Goldtrichlorid

Bezeichnung:Goldtrichlorid

CAS-Nr13453-07-1

Englisch Name:Gold(III) chloride

CBNumberCB5853063

SummenformelAuCl3

Molgewicht303.33

MOL-Datei13453-07-1.mol

Synonyma

Goldtrichlorid

Goldtrichlorid physikalisch-chemischer Eigenschaften

Schmelzpunkt	254°C
Siedepunkt	265 °C
Dichte	3.9 g/mL at 25 °C
storage temp.	Keep in dark place,Inert atmosphere,Room temperature
Löslichkeit	DMSO (Sparingly), Methanol (Very Slightly)
Aggregatzustand	Crystalline Powder, Crystals or Chunks
Farbe	yellow
Wasserlöslichkeit	soluble
Sensitive	Hygroscopic
Merck	14,4521
Solubility Product Constant (Ksp)	pKsp: 24.5
CAS Datenbank	13453-07-1(CAS DataBase Reference)
EPA chemische Informationen	Gold chloride (AuCl3) (13453-07-1)

Sicherheit

Kennzeichnung gefährlicher	C,Xi
R-Sätze:	36/37/38
S-Sätze:	26-36/37/39-45-37/39-36
RIDADR	UN 3260 8/PG 3
WGK Germany	3
RTECS-Nr.	MD5420000
F	3-8-10
TSCA	Yes
HazardClass	8
PackingGroup	III
HS Code	28433000

Gefahreninformationscode (GHS)

Gold(III) chloride Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
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.
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).
S37/39:Bei der Arbeit geeignete Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
Chemische Eigenschaften
orange-red to dark red crystals
Physikalische Eigenschaften
Red monoclinic crystals; deliquesces; density 4.7 g/cm³; sublimes at 180°C (760 torr); highly soluble in water; soluble in alcohol and ether; slightly soluble in liquid ammonia.
Verwenden
It is important to note that the Cl2 used here must be hot chlorine gas.
Verwenden
Photography, gold plating, special inks, medicine, ceramics (enamels, gilding, and painting porcelain), glass (gilding, ruby glass), manufacture of finely divided gold and purple of Cassius.
Verwenden
Gold(III) chloride is used in colloidal gold solutions, in photography and as a print toning agent(gold toning), starting solution to form other gold compounds and a precursor for preparation of ultra pure gold metal. It is used in electroplating and electroless plating as an anode in an electric cell. Gold(III) chloride acts as a gold catalyst and cell body stains for bright field and dark field microscopy.
Definition
A compound prepared by dissolving gold in aqua regia. The bright yellow crystals (chloroauric acid) produced on evaporation are heated to form dark red crystals of gold(III) chloride. The chloride decomposes easily (at 175°C) to give gold(I) chloride and chlorine; at higher temperatures it decomposes to give gold and chlorine. Gold(III) chloride is used in photography. It exists as a dimer, Au₂Cl₆.
synthetische
Gold(III) chloride may be produced by the combination of metallic gold with chlorine gas at elevated temperatures:
2Au + 3Cl2 → 2AuCl3
It may be prepared in the laboratory by the reaction of iodine monochloride with metallic gold:
2Au + 6ICl → 2AuCl3 + 3I2
The compound should be stored tightly closed and protected from light.
Reaktionen
When heated at 254ºC, gold(III) chloride decomposes to gold(I) chloride and chlorine.
Passing hydrogen sulfide into an ether solution of the compound yields gold(III) sulfide, Au2S3.
A similar reaction occurs when alcoholic solutions of gold(III) chloride and hydrogen selenide are mixed, producing gold(III) selenide, Au2Se3, a black amorphous solid.
Gold(III) chloride may be reduced readily to metallic gold by common reducing agents. Thus, reduction with stannous chloride in dilute aqueous medium yields colloidal gold in which the atom carries a negative charge. “Cassius purple” is produced from the oxidation of tin to form H2Sn(OH)6, which protects colloidal gold from coagulation, imparting ruby red color to the solution.
Gold(III) chloride reacts with ammonia forming a gold(III)-nitrogen derivative, an explosive product, known as, “fulminate of gold”. Reaction with Grignard reagent, RMgX in ether yields dialkyl gold(III) chloride, R2AuCl3, which may be converted readily to other dialkyl gold(III) complexes by replacement of the chloride anion by a donor ligand.
Allgemeine Beschreibung
The structure of gold chloride is monoclinic in nature. It sublimes at elevated temperatures.
Sicherheitsprofil
Experimental reproductive effects. Human mutation data reported. Reaction with ammonia or ammonium salts yields fulminating gold, a heat-, friction-, and impact-sensitive explosive similar to mercury and silver fulminates. See also GOLD COMPOUNDS and CHLORIDES. When heated to decomposition it emits toxic fumes of Cl-.

Gold(III) chloride Upstream-Materialien And Downstream Produkte

Goldtrichlorid Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

13453-07-1, Gold(III) chloride Verwandte Suche:

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