Description Physical properties Uses Preparation
ChemicalBook > CAS DataBase List > Lithium bromide

Lithium bromide

Description Physical properties Uses Preparation
Product Name
Lithium bromide
CAS No.
7550-35-8
Chemical Name
Lithium bromide
Synonyms
LiBr;LITHIUM HALIDE;lithium bromide solution;Lithium bromide anhydrous;Anhydrous lithiuM broMide;Lithium bromide anhydrous, free-flowing, Redi-Dri, ReagentPlus, >=99%;LiBr 99%min;Lithiumbromid;thiuM broMide;ithium bromide
CBNumber
CB4302867
Molecular Formula
BrLi
Formula Weight
86.85
MOL File
7550-35-8.mol
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Lithium bromide Property

Melting point:
550 °C (lit.)
Boiling point:
1265 °C
Density 
1.57 g/mL at 25 °C
vapor pressure 
1 hPa ( 748 °C)
Flash point:
1265°C
storage temp. 
Inert atmosphere,Room Temperature
solubility 
Methanol (Very Slightly, Heated), Water (Slightly)
pka
2.64[at 20 ℃]
form 
powder
Specific Gravity
3.464
color 
White
PH
7 (20°C, 10g/L)
Odor
odorless
Water Solubility 
61 g/100 mL (25 º C)
Sensitive 
Hygroscopic
Merck 
14,5526
Stability:
Stable. Anhydrous form is extremely hygroscopic.
LogP
-0.37 at 25℃
CAS DataBase Reference
7550-35-8(CAS DataBase Reference)
NIST Chemistry Reference
Lithium bromide(7550-35-8)
EPA Substance Registry System
Lithium bromide (7550-35-8)
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Safety

Hazard Codes 
Xi
Risk Statements 
32-40-43-36/37 -36/37/38 -36/38
Safety Statements 
22-26-60-24/25-36/37-36/37/39
WGK Germany 
2
RTECS 
OJ5755000
F 
3
TSCA 
Yes
HS Code 
28275900
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H315Causes skin irritation

H317May cause an allergic skin reaction

H319Causes serious eye irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P272Contaminated work clothing should not be allowed out of the workplace.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
213225
Product name
Lithium bromide
Purity
ReagentPlus , ≥99%
Packaging
100g
Price
$89.2
Updated
2025/07/31
Sigma-Aldrich
Product number
213225
Product name
Lithium bromide
Purity
ReagentPlus , ≥99%
Packaging
2kg
Price
$535
Updated
2025/07/31
Sigma-Aldrich
Product number
1.05669
Product name
Lithium bromide
Purity
extra pure
Packaging
1KG
Price
$440
Updated
2025/07/31
TCI Chemical
Product number
L0210
Product name
Lithium Bromide
Purity
>99.0%(T)
Packaging
25g
Price
$85
Updated
2025/07/31
TCI Chemical
Product number
L0210
Product name
Lithium Bromide
Purity
>99.0%(T)
Packaging
100g
Price
$151
Updated
2025/07/31
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Lithium bromide Chemical Properties,Usage,Production

Description

Lithium bromide (LiBr) is the chemical compound of lithium and bromine. It has extreme hygroscopic, making it a suitable desiccant in the air conditioning systems. It can also be used in absorption chilling together with water. It is also useful in the organic synthesis such as forming adduct with some pharmaceuticals. In medical fields, it can be used as a sedative and used for the treatment of bipolar disorder. It can be manufactured by the treatment of lithium carbonate with hydrobromic acid. 

Physical properties

Lithium bromide is a white, crystalline, deliquescent solid. Aqueous solutions of lithium bromide have unusually low water vapor pressures. The following hydrates are formed: LiBr·H2O, LiBr-2H2O, LiBr-3H2O and LiBr-5H2O. All hydrates have incongruent melting points. Concentrated aqueous solutions of lithium bromide can dissolve significant quantities of polar organic substances such as cellulose. Lithium bromide, like lithium chloride, is soluble in polar organic solvents such as alcohols.

Uses

Lithium bromide is used in absorption, refrigeration and air-conditioning systems. A highly concentrated solution of the salt is an efficient absorbent of water vapor. The vapor pressure of such solution is very low. Other applications include the use of the salt as a swelling agent for wool, hair and other organic fibers; as a catalyst in dehydrohalogenation reactions; and as a sedative and hypnotic in medicine.

Preparation

Lithium bromide is prepared by neutralizing lithium hydroxide or lithium carbonate with an aqueous solution of hydrobromic acid, followed by concentration and crystallization:
LiOH + HBr → LiBr + H2O
Li2CO3 + HBr → LiBr + CO2 + H2O
The salt is usually obtained as hydrates. Anhydrous lithium bromide is obtained by heating hydrated salt under vacuum.

Chemical Properties

White cubic crystals; hygroscopic; refractive index 1.784; density 3.464 g/cm3; melts at 550°C; vaporizes at 1,265°C; highly soluble in water (145g/100g at 4°C), much greater solubility in hot water (254g/100g at 90°C); soluble in methanol, ethanol and ether; slightly soluble in pyridine; vapor pressure of aqueous solutions at 52 and 68% concentrations at 25°C are 5 and 0.7 torr, respectively.

Physical properties

White cubic crystals; hygroscopic; refractive index 1.784; density 3.464 g/cm3; melts at 550°C; vaporizes at 1,265°C; highly soluble in water (145g/100g at 4°C), much greater solubility in hot water (254g/100g at 90°C); soluble in methanol, ethanol and ether; slightly soluble in pyridine; vapor pressure of aqueous solutions at 52 and 68% concentrations at 25°C are 5 and 0.7 torr, respectively.

Uses

Lithium Bromide finds use as a desiccant in industrial air conditioning systems and industrial drying agents.

Uses

It is used for reconstitution of brines, as swelling agent for proteins and as electrolyte component in lithium battery. Used as brazing and welding flux. Lithium bromide is used as catalyst for the condensation of carbonyl compounds with active methylene compounds in the absence of solvent, operating medium for air-conditioning and industrial drying system. Also used in manufacturing pharmaceuticals and alkylation process. It also plays an important role in the synthesis of dihydropyrimidinones.

Uses

As humectant, in air-conditioning systems. An aqueous solution of lithium bromide containing about 50 % lithium bromide is used as an absorbent in large-scale absorption air conditioning equipment. Lithium bromide is also used in limited amounts by the pharmaceutical industry for dehydrobromination of organic compounds to form olefins.

Definition

ChEBI: A lithium salt in which the counterion is bromide. The anhydrous salt forms cubic crystals similar to common salt.

Preparation

Lithium bromide may be prepared by the reaction of lithium hydroxide monohydrate or lithium carbonate with hydrobromic acid. The resultant solution of lithium bromide may be evaporated and cooled to crystallize a hydrate of lithium bromide, the composition of which depends on the final temperature. The lithium bromide hydrate may be filtered from the mixture and carefully dried by the application of heat in a vacuum desiccator to avoid melting the hydrate.

General Description

LiBr/Chlorotrimethylsilane reagent participates in the conversion of alcohols to bromides.

Flammability and Explosibility

Non flammable

Purification Methods

Crystallise it several times from water or EtOH, then dry it under high vacuum for 2 days at room temperature, followed by drying at 100o. Its solubility in H2O is 167% at ~20o, and 250% at ~100o. It is deliquescent and should be stored in a tightly stoppered vessel.

Lithium bromide Preparation Products And Raw materials

Raw materials

Iron filings Lithium hydroxide Lithium carbonate Hydrogen bromide Bromine

Preparation Products

2-(3-BROMO-PROPYL)-1H-BENZOIMIDAZOLE 1-METHOXY-3-TRIMETHYLSILOXY-1,3-BUTADIENE Sodium bromide TRIS(TRIMETHYLSILYL)SILANE Lithium borohydride Tri-tert-butylphosphine
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Lithium bromide Suppliers

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View Lastest Price from Lithium bromide manufacturers

Shaanxi Dideu Medichem Co. Ltd
Product
Lithium bromide 7550-35-8
Price
US $0.10/KG
Min. Order
1KG
Purity
99.9%+
Supply Ability
2000 kgs
Release date
2025-09-13
Hebei Chuanghai Biotechnology Co., Ltd
Product
Lithium bromide 7550-35-8
Price
US $10.00/KG
Min. Order
100KG
Purity
99%
Supply Ability
100 mt
Release date
2024-11-29
Watson Biotechnology Co.,Ltd
Product
Lithium Bromide Anhydrous 7550-35-8
Price
US $0.00-0.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
20MT
Release date
2024-09-03

7550-35-8, Lithium bromideRelated Search:

D(+)-Glucose Lithium chloride Clidinium bromide Ethidium bromide Sodium bromate Zirconium dioxide Lithium carbonate Lithium Bromide hydrate LITHIUM BROMIDE HYDRATE, 99 Potassium bromide Sodium sulfite Sodium carbonate Calcium chloride Magnesium chloride Ammonium bromide LEAD(II) BROMIDE Benzyl bromide GOLD(III) BROMIDE

  • LITHIUM HALIDE
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  • Lithium bromide, anhydrous, for analysis, 99+%
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  • Lithium bromide powder and chunks, >=99.995% trace metals basis
  • Lithium bromide puriss. p.a., >=99.0% (dried material, AT)
  • Lithium bromide ReagentPlus(R), >=99%
  • Lithium bromide Vetec(TM) reagent grade
  • LITHIUM BROMIDE (POWDER/SOLUTION)
  • Lithium bromide, anhydrous, ampuled under argon, 99.995% trace metals basis
  • Lithium bromide, anhydrous, ampuled under argon, 99.9% trace metals basis
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  • Lithium bromide solution, 1.5 M solution in THF, J&KSeal
  • Lithium bromide anhydrous, free-flowing, Redi-Dri, ReagentPlus, >=99%
  • Lithium bromide, 99.999%, extra pure
  • LithiuM broMide, 1.5 M solution in THF, SpcSeal
  • ithium bromide
  • Lithium Bromide Crystalline
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  • LITHIUM BROMIDE 1.5 M IN TETRAHYDROFURAN
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