Gold | CAS No. 7440-57-5

Gold

Basic Information

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CAS Number

7440-57-5

Molecular Formula

Molecular Weight

196.97 g/mol

Chemical Classification

Basic Chemical Raw Materials Inorganic Chemicals Acids

Basic Physical Properties

Melting Point

1063 °C

Boiling Point

2808 °C

Density

19.3 g/mL at 25 °C

Water Solubility

Soluble in hot sulfuric acid and aqua regia. Insoluble in water and acid.

Flash Point

4 °C

Solubility

H2O: soluble

Refractive Index

n20/400 1.52(lit.)

SMILES

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[Au]

InChI

InChI=1S/Au

InChIKey

PCHJSUWPFVWCPO-UHFFFAOYSA-N

LogP

-0.0025

Topological Polar Surface Area

0.0 Å²

Hydrogen Bond Donor/Acceptor

0 / 0

Complexity

Safety Information

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Hazard Class

Class 6.1 Class 6.1

Stability

Stable. May react with halogens, strong oxidizing agents, ammonia, hydrogen peroxide. Reaction with ammonia or hydrogen peroxide may form explosive materials.

Sensitiveness

Light Sensitive

Synonyms & References

English

Gold
GoldpowderNmesh
gold coating quality balzers
gold, colloidal
10nm colloidal gold
E 175
GoldfoilNmmthickcagxmm
GoldshotNmmanddownsemispherical
GoldwireNmmdiacagcm
GoldfoilNmmthickcagmmxmm
Goldpowdermicronspherical
GoldpowderNmicron
Gold powder
Gold wire
Gold foil
Gold nanoparticles
Gold nanorods
Gold Ultrathin foil
Gold flake
Gold Thinfoil
Gold splatter
Gold rod
Gold sputtering target
Gold slug
Gold nanopowder
Gold shot
Gold sponge
Gold AA Std.
Gold Gemini Nanorods, CTAB Free (Wavelength 650 nm)
Gold Gemini Nanorods, CTAB Free (Wavelength 700 nm)
Gold Gemini Nanorods, CTAB Free (Wavelength 750 nm)

MDL Number

MFCD00003436

FAQ

What regulatory guidelines apply to Gold (CAS: 7440-57-5)?

Gold (CAS: 7440-57-5) is used in various industries and thus requires adherence to multiple regulations. Under the Globally Harmonized System (GHS), it is classified as a metal. In Europe, it falls under REACH regulations requiring registration and reporting. In the United States, the FDA and EPA have specific guidelines regarding its use in consumer and industrial products, including environmental discharge limits and safety data sheets (SDS) requirements.

Are there alternatives to Gold (CAS: 7440-57-5) in synthesis?

Gold is a unique element with specific properties, but alternatives like palladium or silver can be used in certain synthesis processes. For example, palladium is often used as a catalyst in place of gold due to similar reactivity. Other substitutes include rhodium, platinum, and certain organic ligands, depending on the specific application and desired chemical outcome.

What is the market or research trend for Gold (CAS: 7440-57-5)?

Gold (CAS: 7440-57-5) continues to experience robust market demand, particularly in electronics and jewelry industries. Research trends are focusing on its use in nanotechnology and biomedicine. Market trends indicate a steady price, with fluctuations driven by geopolitical events and economic conditions. Emerging research is exploring gold's role in solar energy conversion and catalysis.

How should waste containing Gold (CAS: 7440-57-5) be handled?

Waste containing gold should be handled carefully to prevent environmental contamination. It is recommended to collect waste in appropriate containers and incinerate or use professional waste disposal services that comply with local regulations. Environmental protection measures include ensuring that no waste is discharged directly into water bodies. Safe handling practices and appropriate storage are crucial to prevent gold from leaching into the environment.