is not a conventional test in human medicine in the US since there are no FDA-approved uses for the bromide. Therapeutic bromide levels are measured in European countries like Germany, where bromide is still used therapeutically in human epilepsy.

Biochemistry

Bromide is rarely mentioned in the biochemical context. Some enzymes use bromide as substrate or as a cofactor.

Substrate

Bromoperoxidase enzymes use bromide (typically in seawater) to generate electrophilic brominating agents. Hundreds of organobromine compounds are generated by this process. Notable examples are bromoform, thousands of tons of which are produced annually in this way. The historical dye Tyrian purple is produced by similar enzymatic reactions.[18]

Cofactor

In one specialized report, bromide is an essential cofactor in the peroxidising catalysis of sulfonimine crosslinks in collagen IV. This post-translational modification occurs in all animals and bromine is an essential trace element for humans.[19]

Eosinophils need bromide for fighting multicellular parasites. Hypobromite is produced via eosinophil peroxidase, an enzyme that can use chloride but preferentially uses bromide.[20]

The average concentration of bromide in human blood in Queensland, Australia, is 5.3±1.4 mg/L and varies with age and gender.[21] Much higher levels may indicate exposure to brominated chemicals. It is also found in seafood.

Further reading

Encyclopedia articles and books

  • Christe, K., and S. Schneider (2020), Bromine, Encyclopædia Britannica.
  • Emerson, S., and J. Hedges (2011), Chemical Oceanography and the Marine Carbon Cycle, Cambridge University Press, Cambridge.
  • Glasow, R. von, and C. Hughes (2014), Biogeochemical Cycles: Bromine, Encyclopedia of Atmospheric Sciences (Second Edition).
  • Knight, J., and N. Schlager (2002), Real-life chemistry, Gale Group, Detroit, MI.
  • Millero, F. J. (2013), Chemical oceanography, Taylor & Francis, Boca Raton.
  • Newton D. E. (2010), Bromine (Revised), Chemical Elements: From Carbon to Krypton.
  • Riley, J. P., G. Skirrow, and R. Chester (1975), Chemical Oceanography, Academic Press, London
  • Ross, R. (2017), Facts About Bromine, LiveScience.
  • Steele, J. H., S. A. Thorpe, and K. K. Turekian (2001), Encyclopedia of Ocean Sciences, Academic Press, San Diego.
  • Steele, J. H., S. A. Thorpe, and K. K. Turekian (2009), Encyclopedia of Ocean Sciences, Academic Press, Boston.
  • Watkins, T. (2011), Bromine, Environmental Encyclopedia.

Peer-reviewed journal articles for bromine (Br)

  • Wisniak, J. (2002), The history of bromine from discovery to commodity, NOPR.

Peer-reviewed journal articles for bromide (Br)

  • Anbar, A. D., Y. L. Yung, and F. P. Chavez (1996), Methyl bromide: Ocean sources, ocean sinks, and climate sensitivity, AGU Journals.
  • Foti, S. C., and Naval Ordnance Lab White Oak Md (1972), Concentration of Bromide Ions in Seawater by Isotopic Exchange with Mercurous Bromide, DTIC.
  • Gribble, G. W. (2000), The natural production of organobromine compounds, Environmental Science and Pollution Research, 7(1), 37–49, doi:10.1065/espr199910.002.
  • Leri A. (2012), The Chemistry of Bromine in Terrestrial and Marine Environments, Science Highlight.
  • Magazinovic, R. S., B. C. Nicholson, D. E. Mulcahy, and D. E. Davey (2004), Bromide levels in natural waters: its relationship to levels of both chloride and total dissolved solids and the implications for water treatment, Chemosphere, 57(4), 329–335, doi:10.1016/j.chemosphere.2004.04.056.
  • Pilinis, C., D. B. King, and E. S. Saltzman (1996), The oceans: A source or a sink of methyl bromide?, Geophysical Research Letters, 23(8), 817–820, doi:10.1029/96gl00424.
  • Stemmler, I., I. Hense, and B. Quack (2015), Marine sources of bromoform in the global open ocean – global patterns and emissions, Biogeosciences, 12(6), 1967–1981, doi:10.5194/bg-12-1967-2015.
  • Suzuki, A., Lim, L., Hiroi, T., & Takeuchi, T. (2006, March 20). Rapid determination of bromide in seawater samples by capillary ion chromatography using monolithic silica columns modified with cetyltrimethylammonium ion.

References

  1. ^ "Bromide – PubChem Public Chemical Database". The PubChem Project. USA: National Center for Biotechnology Information. Archived from the original on 2012-11-03.
  2. ^ a b Zumdahl, Steven S. (2009). Chemical Principles (6th ed.). Houghton Mifflin. ISBN 978-0-618-94690-7.
  3. ^ Rattley, Matt (2012). "Ambiguous bromine". Nature Chemistry. 4 (6): 512. Bibcode:2012NatCh...4..512R. doi:10.1038/nchem.1361. PMID 22614389.
  4. ^ Shannon, R. D. (1976). "Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides". Acta Crystallographica A. 32 (5): 751–767. Bibcode:1976AcCrA..32..751S. doi:10.1107/s0567739476001551.
  5. ^ "Mindat.org - Mines, Minerals and More". www.mindat.org. Archived from the original on 2 March 2001. Retrieved 29 April 2018.
  6. ^ Chemistry of the Elements, N. N. Greenwood, A. Earnshaw, Elsevier, 2012, pp 789
  7. ^ Magazinovic, Rodney S.; Nicholson, Brenton C.; Mulcahy, Dennis E.; Davey, David E. (2004). "Bromide levels in natural waters: its relationship to levels of both chloride and total dissolved solids and the implications for water treatment". Chemosphere. 57 (4): 329–335. Bibcode:2004Chmsp..57..329M. doi:10.1016/j.chemosphere.2004.04.056. PMID 15312731. Archived from the original on 2021-05-25. Retrieved 2021-03-07.
  8. ^ Michael J. Dagani, Henry J. Barda, Theodore J. Benya, David C. Sanders: Bromine Compounds, Ullmann's Encyclopedia of Industrial Chemistry 2002, Wiley-VCH, Weinheim. doi:10.1002/14356007.a04_405
  9. ^ "Polybrominated Diphenyl Ethers (PBDEs) Action Plan Summary | Existing Chemicals | OPPT | US EPA". Archived from the original on 2015-09-01. Retrieved 2012-12-03.
  10. ^ "Brominated Flame Retardants in the Environment" (PDF). Columbia Environmental Research Center. Archived (PDF) from the original on 2016-05-08. Retrieved 2012-12-03.
  11. ^ Weaver, Gawain (2008). "A Guide to Fiber-Base Gelatin Silver Print Condition and Deterioration" (PDF). George Eastman House, International Museum of Photography and Film. Retrieved 30 October 2009.
  12. ^ Bipolar disorder Archived 2022-02-24 at the Wayback Machine. webmd.com
  13. ^ "Papers of Shirley Andrews". Trove. Retrieved 2022-10-26.
  14. ^ Adams, Samuel Hopkins (1905). The Great American fraud. Press of the American Medical Association..
  15. ^ "the definition of bromide". Dictionary.com. Archived from the original on 24 December 2016. Retrieved 21 December 2016.
  16. ^ Tanaka, Yuki (2002) Japan's Comfort Women: Sexual slavery and prostitution during World War II and the US Occupation, Routledge, p. 175. ISBN 0415194008.
  17. ^ Goodman, L. S.; Gilman, A., eds. (1970). "10. Hypnotics and Sedatives". The Biological Basis of Therapeutics (4th ed.). London: Macmillan. p. 121.
  18. ^ Gribble, Gordon W. (1999). "The diversity of naturally occurring organobromine compounds". Chemical Society Reviews. 28 (5): 335–346. doi:10.1039/a900201d.
  19. ^ McCall, A. Scott; Cummings, Christopher F.; Bhave, Gautam; Vanacore, Roberto; Page-McCaw, Andrea; Hudson, Billy G. (2014). "Bromine Is an Essential Trace Element for Assembly of Collagen IV Scaffolds in Tissue Development and Architecture". Cell. 157 (6): 1380–1392. doi:10.1016/j.cell.2014.05.009. PMC 4144415. PMID 24906154.
  20. ^ Mayeno, Arthur N.; Curran, A. Jane; Roberts, Robert L.; Foote, Christopher S. (1989-04-05). "Eosinophils Preferentially Use Bromide to Generate Halogenating Agents". Journal of Biological Chemistry. 264 (10): 5660–5668. doi:10.1016/s0021-9258(18)83599-2. ISSN 0021-9258. PMID 2538427.
  21. ^ Olszowy, HA; Rossiter, J; Hegarty, J; Geoghegan, P (1998). "Background levels of bromide in human blood". Journal of Analytical Toxicology. 22 (3): 225–30. doi:10.1093/jat/22.3.225. PMID 9602940.

Read other articles:

2008 book by Sean J. McGrath Heidegger: A (Very) Critical Introduction CoverAuthorsSean J. McGrathCountryUnited StatesLanguageEnglishSubjectMartin HeideggerPublisherEerdmansPublication date2008Media typePrint (Paperback)Pages144 pp.ISBN9780802860071 Heidegger: A (Very) Critical Introduction is a 2008 book by Sean J. McGrath, in which the author provides a theological analysis of Martin Heidegger's thought and its relation with his political endeavors.[1] Synopsis This book can be...

 

Cet article est une ébauche concernant la franc-maçonnerie et le Nebraska. Vous pouvez partager vos connaissances en l’améliorant (comment ?) selon les recommandations des projets correspondants. Temple maçonnique de NorfolkPrésentationType Temple maçonniquePatrimonialité Inscrit au NRHP (2021)LocalisationLocalisation Norfolk, comté de Madison, Nebraska  États-UnisCoordonnées 42° 01′ 56″ N, 97° 25′ 12″ Omodifier - modifier le ...

 

Федоришин Микола Іванович  Старший солдат Загальна інформаціяНародження 12 жовтня 1981(1981-10-12)ДубовеСмерть 22 жовтня 2016(2016-10-22) (35 років)Військова службаПриналежність  УкраїнаВид ЗС  Військово-морські силиРід військ  Гірська піхотаФормування  128 ОГШБрВійни / битв

Dit artikel staat op een nalooplijst. Als de inhoud op verifieerbaarheid gecontroleerd is, kan dit sjabloon verwijderd worden. Geef dat ook aan op de betreffende nalooplijst. Bekijk ook de bewerkingsgeschiedenis om te zien of anderen hier al aan gewerkt hebben. Anne van Dam Dutch Junior Open 2013 Persoonlijke informatie Nationaliteit  Nederland Geboorteplaats Arnhem Geboortedatum 2 oktober 1995 Woonplaats Arnhem Carrière Sport Golf Profdebuut januari 2015 Coach Eric der Kinderen (swing)...

 

SanggungDesaKantor Desa SanggungNegara IndonesiaProvinsiJawa TengahKabupatenSukoharjoKecamatanGatakKode pos57557Kode Kemendagri33.11.11.2001 Luas... km²Jumlah penduduk1.998 jiwaKepadatanjiwa/km² Sanggung adalah desa di kecamatan Gatak, Sukoharjo, Jawa Tengah, Indonesia. Pembagian wilayah Desa Sanggung terdiri dari dukuh: Sanggung Pendidikan Lembaga pendidikan formal yang ada di Desa Sanggung, antara lain SD Negeri Sanggung 01 SD Negeri Sanggung 02 SMK Kesehatan Citra Medika Sukoharjo P...

 

Italian actress Sarah FelberbaumBorn (1980-11-28) 28 November 1980 (age 43)London, England, UKOccupations Actress model Spouse Daniele De Rossi ​(m. 2015)​Children2 Sarah Felberbaum (born 28 November 1980) is an Italian actress. Life and career Born in London to a British mother and an American father of German-Jewish descent, Felberbaum moved to Italy with her family when she was a year old.[1] At 15 she started working as a model and appearing in co...

Scoreboard from 2023 Cricket World Cup group stage match The 2023 Cricket World Cup group stage was played in a round-robin league format, with all ten teams playing each other once in a single group, resulting in a total of 45 matches being played. The top four teams from the group progressed to the knockout stage. This format was the same as the preceding 2019 Cricket World Cup and was also used in the 1992 Cricket World Cup.[1] Points table Pos Teamvte Pld W L T NR Pts NRR Qualific...

 

2010 single by Taylor Swift Today Was a FairytaleSingle by Taylor Swiftfrom the album Valentine's Day ReleasedJanuary 19, 2010 (2010-01-19)GenreCountry popLength4:02LabelBig MachineSongwriter(s)Taylor SwiftProducer(s) Taylor Swift Nathan Chapman Taylor Swift singles chronology Fearless (2010) Today Was a Fairytale (2010) Half of My Heart (2010) 2011 re-release cover Audio videoToday Was a Fairytale on YouTube Today Was a Fairytale (Taylor's Version)Song by Taylor Swiftfrom the ...

 

School in Fork Union, Virginia, United StatesFork Union Military AcademyCadets march in formation for the annual Mothers Day Parade at Fork Union Military AcademyAddress4744 James Madison HighwayFork Union, VirginiaUnited StatesCoordinates37°45′40.7″N 78°15′37.6″W / 37.761306°N 78.260444°W / 37.761306; -78.260444InformationType Military academy College preparatory Boarding school Private school Military high school MottoBody, Mind, and SpiritEstablished1898...

Imitation or depiction of Eastern culture For the book, see Orientalism (book). Jean-Léon Gérôme, The Snake Charmer, c. 1879. Clark Art Institute. In art history, literature and cultural studies, orientalism is the imitation or depiction of aspects of the Eastern world by writers, designers, and artists from the Western world. Orientalist painting, particularly of the Middle East,[1] was one of the many specialties of 19th-century academic art, and Western literature was influenced...

 

This article is about the history of the U.S. state of Kansas. For information on the state today, see Kansas. Important dates in Kansas's historyFlag of Kansas July–August 1541 Coronado explores Kansas April 30, 1803 Louisiana Purchase Treaty signed May 30, 1854 Kansas Territory organized July 29, 1859 Constitution adopted by convention January 29, 1861 Kansas becomes 34th state August 21, 1863 Quantrill's Raid on Lawrence Spring 1879 Exodusters February 19, 1881 First state to Constitutio...

 

  لمعانٍ أخرى، طالع البدع (توضيح). قرية البدع  - قرية -  تقسيم إداري البلد  اليمن المحافظة محافظة المحويت المديرية مديرية ملحان العزلة عزلة القبلة السكان التعداد السكاني 2004 السكان 161   • الذكور 75   • الإناث 86   • عدد الأسر 31   • عدد المساكن 22 معلومات...

Saur Sepuh the SeriesGenre Laga Drama Epos BerdasarkanSaur Sepuholeh Niki KosasihDitulis olehH. Imam TantowiSkenarioFeri GumpaCeritaNiki KosasihSutradaraKarsono HadiSutradara lagaRobert SantosaPemeran Samuel Zylgwyn Cut Meyriska Sabina Katya Juan Christian Benedict Meriam Bellina Fendy Pradana Hikmal Nasution Adam Jordan Aditya Herpavi Benny Ruswandi Adjie Pangestu Ichal Muhammad Anisa Aziza Johan Morgan Penggubah lagu temaIwan SastrawijayaLagu pembukaSelamanya Aku Milikmu — Yuni SharaLagu ...

 

Ular sinar-matahari asia tenggara Ular pelangi, Xenopeltis unicolor Klasifikasi ilmiah Kerajaan: Animalia Filum: Chordata Subfilum: Vertebrata Kelas: Reptilia Ordo: Squamata Subordo: Serpentes Infraordo: Alethinophidia Famili: XenopeltidaeBonaparte, 1845 Genus: XenopeltisReinwardt, 1827 Sinonim Family: Scaptophes Fitzinger, 1843 Xenopeltina Bonaparte, 1845 Tortricidae Jan, 1863 Xenopeltidae Cope, 1864 Xenopeltinae Nopcsa, 1928[1] Genus: Xenopeltis F. Boie, 1826 Xenopeltis — Reinward...

 

Ведущее (Master) и ведомое (Slave) устройства интерфейса SPI SPI (англ. Serial Peripheral Interface, SPI bus — последовательный периферийный интерфейс, шина SPI) — последовательный синхронный стандарт передачи данных в режиме полного дуплекса, предназначенный для обеспечения простого и н�...

Professional wrestling tag team This article is about the wrestling stable. For the website, see SoCal Uncensored (website). Professional wrestling tag team SoCal UncensoredDaniels and Kazarian, then known as The Addiction, during a Q&A in San Antonio, TX, immediately prior to Glory By Honor XIIITag teamMembersChristopher Daniels[1]Frankie Kazarian / Kazarian[2]Scorpio SkyName(s)Fortune The AddictionBad InfluenceLegion of Boom[3]SoCal Uncensored (SCU)Billed heights...

 

British actor Gregg SulkinSulkin at the 2014 PaleyFest Fall TV Premiere presentation for MTV's Faking ItBorn (1992-05-29) 29 May 1992 (age 31)London, EnglandCitizenship United Kingdom United States[1] EducationHighgate SchoolOccupationActorYears active2002–present Gregg Sulkin (born 29 May 1992)[1][2] is a British actor. He made his television debut in the 2002 Doctor Zhivago mini-series. He later starred in the 2006 British film Sixty Six, and subsequently...

 

British peer and businessman (born 1961) The Most HonourableThe Marquess of Milford HavenMarquess of Milford HavenTenure14 April 1970 – presentPredecessorDavid Mountbatten, 3rd Marquess of Milford HavenOther titlesEarl of Medina (1961–1970)BornGeorge Ivar Louis Mountbatten (1961-06-06) 6 June 1961 (age 62)Spouse(s) Sarah Georgina Walker ​ ​(m. 1989; div. 1996)​ Clare Husted Steel ​ ​(m. 1997)​ Iss...

Irish saint CuimínKilcummin's churchChurchKilcumminProvinceConnachtPersonal detailsBuriedKilcummin Saint Cuimín (also Cummin, etc.) is an Irish saint associated with the parish of Kilcummin (Irish: Cill Chuimín The church of Cuimín) in the barony of Tirawley, County Mayo. Kilcummin, a headland to the west of Killala Bay, preserves the remains of a religious site, with a church of early date and a graveyard. (54°16′38″N 9°12′37″W / 54.27713°N 9.21015°W /...

 

Batalyon Infanteri Para Raider 431/Satria Setia PerkasaLambang Yonif Para Raider 431/Satria Setia PerkasaDibentuk9 Desember 1986NegaraIndonesiaCabangInfanteriTipe unitPara RaiderPeranPasukan Pemukul Reaksi Cepat Lintas UdaraBagian dariBrigif Para Raider 3/Tri Budi SaktiMarkasKariango, Desa Sudirman, Kecamatan Tanralili, Kabupaten Maros, Sulawesi SelatanJulukanYonif PR 431/SSPMotoSatria Setia PerkasaBaretHijau LumutUlang tahun9 Desember Batalyon Infanteri Para Raider 431/Satria Setia Perkasa a...

 
Kembali kehalaman sebelumnya