Lithiumbromid

Bezeichnung:Lithiumbromid

CAS-Nr7550-35-8

Englisch Name:Lithium bromide

CBNumberCB4302867

SummenformelBrLi

Molgewicht86.85

MOL-Datei7550-35-8.mol

Synonyma

Lithiumbromid

Lithiumbromid physikalisch-chemischer Eigenschaften

Schmelzpunkt	550 °C (lit.)
Siedepunkt	1265 °C
Dichte	1.57 g/mL at 25 °C
Flammpunkt	1265°C
storage temp.	Inert atmosphere,Room Temperature
Löslichkeit	Methanol (Very Slightly, Heated), Water (Slightly)
pka	2.64[at 20 ℃]
Aggregatzustand	powder
Farbe	White
Wichte	3.464
Geruch (Odor)	odorless
Wasserlöslichkeit	61 g/100 mL (25 º C)
Sensitive	Hygroscopic
Merck	14,5526
Stabilität	Stable. Anhydrous form is extremely hygroscopic.
LogP	-0.37 at 25℃
CAS Datenbank	7550-35-8(CAS DataBase Reference)
NIST chemische Informationen	Lithium bromide(7550-35-8)
EPA chemische Informationen	Lithium bromide (7550-35-8)

Sicherheit

Kennzeichnung gefährlicher	Xi
R-Sätze:	32-40-43-36/37 -36/37/38 -36/38
S-Sätze:	22-26-60-24/25-36/37-36/37/39
WGK Germany	2
RTECS-Nr.	OJ5755000
F	3
TSCA	Yes
HS Code	28275900

Gefahreninformationscode (GHS)

Lithium bromide Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R22:Gesundheitsschädlich beim Verschlucken.
R36/37:Reizt die Augen und die Atmungsorgane.
R12:Hochentzündlich.
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
S-Sätze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
Chemische Eigenschaften
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.
Physikalische Eigenschaften
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.
Verwenden
Lithium Bromide finds use as a desiccant in industrial air conditioning systems and industrial drying agents.
Verwenden
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.
Verwenden
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.
Definition
ChEBI: A lithium salt in which the counterion is bromide. The anhydrous salt forms cubic crystals similar to common salt.
synthetische
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.
Allgemeine Beschreibung
LiBr/Chlorotrimethylsilane reagent participates in the conversion of alcohols to bromides.
Flammability and Explosibility
Non flammable
läuterung methode
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 Upstream-Materialien And Downstream Produkte

Lithiumbromid Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

7550-35-8, Lithium bromide Verwandte Suche:

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