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{{chembox | Watchedfields = changed| verifiedrevid = 470635987| ImageFile = Portion of ZnI2 lattice (ICD Code2404).png| ImageSize = | ImageName = Zinc bromide| ImageFile1 = | ImageSize1 = | ImageName1 = Zinc bromide| IUPACName = Zinc bromide| OtherNames = Zinc(II) bromide,Zinc dibromide |Section1={{Chembox Identifiers

correct|chemspider}}| ChemSpiderID = 22790

correct|FDA}}| UNII = OO7ZBU9703| InChI = 1/2BrH.Zn/h2*1H;/q;;+2/p-2| InChIKey = VNDYJBBGRKZCSX-NUQVWONBAG| SMILES = Br[Zn]Br

correct|chemspider}}| StdInChI = 1S/2BrH.Zn/h2*1H;/q;;+2/p-2

correct|chemspider}}| StdInChIKey = VNDYJBBGRKZCSX-UHFFFAOYSA-L| CASNo = 7699-45-8

correct|CAS}}| PubChem = 24375| RTECS = ZH1150000 }}|Section2={{Chembox Properties| Formula = ZnBr2| MolarMass = 225.198 g/mol| Appearance = white crystalline powder hygroscopic| Density = 4.20 g/cm3 (20 °C) 4.22 g/cm3 (25 °C)

ethanol>alcohol, ether, acetone, tetrahydrofuran| Solubility = 388 g/100 mL (0 °C) 675 g/100 mL (100 °C, for the anhydrous material)| MeltingPtC = 394| BoilingPtC = 697| RefractIndex = 1.5452 }}|Section7={{Chembox Hazards| ExternalSDS = External MSDS| FlashPt = Non-flammable| NFPA-H = 3| NFPA-F = 0| NFPA-R = 0| NFPA-S = }}|Section8={{Chembox Related| OtherAnions = Zinc fluoride,Zinc chloride,Zinc iodide| OtherCations = Cadmium bromide,Mercury(II) bromide,Calcium bromide }} }}Zinc bromide (ZnBr2) is an inorganic compound with the chemical formula ZnBr2. It is a colourless salt that shares many properties with zinc chloride (ZnCl2), namely a high solubility in water forming acidic solutions, and good solubility in organic solvents. It is hygroscopic and forms a dihydrate ZnBr2·2H2O.BOOK, 10.1002/14356007.a04_405.pub2, Bromine Compounds, Ullmann’s Encyclopedia of Industrial Chemistry, 2013, Yoffe, David, Frim, Ron, Ukeles, Shmuel D., Dagani, Michael J., Barda, Henry J., Benya, Theodore J., Sanders, David C., 1–31, 978-3-527-30385-4, Production ZnBr2 · 2H2O is prepared by treating zinc oxide or zinc metal with hydrobromic acid.BOOK, F. Wagenknecht, R. Juza, Zinc bromide, Handbook of Preparative Inorganic Chemistry, 2nd Ed., G. Brauer, Academic Press, 1963, NY, NY, 1, 1071, ZnO + 2{{nbsp}}HBr + H2O → ZnBr2·2H2O Zn + 2{{nbsp}}HBr → ZnBr2 + H2 The anhydrous material can be produced by dehydration of the dihydrate with hot CO2 or by reaction of zinc metal and bromine. Sublimation in a stream of hydrogen bromide also gives the anhydrous derivative. Structure ZnBr2 crystallizes in the same structure as ZnI2: four tetrahedral Zn centers share three vertices to form “super-tetrahedra” of nominal composition {Zn4Br10}2−, which are linked by their vertices to form a three-dimensional structure.JOURNAL, Crystal Structure of Anhydrous Zinc Bromide, Chieh, C., White, M. A., Zeitschrift für Kristallographie, 1984, 166, 3–4, 189–197, 10.1524/zkri.1984.166.3-4.189, 1984ZK....166..189C, The dihydrate ZnBr2 · 2H2O can be described as ([Zn(H2O)6]2+)2([Zn2Br6]2-).JOURNAL, Zinc Bromide Dihydrate ZnBr2·2H2O: a Double-Salt Structure, Duhlev, R., Brown, I. D., Faggiani, R., Acta Crystallographica C, 1988, 44, 10, 1696–1698, 10.1107/S0108270188006584, 1988AcCrC..44.1696D, Gaseous ZnBr2 is linear in accordance with VSEPR theory with a Zn-Br bond length of 221 pm.BOOK, Wells A. F., 1984, Structural Inorganic Chemistry, 5th, Oxford Science Publications, 0-19-855370-6, Uses Zinc bromide is mainly used in servicing oil and natural gas wells, solutions pf zinc bromide are used to displace drilling mud when transitioning from the drilling phase to the completion phase or in well workover operations. The extremely dense brine solution gives the fluid its weight of 20 pounds/gallon, which makes it especially useful in holding back flammable oil and gas particles in high pressure wells. However, the high acidity and osmolarity cause corrosion and handling problems. Crews must be issued slicker suits and rubber boots because the fluid is so dehydrating.WEB,www.glossary.oilfield.slb.com/Display.cfm?Term=zinc%20bromide, Zinc Bromide - drilling fluids, Oilfield Glossary, Schlumberger, It is the electrolyte in the zinc bromide battery.Zinc bromide solutions can be used as a transparent shield against radiation. The space between two glass panes is filled with a strong aqueous solution of zinc bromide with a very high density, to be used as a window on a hot cell. This type of window has the advantage over lead glass in that it will not darken as a result of exposure to radiation. All glass will darken slowly over time due to radiation, however this is especially true in a hot cell, where exceptional levels of radiation are present. The advantage of an aqueous salt solution is that any radiation damage will last less than a millisecond, so the shield will undergo self-repair.JOURNAL,hps.org/meetings/midyear/abstract240.html, The Georgia Institute of Technology High-Dose Gamma Irradiation Facility, 32nd Annual Midyear Meeting - Creation and Future Legacy of Stockpile Stewardship Isotope Production, Applications, and Consumption. Poster Session, Albuquerque, NM, Blaylock, D. P., Abu-Jawdeh, E., Health Physics Society, January 1999, In the laboratory In organic chemistry anhydrous ZnBr2 is sometimes used as a Lewis acid. Safety Safety considerations are similar to those for zinc chloride, for which the toxic dose for humans is 3–5 g. See also Zinc chloride Zinc fluoride Zinc iodide Cadmium bromide References {{reflist}}{{Zinc compounds}}{{bromides}}