Diammoniumhexachloroiridat

Bezeichnung:Diammoniumhexachloroiridat

CAS-Nr16940-92-4

Englisch Name:Ammonium hexachloroiridate(IV)

CBNumberCB8178118

SummenformelCl6H4IrN-

Molgewicht422.96

MOL-Datei16940-92-4.mol

Synonyma

Diammoniumhexachloroiridat

Diammoniumhexachloroiridat physikalisch-chemischer Eigenschaften

Schmelzpunkt	decomposes [STR93]
Dichte	2.86 g/mL at 25 °C(lit.)
storage temp.	under inert gas (nitrogen or Argon) at 2-8°C
Aggregatzustand	Crystalline Powder
Wichte	2.856
Farbe	Red-black
Wasserlöslichkeit	Soluble in water.
Sensitive	Hygroscopic
Stabilität	hygroscopic
CAS Datenbank	16940-92-4(CAS DataBase Reference)
EPA chemische Informationen	Iridate(2-), hexachloro-, diammonium, (OC-6-11)- (16940-92-4)

Sicherheit

Kennzeichnung gefährlicher	Xn
R-Sätze:	36/38-22-20/21/22
S-Sätze:	26-36/37/39-45
RIDADR	1759
WGK Germany	3
RTECS-Nr.	BP5295000
TSCA	Yes
HazardClass	8
PackingGroup	III
Toxizität	rat,LD50,oral,1852mg/kg (1852mg/kg),Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. Vol. 21(7), Pg. 55, 1977.

Gefahreninformationscode (GHS)

Ammonium hexachloroiridate(IV) Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R36/38:Reizt die Augen und die Haut.
R22:Gesundheitsschädlich beim Verschlucken.
R20/21/22:Gesundheitsschädlich beim Einatmen,Verschlucken und Berührung mit der 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).
Chemische Eigenschaften
Olive Green Crystals
Verwenden
Iridium complexes are generated from ammonium hexachloroiridate.
Verwenden
Ammonium Hexachloroiridate(IV) is a reagent used for research applications and is used for catalytic production on hydrogen.
It is a key intermediate in the isolation of iridium from ores. Most other metals form insoluble sulfides when aqueous solutions of their chlorides are treated with hydrogen sulfide, but [IrCl6]2? resists ligand substitution. Upon heating under hydrogen, the solid salt converts to the metal:
(NH4)2[IrCl6] + 2 H2→ Ir + 6 HCl + 2 NH3
Definition
ChEBI: Ammonium hexachloroiridate is a salt comprising separate ammonium cations and octahedral [IrCl6](2-) anions. It contains a hexachloroiridate(2-).
Flammability and Explosibility
Non flammable
läuterung methode
It is precipitated several times from aqueous solution by saturation with ammonium chloride. This removes any palladium and rhodium. It is then washed with ice-cold water and dried over conc H2SO4 in a vacuum desiccator. If osmium or ruthenium is present, it can be removed as the tetroxide by heating with conc HNO3, followed by conc HClO4, until most of the acid has been driven off. (This treatment is repeated. ) The near-dry residue is dissolved in a small amount of water and added to excess NaHCO3 solution and bromine water. On boiling, iridic (but not platinic) hydroxide is precipitated. It is dissolved in HCl and precipitated several times, then dissolved in HBr and treated with HNO3 and HCl to convert the bromides to chlorides. Saturation with ammonium chloride and cooling precipitates ammonium hexachloroiridate which is filtered off and purified as above [Woo & Yost J Am Chem Soc 53 884 1931].

Ammonium hexachloroiridate(IV) Upstream-Materialien And Downstream Produkte

Diammoniumhexachloroiridat Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

16940-92-4, Ammonium hexachloroiridate(IV) Verwandte Suche:

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