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NaBr (Sodium bromide) is an inorganic sodium salt having bromide as the counterion.
NaBr (Sodium bromide) is a bromide salt and an inorganic sodium salt.
NaBr (Sodium bromide) is used in photographic processingand in analytical chemistry.
CAS: 7647-15-6
MF: NaBr
MW: 102.89
EINECS: 231-599-9
NaBr (Sodium bromide) occurs in seawater at an average concentration of 0.008%.
NaBr (Sodium bromide) also is found naturally in some salt deposits.
NaBr (Sodium bromide) is used in photography for preparing light-sensitive silver bromide emulsions.
NaBr (Sodium bromide) also is used as a bleaching and disinfecting agent for water treatement in swimming pools, health spas, and hot tubs.
Other uses are as a catalyst for partial oxidation of hydrocarbons, for increasing density of aqueous drillng fluids for oil wells, as an electrolyte component in sodium-halogen batteries, as a brominating agent in organic synthesis, in preparing bromide salts, and as a laboratory reagent.
NaBr (Sodium bromide) is used in medicine as a sedative and hypnotic.
NaBr (Sodium bromide) is a brominating agent mainly used in organic synthetic reactions as a bromide source.
NaBr (Sodium bromide) can be used as a substitute for potassium bromide.
NaBr (Sodium bromide) is an inorganic compound with the formula NaBr.
NaBr (Sodium bromide) is a high-melting white, crystalline solid that resembles sodium chloride.
NaBr (Sodium bromide) is a widely used source of the bromide ion and has many applications.
NaBr (Sodium bromide) is a chemical compound of sodium and bromine.
NaBr (Sodium bromide) was widely used as an anticonvulsant and a sedative in the late 19th and early 20th centuries, but today is only used in veterinary medicine, as an antiepileptic medication for dogs and cats.
NaBr (Sodium bromide) is also used in photography.
NaBr (Sodium bromide) is a halogen element with the symbol Br and atomic number 35.
NaBr (Sodium bromide) does not occur naturally, but bromine salts can be found in crustal rock.
NaBr (Sodium bromide) is a chemical compound that exists as a white crystalline solid at room temperature.
NaBr (Sodium bromide) is inorganic, soluble in water, and has the molecular formula NaBr.
Because NaBr (Sodium bromide) is comprised of ionically bonded sodium atoms to bromine atoms, it is often used as a source of bromide ions.
NaBr (Sodium bromide) is synthesized by combining sodium hydroxide (NaOH) with hydrogen bromide (HBr), where HBr+NaOH→H2O+NaBr.
When combined, the salts of NaBr (Sodium bromide) crystallize around 50.7° Celsius; without water, it crystallizes above that temperature, and with water, NaBr (Sodium bromide) crystallizes below this temperature.
NaBr (Sodium bromide) is an inorganic compound with the formula NaBr.
NaBr (Sodium bromide) is a high-melting white, crystalline solid that resembles sodium chloride.
NaBr (Sodium bromide) is a widely used source of the bromide ion and has many applications.
NaBr (Sodium bromide) Chemical Properties
Melting point: 755 °C (lit.)
Boiling point: 1390 °C
Density: 3,203 g/cm3
Vapor pressure: 1 mm Hg ( 806 °C)
Refractive index: 1.6412
Fp: 1390°C
Storage temp.: Store at room temperature.
Solubility: H2O: 1 M at 20 °C, clear, colorless
Form: Powder
Specific Gravity: 3.21
Color: White
PH: 5.74 (430g/l, H2O, 22.5℃)
Water Solubility: 905 g/L (20 ºC)
Sensitive: Hygroscopic
λmax: λ: 260 nm Amax: 0.01
λ: 280 nm Amax: 0.01
Merck: 14,8594
BRN: 3587179
Stability: Stable. Incompatible with strong acids. Hygroscopic.
InChIKey: JHJLBTNAGRQEKS-UHFFFAOYSA-M
LogP: 0 at 25℃
CAS DataBase Reference: 7647-15-6(CAS DataBase Reference)
NIST Chemistry Reference: NaBr (Sodium bromide) (7647-15-6)
EPA Substance Registry System: NaBr (Sodium bromide) (7647-15-6)
NaBr (Sodium bromide) is a colorless cubic crystal or white granular powder, and belongs to isometric system.
NaBr (Sodium bromide) is odorless, and has slightly bitter and briny taste but high toxicity.
NaBr (Sodium bromide) is easily to absorb moisture and caking but without deliquescence.
NaBr (Sodium bromide) is slightly soluble in alcohol and easily soluble in water (at 100 °C, the solubility in 100ml water solubility is 121g), its aqueous solution is neutral with electronic conductivity.
The anhydrous NaBr (Sodium bromide) crystal will be precipitated out at 51°C with dihydrate compound forming at temperature lower than 51 °C.
NaBr (Sodium bromide)'s bromide ion can be substituted by fluorine, and chlorine. Under acidic conditions, it can be oxidized by oxygen and release free bromine; this process is taken advantage of by industry for producing bromine.
NaBr (Sodium bromide) can have reaction with dilute sulfuric acid to produce hydrogen bromide.
However, hydrobromic acid is a strong acid which can’t be produced through the reaction with dilute sulfuric acid and can only made through high-boiling point acid to make low-boiling point acid.
However, we should avoid to use concentrated sulfuric acid which has strong oxidation effect and thus converting bromine (-1) into bromine element and release reddish-brown gas.
This method can be used to identify sodium iodide (Heating sodium iodide and concentrated sulfuric acid together will release red-purple gases), Thereby, we can only take the concentrated phosphoric acid together with NaBr (Sodium bromide) for heating to produce hydrogen bromine.
NaBr (Sodium bromide) can enhance the inhibitor process of brain cortex, and promote their concentration.
Therefore, medically NaBr (Sodium bromide) can be used as tranquilizers, and hypnotic or anticonvulsant drugs.
When human swallow or inhale the compounds, NaBr (Sodium bromide) will cause harm to central nervous system, brain, and eye while causing irritation response of skin, eyes and also the respiratory tract.
NaBr (Sodium bromide) is a colorless cubic crystal or white granular powder.
NaBr (Sodium bromide) is odorless, and has slightly bitter and briny taste but high toxicity.
NaBr (Sodium bromide) is easily soluble in water (at 100 °C, the solubility in 100ml water solubility is 121g), but slightly soluble in alcohol.
NaBr (Sodium bromide) is a white, hygroscopic, crystalline solid with a bitter, saline taste.
NaBr (Sodium bromide) is water soluble,with a melting point of 758°C (1400 OF).
NaBr (Sodium bromide) is used in medicine as a sedative and in photography in the preparation of silver bromide emulsion on photographic plates or films.
White crystalline powder or granules; saline and slight bitter taste; cubic structure; density 3.20 g/cm3; melts at 747° C; vaporizes at 1,390°C; vapor pressure 1 torr at 806°C and 5 torr at 903°; highly soluble in methanol, 16.7 g/100mL.
The dihydrate is a white crystalline solid; density 2.18 g/cm3; decomposes at 36°C; soluble in water; sparingly soluble in methanol.
Uses
NaBr (Sodium bromide) can be used as raw material in the preparation of liquid photographic film; medically as sedative, the brominating agent in printing and dyeing; NaBr (Sodium bromide) can also be used in synthetic fragrances and other chemicals.
Photographic industry applies NaBr (Sodium bromide) for the preparation of liquid photosensitive film.
NaBr (Sodium bromide) is medically used for the production of diuretics and sedatives.
Perfume industry uses NaBr (Sodium bromide) for the production of synthetic fragrances.
Printing and dyeing industry use NaBr (Sodium bromide) as a brominating agent.
In addition, NaBr (Sodium bromide) can be also be used for organic synthesis and so on.
NaBr (Sodium bromide) is used for the photographic industry, spices, pharmaceutical and printing industries.
NaBr (Sodium bromide) is used for the reagents for analysis, and can also be used for the synthesis of inorganic and organic compounds and pharmaceutical industry.
NaBr (Sodium bromide) is sued for photographic film, medicines, perfumes, dyes and other industries.
NaBr (Sodium bromide) can be applied to determination of trace cadmium and Manufacturing of bromide.
NaBr (Sodium bromide) can also be applied to inorganic and organic synthesis, photogravure and pharmaceuticals.
NaBr (Sodium bromide) is a high-tonnage chemical and one of the most important of the bromide salts (NaBr2).
High-purity grades are required in the formulation of silver bromide emulsions for photography.
The compound, usually in combination with hypochlorites, is used as a bleach, notably for cellulosics.
The production of NaBr (Sodium bromide) simply involves the neutralization of HBr with NaOH or with sodium carbonate or bicarbonate.
NaBr (Sodium bromide) is an inorganic compoiund used as a catalyst in the photoinduced polymerization of acrylates.
NaBr (Sodium bromide) is the most useful inorganic bromide in industry.
NaBr (Sodium bromide) is also used as a catalyst in TEMPO-mediated oxidation reactions.
Medicine
Also known as Sedoneural, NaBr (Sodium bromide) has been used as a hypnotic, anticonvulsant, and sedative in medicine, widely used as an anticonvulsant and a sedative in the late 19th and early 20th centuries.
NaBr (Sodium bromide)'s action is due to the bromide ion, and for this reason potassium bromide is equally effective.
In 1975, NaBr (Sodium bromide) were removed from drugs in the U.S. such as Bromo-Seltzer due to toxicity.
Petroleum Industry
Because of its high solubility in water (943.2 g/L or 9.16 mol/L, at 25 °C) sodium bromide is used to prepare dense drilling fluids used in oil wells to compensate a possible overpressure arising in the fluid column and to counteract the associated trend to blow out.
The presence of the sodium cation also causes the bentonite added to the drilling fluid to swell, while the high ionic strength induces bentonite flocculation.
Production Method
Urea reduction: dissolve soda ash (sodium carbonate), urea in hot water, and fed into the reactor; gradually add bromine for reaction and generate NaBr (Sodium bromide).
Then further add active carbon for decolorization; further undergo filtration, evaporation, crystallization, centrifugal separation, and drying to obtain sodium bromide products.
The reaction is as following：
3Br2 + 3Na2CO3 + NH2CONH2 → 6NaBr + 4CO2 ↑ + N2 ↑ + 2H2O
Neutralization method: add about 40% hydrobromic acid into the reactor, stir and slowly add 40% caustic solution for neutralization to Ph 7.5~8 for generating sodium bromide; after isolated by centrifugation, evaporation, crystallization and centrifuged again separation, then we can obtain the final product of NaBr (Sodium bromide).
The reaction is:
HBr + NaOH → NaBr + H2O
Preparation
NaBr (Sodium bromide) can be prepared by several methods.
Pure salt can be made by neutralizing sodium hydroxide or sodium carbonate with hydrobromic acid.
The solution is evaporated for crystallization: NaOH + HBr → NaBr + H2O NaCO3 + HBr → NaBr + CO2 + H2O
NaBr (Sodium bromide) can be made by passing bromine through an aqueous solution of sodium hydroxide or carbonate in the presence of a reducing agent, such as ammonia, hydrazine, activated charcoal, or Fe2+ ion.
A typical method involves adding iron to bromine water to form ferrosoferric bromide, Fe[FeBr5].
This double salt is dissolved in excess water followed by addition of sodium carbonate.
The product mixture is filtered and the filtrate is evaporated to crystallize NaBr (Sodium bromide).
The overall reaction may be written as follows: 3Fe + 4Br2 + 4Na2CO3 → 8NaBr + FeCO3 + Fe2(CO3)3
Another method involves adding excess bromine to a solution of sodium hydroxide.
This forms NaBr (Sodium bromide) and bromate.
NaBr (Sodium bromide) solution is evapoated to dryness.
The bromate is reduced to bromide by heating with carbon: 3Br2 + 2NaOH + H2O → NaBr + NaBrO3 + 4HBr.
Toxicity
We should prevent NaBr (Sodium bromide)'s ingestion and inhalation; avoid the contact of eye and skin with it.
If intake or inhalation happens, adverse reactions include dizziness, nausea, and vomiting can occur.
In these cases, we should immediately consult a doctor for treatment.
Upon being splashed in the eyes, we should immediately rinse with fresh water for 20 min; upon skin contact with NaBr (Sodium bromide), we should also rinse with plenty of water.
Synonyms
SODIUM BROMIDE
7647-15-6
Sedoneural
Sodiumbromide
Bromide salt of sodium
Sodium bromide (NaBr)
Trisodium tribromide
Bromnatrium
sodium;bromide
NaBr
Natrum bromatum
MFCD00003475
NSC-77384
LC1V549NOM
CHEMBL1644694
DTXSID3034903
CHEBI:63004
NSC 77384; Sanibrom 40
Bromnatrium [German]
Caswell No. 750A
Sodium bromide [JAN]
HSDB 5039
EINECS 231-599-9
NSC 77384
UNII-LC1V549NOM
EPA Pesticide Chemical Code 013907
Sodium bromide [USP:JAN]
Sodium Bromide Powder
Sodium bromide (TN)
Sodium bromide (JP17)
Sodium bromide, ultra dry
WLN: NA E
EC 231-599-9
SODIUM BROMIDE [MI]
Sodium bromide, ACS reagent
SODIUM BROMIDE [HSDB]
NATRUM BROMATUM [HPUS]
Density Standard 1251 kg/m3
SODIUM BROMIDE [MART.]
DTXCID1014903
SODIUM BROMIDE [USP-RS]
SODIUM BROMIDE [WHO-DD]
Sodium bromide, p.a., 99.0%
NSC77384
Tox21_301343
BR1200
SODIUM BROMIDE [EP MONOGRAPH]
AKOS024438090
SODIUM BROMIDE [USP MONOGRAPH]
Sodium bromide, BioXtra, >=99.0%
Sodium bromide, photo grade, compacted
NCGC00255632-01
Sodium bromide, ACS reagent, >=99.0%
Sodium bromide, ReagentPlus(R), >=99%
CAS-7647-15-6
CS-0013794
FT-0645125
S0546
Sodium bromide, 99.9955% (metals basis)
Sodium bromide, BioUltra, >=99.5% (AT)
Isotopic standard for bromine, NIST SRM 977
Sodium bromide, SAJ first grade, >=99.0%
D02055
Q15768
Sodium bromide, >=99.99% trace metals basis
Sodium bromide, Vetec(TM) reagent grade, 98%
Sodium bromide, JIS special grade, 99.5-100.3%
Density Standard 1251 kg/m3, H&D Fitzgerald Ltd. Quality
Sodium bromide, United States Pharmacopeia (USP) Reference Standard
Sodium bromide, anhydrous, beads, -10 mesh, 99.999% trace metals basis
Sodium bromide, anhydrous, free-flowing, Redi-Dri(TM), ACS reagent, >=99%
Sodium bromide, anhydrous, free-flowing, Redi-Dri(TM), ReagentPlus(R), >=99%
