Tetrachlorogoldsure

Bezeichnung:Tetrachlorogoldsure

CAS-Nr16903-35-8

Englisch Name:Chloroauric acid

CBNumberCB4148823

SummenformelAuCl4H

Molgewicht339.79

MOL-Datei16903-35-8.mol

Synonyma

Tetrachlorogoldsure

Tetrachlorogoldsure physikalisch-chemischer Eigenschaften

Schmelzpunkt	30°C
Siedepunkt	100 °C
Dichte	3.9 g/mL at 25 °C
storage temp.	2-8°C
Löslichkeit	H₂O: soluble
Aggregatzustand	Liquid
Farbe	yellow
Wasserlöslichkeit	Miscible with water, alcohol, ester, ether and ketone.
Sensitive	Light Sensitive
Merck	13,4537
Expositionsgrenzwerte	ACGIH: Ceiling 2 ppm OSHA: Ceiling 5 ppm(7 mg/m3) NIOSH: IDLH 50 ppm; Ceiling 5 ppm(7 mg/m3)
Stabilität	Stable. Hygroscopic. Light sensitive. Incompatible with strong bases, sulfides, cyanides, carbonates.
InChIKey	FAGGMVVGLLFOQV-UHFFFAOYSA-J
CAS Datenbank	16903-35-8(CAS DataBase Reference)
EPA chemische Informationen	Aurate(1-), tetrachloro-, hydrogen, (SP-4-1)- (16903-35-8)

Sicherheit

Kennzeichnung gefährlicher	C,Xi
R-Sätze:	36/37/38-43-34-36/38-23
S-Sätze:	26-36/37/39-45-36/37
RIDADR	UN 3260 8/PG 3
WGK Germany	3
RTECS-Nr.	CK6330000
F	3-8-10
TSCA	Yes
HazardClass	8
PackingGroup	III

Gefahreninformationscode (GHS)

Chloroauric acid Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
R43:Sensibilisierung durch Hautkontakt möglich.
R34:Verursacht Verätzungen.
R36/38:Reizt die Augen und die Haut.
R23:Giftig beim Einatmen.
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).
S36/37:Bei der Arbeit geeignete Schutzhandschuhe und Schutzkleidung tragen.
Chemische Eigenschaften
golden to yellowish brown crystals or powder
Verwenden
Hydrogen tetrachloroaurate(III) acts as a precursor used in the purification of gold by electrolysis. It is also used for the recovery, concentration, purification and analytical determination of gold. It acts as a key starting material for the preparation of gold compounds. It plays an important role as a catalyst in the preparation of 2-arylbenzoxazoles.
Verwenden
The HCl plus the HNO2 (hydrochloric and nitric acids) are combined to produce agua regia acid, which is the only acid that can dissolve gold.
läuterung methode
It is obtained as a dark red crystalline mass by dissolving Au in aqua regia and evaporating. When sublimed at 180o, the crystals are ruby red. The anhydrous salt is hygroscopic, soluble in H2O but sparingly soluble in EtOH and Et2O. Aurochloric acid is formed when AuCl3 is dissolved in HCl. [Diemer J Am Chem Soc 35 553 1913, Glemser & Sauer Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol II p1 056 1965.]
Properties and Applications
Chloroauric acid is an orange-yellow crystal that is very easy to deliquesce and soluble in water. It decomposes into gold when heated. The aqueous solution of chloroauric acid contains square planar [AuC14]- ions, from which many salts containing planar square ions [AuX4]- (X=F, Cl, Br, I, CN, SCN, NO3) can be prepared. It can be used for local gold plating of semiconductor and integrated circuit lead frames, gold plating of printed circuit boards, electronic connectors and other electrical contact components. It can also be used to make red glass. It is used as an analytical reagent, specifically for microanalysis of clocks and absolutes and measurement of alkaloid composition. It is also used for photographic materials. Chloroauric acid salts, especially sodium chloroaurate NaAuCl4 (prepared by the reaction of AuCls and NaCl), can replace toxic mercury (II) salts as catalysts for alkyne reactions. At the same time, chloroauric acid has important applications in the preparation of nano-level gold. Generally, the fluorescent nano-gold prepared by direct reduction of chloroauric acid with a reducing agent has important applications in analytical chemistry.

Chloroauric acid Upstream-Materialien And Downstream Produkte

Tetrachlorogoldsure Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

16903-35-8, Chloroauric acid Verwandte Suche:

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