Gold single crystal, 10mm (0.39in) dia, 50mm (2.0in) long, (110) orientation, ±2°

• CAS: 7440-57-5
• Catalog Number: ACM7440575-21
• Category: Pure Element Single Crystals
• Molecular Weight: 196.96657g/mol
• Molecular Formula: Au;Au
• Description: Gold-coloured powder or tiny sheets;Soft yellow metal; gold-colored powder or tiny sheets.
• IUPAC Name: gold
• Canonical SMILES: [Au]
• InChI: InChI=1S/Au
• InChI Key: PCHJSUWPFVWCPO-UHFFFAOYSA-N
• Boiling Point: 2700 deg C;4892°F
• Melting Point: 1064.76 deg C;1948.57°F
• Density: 19.3
• Solubility: INSOL IN WATER, ACID; SOL IN POTASSIUM CYANIDE, HOT SULFURIC ACID;Soluble in aqua regia, insoluble in acids;Dissolves readily in 3:1 hydrochloric-nitric acid to form HAuCl4; dissolves in cyanide solutions in the presence of air or hydrogen peroxide to form Au(CN)2
• Color/Form: Soft, yellow metal;Cubic, yellow, ductile, metallic crystals; forms red, blue, or violet colloidal suspensions.;Yellow, ductile metal, relatively soft;Yellow, soft metal, face-centered cubic structure;Malleable, lustrous, yellow metal;When prepared by volatilization or precipitation methods, deep violet, purple, or ruby powder
• Complexity: 0
• Covalently-Bonded Unit Count: 1
• Diameter: 60 nm
• EC Number: 231-165-9;231-165-9
• Exact Mass: 196.96657g/mol
• Formal Charge: 0
• H-Bond Acceptor: 0
• H-Bond Donor: 0
• Heat of Vaporization: 324 kJ/mol
• Heavy Atom Count: 1
• Monoisotopic Mass: 196.96657g/mol
• Odor: No odor
• Other Experimental: /Gold/ reacts with aqua regia, with mixture containing chlorides, bromides, or iodides if they can generate nascent halogens, with many oxidizing mixture especially those containing halogens. Also with alkali cyanides, solution of thiocyanates and double cyanides.;VP: 1 Pa @ 1373 °C; 10 Pa @ 1541 °C; 100 Pa at 1748 °C; 1 kPa @ 2008 °C; 10 kPa @ 2347 °C; 100 kPa @ 2805 °C;Hardness (Mohs') 2.5-3.0; (Brinell's) 18.5; one natural isotope: 197; artificial isotopes (mass number): 177-179, 181, 183, 185-196, 198-203; Atomic number 79; Valences 1 and 3;Extremely inactive; not attacked by acids or oxygen; superficially attacked by aqueous halogens at room temperature; Reacts with aqua regia, with mixtures containing chlorides, bromides, and iodides, if they can generate nascent halogens, with many oxidizing mixtures, especially those containing halogens, also with alkali cyanides, solutions of thiocyanates and double cyanides.;Excellent reflector of infrared and heat; electrical resistivity: 2.06 microohm-cm @ 0 °C; extremely high light reflectivity;Standard enthalpy of formation: 366.1 kJ/mol (gas);Enthalpy of fusion: 12.55 kJ/mol;Does not corrode in air, but is tarnished by sulfur; chemically non-reactive; attacked by chlorine and cyanide solutions in the presence of oxygen.;GOOD CONDUCTOR OF HEAT AND ELECTRICITY;Very stable and nonreactive, does not burn or oxidize in air; reacts with various oxidizing agents at ambient temperatures provided a good ligand in present to lower the redox potential below that of water; not attacked by most acids under ordinary conditions; stable in basic media; reacts with halogens, particularly in the presence of moisture, and at low (<200 °C) temperatures.;IT FORMS ALLOYS WITH A NUMBER OF METALS INCLUDING SILVER, COPPER, PLATINUM, PALLADIUM, MANGANESE, ZINC & MAGNESIUM
• Rotatable Bond Count: 0
• Stability: Extremely inactive; not attacked by acids, air or oxygen. Superficially attacked by aq halogens at room temp.;Does not corrode in air, but is tarnished by sulfur;...Stable in basic media.
• UNII: 79Y1949PYO
• Vapor Density: 19.3