Kupferbromid

Bezeichnung:Kupferbromid

CAS-Nr7787-70-4

Englisch Name:Cuprous bromide

CBNumberCB7311066

SummenformelBrCu

Molgewicht143.45

MOL-Datei7787-70-4.mol

Synonyma

Kupferbromid

Kupferbromid physikalisch-chemischer Eigenschaften

Schmelzpunkt	504 °C(lit.)
Siedepunkt	1345 °C
Dichte	4.71 g/mL at 25 °C(lit.)
Flammpunkt	1345°C
storage temp.	Keep in dark place,Inert atmosphere,Room temperature
Löslichkeit	insoluble in acetone
Aggregatzustand	Powder
Wichte	4.98
Farbe	Pale green to green
Wasserlöslichkeit	Soluble in hydrogen bromide, hydrochloric acid, and ammonium hydroxide. Slightly soluble in water. Insoluble in acetone.
Sensitive	Air Sensitive
Crystal Structure	Hexagonal, Wurtzite (Zincite) Structure - Space Group P 63mc
Merck	14,2659
Solubility Product Constant (Ksp)	pKsp: 8.2
Expositionsgrenzwerte	ACGIH: TWA 1 mg/m3 NIOSH: IDLH 100 mg/m3; TWA 1 mg/m3
Stabilität	Stable, but may be air or light sensitive. Incompatible with alkali metals, strong oxidizing agents.
InChIKey	NKNDPYCGAZPOFS-UHFFFAOYSA-M
CAS Datenbank	7787-70-4(CAS DataBase Reference)
NIST chemische Informationen	Copper(I) bromide(7787-70-4)
EPA chemische Informationen	Copper bromide (CuBr) (7787-70-4)

Sicherheit

Kennzeichnung gefährlicher	Xi
R-Sätze:	36/37/38-22
S-Sätze:	22-24/25-26-37/39
RIDADR	3260
WGK Germany	3
F	8-10-23
TSCA	Yes
HazardClass	8
PackingGroup	III
HS Code	28275900
Giftige Stoffe Daten	7787-70-4(Hazardous Substances Data)

Gefahreninformationscode (GHS)

Cuprous bromide Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
S-Sätze Betriebsanweisung:
S22:Staub nicht einatmen.
S24/25:Berührung mit den Augen und der Haut vermeiden.
Chemische Eigenschaften
Copper(I) bromide is a Pale green to green poeder that decomposes on exposure to light or moisture in air. It forms complexes with hydrochloric and hydrobromic acids and aqueous ammonia.
Verwenden
As catalyst for organic reactions.
Verwenden
It is used as effective catalyst for tetrahydropyranylation of alcohols. It can also be used in combination with palladium in catalytic synthesis of 3-haloindoles through annulation process. It is widely used in the synthesis of organic fine chemicals. The compound is widely used in the synthesis of organic compounds. It is also useful for copper-mediated coupling reactions. A silica gel support copper bromide hexa methyltriethylenetetramine complex has shown useful application for the atom transfer radical polymerization of methyl methacrylate in toluene.
Verwenden
Copper bromide is also known as cupric bromide, this substance was made by double decomposition when mixing aqueous solutions of copper sulfate and potassium bromide. This greenish blue solution was used as the bleaching step for intensifying collodion and gelatin negatives.
synthetische
It is prepared pyrometallurgically with copper metal and elemental bromine in a process similar to that for copper(I) chloride. It can also be produced by the reduction of copper(II) sulfate solutions in the presence of sodium bromide using metallic copper or sulfite as the reducing agent. Copper(I) bromide is used as a polymerization catalyst in organic reactions.
Allgemeine Beschreibung
White powder or crystal. Turns green to dark blue on exposure to sunlight. Sinks and mixes slowly with water.
Air & Water Reaktionen
Mixes slowly with water.
Reaktivität anzeigen
Cuprous bromide has weak oxidizing or reducing powers. Redox reactions can however still occur. The majority of compounds in this class are slightly soluble or insoluble in water. If soluble in water, then the solutions are usually neither strongly acidic nor strongly basic. These compounds are not water-reactive.
Health Hazard
INHALATION: Irritation of upper respiratory tract. EYES: Irritation of conjunctivae. SKIN: Irritation, acne-like rash (usually from prolonged exposure). INGESTION: Vomiting caused by local irritant and astringent action of ionic Cu on stomach and intestines. Pain in mouth, esophagus, and stomach. Inorganic bromides produce depression, psychoses, and mental deterioration.
läuterung methode
Purify it as for cuprous iodide but using aqueous NaBr. [Keller & Wycoff Inorg Synth II 3 1946, Glemser & Sauer in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol II p 1006 1965.]

Cuprous bromide Upstream-Materialien And Downstream Produkte

Kupferbromid Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

7787-70-4, Cuprous bromide Verwandte Suche:

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