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HomeProduct name listGOLD(I) CYANIDE

GOLD(I) CYANIDE

  • CAS NO.:506-65-0
  • Empirical Formula: CAuN
  • Molecular Weight: 222.98
  • MDL number: MFCD00003437
  • EINECS: 208-049-1
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-12-18 14:15:30
GOLD(I) CYANIDE Structural

What is GOLD(I) CYANIDE?

Chemical properties

yellow powder(s); hexagonal; odorless; iridescent in sunlight; slowly decomposes in presence of moisture [MER06]

Physical properties

Yellow hexagonal crystals; odorless; density 7.14 g/cm3; decomposes slowly in the presence of moisture or decomposes on heating; insoluble in water, alcohol and ether; also insoluble in dilute acids; soluble in aqueous solutions of potassium-, or sodium cyanide, ammonia, and aqua regia.

The Uses of GOLD(I) CYANIDE

Electrolyte in the electroplating industry

Preparation

Gold(I) cyanide may be prepared by boiling sodium aurus cyanide, Na[Au(CN)2] with hydrochloric acid:Na[Au(CN)2] + HCl AuCN + HCN + NaCl
The complex cyanide, Na[Au(CN)2] is made by dissolving gold in a dilute solution of sodium cyanide in the presence of air; or by dissolution of a gold anode in a solution of sodium cyanide during electrolysis. The solution is evaporated to separate the complex, Na[Au(CN)2], which is purified by recrystallization from water. Potassium cyanide may be used instead of sodium cyanide to prepare gold(I) cyanide.

Hazard

Toxic material.

Purification Methods

The lemon yellow powder is sparingly soluble in H2O and EtOH but soluble in aqueous NH3. It is obtained by heating H[Au(CN)2] at 110o. Wash it well with H2O and EtOH and dry it at 110o. It has an IR band at max 2239 cm -1 typical for C stretching vibration. [Glemser & Sauer Handbook of Preparative Inorg anic Chemistry (Ed. Brauer) Academic Press Vol II p 1064 1965.] CARE: may evolve HCN.

Properties of GOLD(I) CYANIDE

Melting point: ~50°C
Density  7,12 g/cm3
solubility  insoluble in H2O, ethanol, ethyl ether,dilute acid solutions
form  Powder
color  Yellow
Specific Gravity 7.14
Water Solubility  Slightly soluble in water.
Sensitive  Moisture Sensitive
Merck  14,4516
Exposure limits NIOSH: IDLH 25 mg/m3
CAS DataBase Reference 506-65-0(CAS DataBase Reference)
EPA Substance Registry System Gold cyanide (Au(CN)) (506-65-0)

Safety information for GOLD(I) CYANIDE

Signal word Danger
Pictogram(s)
ghs
Corrosion
Corrosives
GHS05
ghs
Skull and Crossbones
Acute Toxicity
GHS06
ghs
Environment
GHS09
GHS Hazard Statements H290:Corrosive to Metals
H301:Acute toxicity,oral
H310:Acute toxicity,dermal
H315:Skin corrosion/irritation
H318:Serious eye damage/eye irritation
H330:Acute toxicity,inhalation
H400:Hazardous to the aquatic environment, acute hazard
H410:Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes P260:Do not breathe dust/fume/gas/mist/vapours/spray.
P264:Wash hands thoroughly after handling.
P264:Wash skin thouroughly after handling.
P273:Avoid release to the environment.
P280:Wear protective gloves/protective clothing/eye protection/face protection.
P284:Wear respiratory protection.
P320:Specific treatment is urgent (see … on this label).
P330:Rinse mouth.
P301+P310:IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.
P304+P340:IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P405:Store locked up.

Computed Descriptors for GOLD(I) CYANIDE

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