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Sodium bromide

Physical and chemical properties Chemical Properties Uses Production method Toxicity
Sodium bromide
Sodium bromide structure
CAS No.
7647-15-6
Chemical Name:
Sodium bromide
Synonyms
NaBr;BROMIDE;Sedoneural;bromnatrium;SODIUM BROMID;Sodum bromide;Sodiumbomide ;Natriumbromid;SODIUM BROMIDE;bromuredesodium
CBNumber:
CB3181001
Molecular Formula:
NaBr
Formula Weight:
102.89
MOL File:
7647-15-6.mol

Sodium bromide 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
Flash point:
1390°C
storage temp. 
Store at room temperature.
solubility 
H2O: 1 M at 20 °C, clear, colorless
form 
Powder
color 
White
Specific Gravity
3.21
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
CAS DataBase Reference
7647-15-6(CAS DataBase Reference)
Indirect Additives used in Food Contact Substances
SODIUM BROMIDE
EWG's Food Scores
1
FDA UNII
LC1V549NOM
NIST Chemistry Reference
Sodium bromide(7647-15-6)
EPA Substance Registry System
Sodium bromide (7647-15-6)
SAFETY
  • Risk and Safety Statements
Hazard statements  H303
Hazard Codes  Xi
Risk Statements  36/37/38
Safety Statements  24/25-25-36-26-22
WGK Germany  1
RTECS  VZ3150000
3
TSCA  Yes
HS Code  28275100
Toxicity LD50 orally in rats: 3.5 g/kg (Smith, Hambourger)
NFPA 704
1
1 1

Sodium bromide price More Price(47)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 1.19896 Bromide standard solution traceable to SRM from NIST NaBr in H?O 1000 mg/l Br Certipur? 7647-15-6 500 mL $39.87 2021-03-22 Buy
Sigma-Aldrich SX0390 Sodium Bromide Meets ACS Specifications GR ACS 7647-15-6 500 g $79.73 2021-03-22 Buy
Sigma-Aldrich 220345 Sodium bromide ReagentPlus , ≥99% 7647-15-6 2.5kg $226 2021-03-22 Buy
Sigma-Aldrich 1613597 Sodium bromide United States Pharmacopeia (USP) Reference Standard 7647-15-6 1g $366 2021-03-22 Buy
Sigma-Aldrich NIST977 Isotopic standard for bromine NIST? SRM? 977 7647-15-6 0.25 g $614 2021-03-22 Buy

Sodium bromide Chemical Properties,Uses,Production

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

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.

Chemical Properties

Sodiumbromide, NaBr,is a white, hygroscopic, crystalline solid with a bitter, saline taste.It is water soluble,with a melting point of 758°C (1400 OF). Sodium bromide is used in medicine as a sedative and in photography in the preparation of silver bromide emulsion on photographic plates or films.

Physical properties

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.

Occurrence

Sodium bromide occurs in seawater at an average concentration of 0.008%. It also is found naturally in some salt deposits. It is used in photography for preparing light-sensitive silver bromide emulsions. The salt 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. Sodium bromide is used in medicine as a sedative and hypnotic.

Uses

In photography.

Uses

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 sodium bromide simply involves the neutralization of HBr with NaOH or with sodium carbonate or bicarbonate.

Preparation

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
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 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 sodium bromide and bromate. The product solution is evapoated to dryness. The bromate is reduced to bromide by heating with carbon: 3Br2 + 2NaOH + H2O → NaBr + NaBrO3 + 4HBr.

Definition

ChEBI: An inorganic sodium salt having bromide as the counterion.

Definition

sodium bromide: A white crystallinesolid, NaBr, known chiefly asthe dihydrate (monoclinic; r.d. 2.17),and as the anhydrous salt (cubic; r.d.3.20; m.p. 747°C; b.p. 1390°C). The dihydrateloses water at about 52°Cand is very slightly soluble in alcohol.Sodium bromide is prepared by thereaction of bromine on hot sodiumhydroxide solution or of hydrogenbromide on sodium carbonate solution.It is used in photographic processingand in analytical chemistry.

Hazard

Toxic by inhalation and ingestion.

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.

Purification Methods

Crystallise the bromide from water (0.86mL/g) between 50o and 0o, and dry it at 140o under vacuum (this purification may not eliminate chloride ion).

Sodium bromide Preparation Products And Raw materials

Raw materials

Preparation Products


Sodium bromide Suppliers

Global( 499)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
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View Lastest Price from Sodium bromide manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2021-10-20 Sodium bromide
7647-15-6
US $35.00 / KG 1KG 99% 9000kg/per week Hebei Lingding Biological Technology Co., Ltd
2021-10-20 Sodium bromide
7647-15-6
US $35.00 / KG 1KG 99% 9000kg/per week Hebei Lingding Biological Technology Co., Ltd
2021-09-07 Sodium bromide
7647-15-6
US $10.00 / Kg/Drum 1KG 99% 5000tons per month Wuhan Mulei New Material Technology Co. Ltd

Sodium bromide Spectrum


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