Cobaltdibromid

Bezeichnung:Cobaltdibromid

CAS-Nr7789-43-7

Englisch Name:COBALT(II) BROMIDE

CBNumberCB4144320

SummenformelBr2Co

Molgewicht218.74

MOL-Datei7789-43-7.mol

Synonyma

Cobaltdibromid

Cobaltdibromid physikalisch-chemischer Eigenschaften

Schmelzpunkt	678°C
Dichte	4.909 g/mL at 25 °C(lit.)
Löslichkeit	acetone: soluble(lit.)
Aggregatzustand	beads
Farbe	Green
Wichte	4.909
Wasserlöslichkeit	Soluble in water. Soluble in methyl acetate, ether, alcohol, acetone.
Sensitive	Hygroscopic
Merck	14,2435
Expositionsgrenzwerte	ACGIH: TWA 0.02 mg/m3
CAS Datenbank	7789-43-7(CAS DataBase Reference)
EPA chemische Informationen	Cobalt bromide (7789-43-7)

Sicherheit

Kennzeichnung gefährlicher	T,Xn
R-Sätze:	45-20/21/22-36/37/38-42/43
S-Sätze:	36-45-36/37/39-26-22-53
RIDADR	UN 3077 9 / PGIII
WGK Germany	3
RTECS-Nr.	GF9595000
TSCA	Yes
Giftige Stoffe Daten	7789-43-7(Hazardous Substances Data)

Gefahreninformationscode (GHS)

COBALT(II) BROMIDE Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R45:Kann Krebs erzeugen.
R20/21/22:Gesundheitsschädlich beim Einatmen,Verschlucken und Berührung mit der Haut.
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
R42/43:Sensibilisierung durch Einatmen und Hautkontakt möglich.
S-Sätze Betriebsanweisung:
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn möglich, dieses Etikett vorzeigen).
S36/37/39:Bei der Arbeit geeignete Schutzkleidung,Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S22:Staub nicht einatmen.
S53:Exposition vermeiden - vor Gebrauch besondere Anweisungen einholen.
Chemische Eigenschaften
The green anhydrous salt is prepared by dehydration of the red hexahydrate or by the action of bromine on heated cobalt. It is very soluble in water and soluble in many polar organic solvents; it deliquesces in moist air to a red solution. The hexahydrate crystallizes from aqueous solution at room temperature; it melts at 100°, evolving water and forming the purple dihydrate.
Chemische Eigenschaften
Reddish violet crystalline powder
Verwenden
Cobalt(II) bromide is used as a catalyst in organic synthesis. It is used as a precursor in the production of ethylsulfanyl)porphyrazinato)cobalt(II), which gives the possibility of intermolecular ferromagnetic interactions.
Verwenden
Used in the preparation of a new complex, Co(OESPz), which offers the possibility of intermolecular ferromagnetic interactions.1
synthetische
Cobalt(II) bromide (CoBr2) is on its anhydrous form a green solid that is soluble in water, used primarily as a catalyst in some processes. Cobalt(II) bromide can be formed as a hydrate by the reaction of cobalt hydroxide with hydrobromic acid.
Co (OH) 2 (s)+2HBr (aq)→CoBr2.6H2O(aq)
Allgemeine Beschreibung
COBALT(II) BROMIDE is a red violet crystalline solid. COBALT(II) BROMIDE is soluble in water. The primary hazard is the threat to the environment. Immediate steps should be taken to limit its spread to the environment. COBALT(II) BROMIDE is used as a catalyst in the production of other chemicals.
Air & Water Reaktionen
Water soluble.
Reaktivität anzeigen
Acidic salts, such as COBALT(II) BROMIDE, are generally soluble in water. The resulting solutions contain moderate concentrations of hydrogen ions and have pH's of less than 7.0. They react as acids to neutralize bases. These neutralizations generate heat, but less or far less than is generated by neutralization of inorganic acids, inorganic oxoacids, and carboxylic acid. They usually do not react as either oxidizing agents or reducing agents but such behavior is not impossible. Many of these compounds catalyze organic reactions. When heated to decomposition can give off highly toxic fumes of Br [USCG, 1999].
Health Hazard
SOLID: Irritating to skin and eyes. Harmful if swallowed.
Brandgefahr
Not flammable. POISONOUS FUMES ARE PRODUCED WHEN HEATED TO DECOMPOSITION. When heated to decomposition can give off highly toxic fumes of Br.
läuterung methode
Crystallise it from water (1mL/g) by partial evaporation in a desiccator. The anhydrous salt is soluble in EtOH, Me2CO, MeOAc to form blue-coloured solutions. [Glemser in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol II p 1517 1965.]

COBALT(II) BROMIDE Upstream-Materialien And Downstream Produkte

Cobaltdibromid Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

7789-43-7, COBALT(II) BROMIDE Verwandte Suche:

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