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7647-15-6

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Identification

Name
Sodium bromide
CAS
7647-15-6
Synonyms
BROMIDE
BROMIDE ION CHROMATOGRAPHY STANDARD
BROMIDE STANDARD
BROMIDE STANDARD SOLUTION
SODIUM BROMIDE
SODIUM BROMIDE 40
SODIUM BROMIDE 45
Bromide salt of sodium
bromidesaltofsodium
bromnatrium
bromuredesodium
Hydrobromic acid sodium salt
NaBr
Sedoneural
Sodium bromide (NaBr)
sodiumbromide(nabr)
sodiumbromide[na3br3]
trisodiumtribromide
SODIUM BROMIDE TECHNICAL GRADE
SODIUM BROMID
EINECS(EC#)
231-830-3
Molecular Formula
BrNa
MDL Number
MFCD00003475
Molecular Weight
102.89
MOL File
7647-15-6.mol

Chemical Properties

Appearance
white powder
mp 
755 °C(lit.)

bp 
1390 °C
density 
3,203 g/cm3
vapor pressure 
1 mm Hg ( 806 °C)

refractive index 
1.6412
Fp 
1390°C
solubility 
H2O: 1 M at 20 °C, clear, colorless

Stability:
Stable. Incompatible with strong acids. Hygroscopic.
Water Solubility 
905 g/L (20 ºC)
Sensitive 
Hygroscopic
Merck 
14,8594
CAS DataBase Reference
7647-15-6(CAS DataBase Reference)
NIST Chemistry Reference
Sodium bromide(7647-15-6)
EPA Substance Registry System
7647-15-6(EPA Substance)

Safety Data

Hazard Codes 
Xi
Risk Statements 
R36/37/38:Irritating to eyes, respiratory system and skin .
Safety Statements 
S24/25:Avoid contact with skin and eyes .
S25:Avoid contact with eyes .
S36:Wear suitable protective clothing .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
WGK Germany 
1

RTECS 
VZ3150000


3
HS Code 
28275100
Safety Profile
Moderately toxic by ingestion. Experimental reproductive effects. Incompatible with acids, alkaloidal and heavy-metal salts. When heated to decomposition it emits toxic fumes of Brand NazO. See also BROMIDES.
Hazardous Substances Data
7647-15-6(Hazardous Substances Data)

Raw materials And Preparation Products

Raw materials
Sodium hydroxide-->Sodium carbonate-->Bromine-->Urea-->Hydrogen bromide-->Lithium bromide
Preparation Products
Phenethyl alcohol-->(S)-(-)-7,7'-BIS[DI(3,5-DIMETHYLPHENYL)PHOSPHINO]-2,2',3,3'-TETRAHYDRO-1,1'-SPIROBIINDANE-->(R)-7,7'-BIS(DIPHENYLPHOSPHINO)-1,1'-SPIROBIINDANE-->(S)-1,1'-SPIROBIINDANE-7,7'-DIOL-->(11AR)-(+)-10,11,12,13-TETRAHYDRODIINDENO[7,1-DE:1',7'-FG][1,3,2]DIOXAPHOSPHOCIN-5-BIS(R)-1PHENYLETHYL]AMINE-->(11AR)-(+)-10,11,12,13-TETRAHYDRODIINDENO[7,1-DE:1',7'-FG][1,3,2]DIOXAPHOSPHOCIN-5-PHENOXY-->2-Amino-4-chloropyridine-->2-[3-(2H-Benzotriazol-2-yl)-4-hydroxyphenyl]ethyl methacrylate-->4-Bromotoluene-->(11AR)-(+)-10,11,12,13-TETRAHYDRODIINDENO[7,1-DE:1',7'-FG][1,3,2]DIOXAPHOSPHOCIN-5-DIMETHYLAMINE-->3-CARBOXY-4-CHLOROBENZENEBORONIC ACID-->1,1'-SPIROBIINDANE-7,7'-DIOL-->4-Aminobenzotrifluoride-->3-Azetidinecarboxylic acid-->4-Chloro-2-fluorophenylboronic acid-->2-Aminopyridin-4-ol-->3-METHYLGLUTARIC ACID-->5-BROMO-8-METHOXY-2-METHYL-QUINOLINE-->Styrene oxide-->TRICOSANOIC ACID-->4-Chloropyridine-2-carboxamide-->N-(Tetrahydro-2-furoylcarbonyl)piperazine hydrobromide-->2-BROMO-5-METHYLBENZOIC ACID-->14-METHYLPENTADECANOIC ACID-->OCTACOSANOIC ACID-->2-Bromo-6-methylbenzoic acid-->6-ACETHYOXY-8-METHYL-8-AZABICYCLO(3.2.1)OCTAN-3-ONE-->LIGNOCERIC ACID-->1,3-CYCLOHEXADIENE-->N,N,N',N'-Tetramethyl-p-phenylenediamine dihydrochloride-->1-N-PROPYLPIPERAZINE DIHYDROBROMIDE-->4-(BROMOMETHYL)-3-NITROBENZOIC ACID-->4-BUTOXYANILINE-->2-Bromo-5-nitrothiazole-->2-(2-Bromoethyl)-1,3-dioxolane-->Probenecid-->Dyclonine hydrochloride

Material Safety Data Sheet(MSDS)

Hazard Information

Hazard
Toxic by inhalation and ingestion.

Questions And Answer

Physical and chemical properties
sodium bromide is a colorless cubic crystal or white granular powder, and belongs to isometric system. It is odorless, and has slightly bitter and briny taste but high toxicity. It is easily to absorb moisture and caking but without deliquescence. It 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 sodium bromide crystal will be precipitated out at 51°C with dihydrate compound forming at temperature lower than 51 °C. Its 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. It 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 sodium bromine for heating to produce hydrogen bromine.
sodium bromide
Bromide ions can enhance the inhibitor process of brain cortex, and promote their concentration. Therefore, medically it can be used as tranquilizers, and hypnotic or anticonvulsant drugs. When human swallow or inhale the compounds, it will cause harm to central nervous system, brain, and eye while causing irritation response of skin, eyes and also the respiratory tract.
Chemical Properties
Sodium bromide is a colorless cubic crystal or white granular powder. It is odorless, and has slightly bitter and briny taste but high toxicity. It is easily soluble in water (at 100 °C, the solubility in 100ml water solubility is 121g), but slightly soluble in alcohol.
Uses
  • 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; it can also be used in synthetic fragrances and other chemicals.
  • Photographic industry applies it for the preparation of liquid photosensitive film. It is medically used for the production of diuretics and sedatives. Perfume industry uses it for the production of synthetic fragrances. Printing and dyeing industry use it as a brominating agent. In addition, it can be also be used for organic synthesis and so on.
  • Sodium bromide is used for the photographic industry, spices, pharmaceutical and printing industries.
  • It is used for the reagents for analysis, and can also be used for the synthesis of inorganic and organic compounds and pharmaceutical industry.
  • It is sued for photographic film, medicines, perfumes, dyes and other industries.
  • It can be applied to determination of trace cadmium and Manufacturing of bromide. It can also be applied to inorganic and organic synthesis, photogravure and pharmaceuticals.

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 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 sodium bromide. the reaction is:
HBr + NaOH → NaBr + H2O
Toxicity
We should prevent its 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 sodium bromide, we should also rinse with plenty of water.

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