Zinkbromid

Bezeichnung:Zinkbromid

CAS-Nr7699-45-8

Englisch Name:Zinc bromide

CBNumberCB9680793

SummenformelBr2Zn

Molgewicht225.2

MOL-Datei7699-45-8.mol

Synonyma

Zinkbromid

Zinkbromid physikalisch-chemischer Eigenschaften

Schmelzpunkt	394 °C (lit.)
Siedepunkt	~670 °C/1 atm (lit.)
Dichte	4.22
Brechungsindex	1.5452
Flammpunkt	650°C
storage temp.	Store below +30°C.
Löslichkeit	Soluble in alcohol, ether, acetone and tetrahydrofuran.
Aggregatzustand	beads
Wichte	4.2012
Farbe	White to pale cream
PH	4 (H2O, 20℃)(saturated solution)
Wasserlöslichkeit	soluble, 447 g/100 mL (20 ºC)
Sensitive	Hygroscopic
Merck	14,1029
Stabilität	Stable. Forms explosive mixtures with sodium and potassium. Protect from moisture.
CAS Datenbank	7699-45-8(CAS DataBase Reference)
NIST chemische Informationen	Zinc dibromide(7699-45-8)
EPA chemische Informationen	Zinc bromide (7699-45-8)

Sicherheit

Kennzeichnung gefährlicher	C,N
R-Sätze:	34-50/53-50-51/53-43-22
S-Sätze:	26-36/37/39-45-60-61-29
RIDADR	UN 3260 8/PG 3
WGK Germany	3
RTECS-Nr.	ZH1150000
F	3-21
TSCA	Yes
HS Code	2827 59 00
HazardClass	8
PackingGroup	II
Giftige Stoffe Daten	7699-45-8(Hazardous Substances Data)

Gefahreninformationscode (GHS)

Zinc bromide Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R34:Verursacht Verätzungen.
R50/53:Sehr giftig für Wasserorganismen, kann in Gewässern längerfristig schädliche Wirkungen haben.
R50:Sehr giftig für Wasserorganismen.
S-Sätze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36/37/39:Bei der Arbeit geeignete Schutzkleidung,Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn möglich, dieses Etikett vorzeigen).
S60:Dieses Produkt und sein Behälter sind als gefährlicher Abfall zu entsorgen.
S61:Freisetzung in die Umwelt vermeiden. Besondere Anweisungen einholen/Sicherheitsdatenblatt zu Rate ziehen.
S29:Nicht in die Kanalisation gelangen lassen.
Chemische Eigenschaften
Zinc bromide is an odourless white crystalline solid or white hygroscopic powder prepared by dissolving zinc carbonate in hydrobromic acid.
Zinc chloride (ZnCl2) is a white granular crystal made by the action of hydrochloric acid on zinc.
Zinc iodide (ZnI2) is a white powder dissolving zinc in ionic acid. Zinc halides are soluble in water, alcohol, and ether. They were all used as halides for the collodion emulsion processes.
Physikalische Eigenschaften
White crystalline powder; sharp metallic taste; orthorhombic structure; refractive index 1.5452; density 4.20 g/cm³; very hygroscopic; melts at 394°C; vaporizes at 650°C; highly soluble in water 447g/100 mL at 20°C; aqueous solution acidic; very soluble in alcohol, ether, and acetone; soluble in alkali hydroxides and ammonia solution.
Verwenden
Zinc bromide is an Optimal catalyst for the stereospecific and regioselective reaction of silacyclopropanes with carbonyl compounds. It is also used to make silver bromide collodion emulsions for photography and to shield viewing windows for nuclear reactions.
synthetische
Zinc bromide is prepared by mixing barium bromide and zinc sulfate solutions. The product barium sulfate is removed by filtration and the filtrate is evaporated to obtain crystals of zinc bromide: BaBr₂ + ZnSO₄ → ZnBr₂ + BaSO₄
Zinc bromide also may be prepared by the action of zinc with hydrobromic acid followed by crystallization.
Allgemeine Beschreibung
A white crystalline noncombustible solid. The primary hazard is the threat to the environment. Immediate steps should be taken to limit its spread to the environment. Zinc bromide is used in medicine, in photography.
Air & Water Reaktionen
Hygroscopic. Water soluble
Reaktivität anzeigen
Acidic inorganic salts, such as Zinc 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.
Health Hazard
Inhalation of dust may irritate nose and throat. Ingestion can cause irritation or corrosion of the alimentary tract; if large amount is swallowed and not thrown up, drowsiness and other symptoms of bromide poisoning may occur. Contact with eyes or skin causes irritation.
Flammability and Explosibility
Non flammable
mögliche Exposition
Zinc bromide is used in photography, rayon manufacturing and medicine
Versand/Shipping
UN3260 Corrosive solid, acidic, inorganic, n.o.s., Hazard class: 8; Labels: 8-Corrosive material, Technical Name Required. UN3077 Environmentally hazardous substances, solid, n.o.s., Hazard class: 9; Labels: 9-Miscellaneous hazardous material, Technical Name Required.
läuterung methode
Heat ZnBr2 to 300o under vacuum (2x10-2 mm) for 1hour, then sublime it. [Wagenknecht & Juza Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol II p 1072 1965.]
Inkompatibilitäten
Keep away from alkali metals. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides, metallic sodium, or potassium. Store above 32 ℉/0℃.

Zinc bromide Upstream-Materialien And Downstream Produkte

Zinkbromid Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

7699-45-8, Zinc bromide Verwandte Suche:

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