IUPAC Name: Gold 
Canonical SMILES: [Au]
InChI: InChI=1S/Au
InChIKey: PCHJSUWPFVWCPO-UHFFFAOYSA-N
Empirical Formula: Au
Molecular Weight: 196.9666
EINECS: 231-165-9
Product Categories: Inorganics; Gold Coated SubstratesMicro/Nanoelectronics; Gold Surfaces and Sources; Electronic MaterialsSubstrates and Electrode Materials; Materials Science; Micro/Nanoelectronics; Self Assembly&Contact Printing; Substrates; Gold; Metal and Ceramic Science; Metals; Electronic Materials; Gold Surfaces and SourcesMaterials Science; Electrode MaterialsMetal and Ceramic Science; Organic Electronics and Photonics; Substrates and Electrode Materials; GoldMaterials Science; AA Standard SolutionsSpectroscopy; AAS; Alphabetic; ChlorideAnalytical Standards; GSpectroscopy; Matrix Selection; Reference/Calibration Standards; Single Solution; Standard Solutions; Antibody Labeling; Gold Surfaces and SourcesAntibody Modification; GoldMicro/Nanoelectronics; Labeling with GoldMaterials Science; 79: Au; Nanomaterials; Nanoparticles: Metals and Metal AlloysNanomaterials; Nanopowders and Nanoparticle Dispersions; Buffers, Reagents,&Stains; Protein Stains Compatible with Western Blotting; Western Blotting 
Melting Point: 1063 °C(lit.)
Boiling Point: 2808 °C(lit.)
density: 19.3 g/mL at 25 °C(lit.)
Flash Point:  4 °C
storage temp.: 2-8 °C
solubility: H₂O: soluble
Stability: Stable. May react with halogens, strong oxidizing agents, ammonia, hydrogen peroxide. Reaction with ammonia or hydrogen peroxide may form explosive materials.
Classification Code of Gold (CAS NO.7440-57-5): Tumor data

Reported in EPA TSCA Inventory.

Hazard Codes: Xi,Xn,F
Risk Statements: 36/38-43-67-65-63-48/20-38-11-34-23 
R36/38:Irritating to eyes and skin. 
R43:May cause sensitization by skin contact. 
R67:Vapours may cause drowsiness and dizziness. 
R65:Harmful: may cause lung damage if swallowed. 
R63:Possible risk of harm to the unborn child. 
R48:Danger of serious damage to health by prolonged exposure. 
R20:Harmful by inhalation. 
R38:Irritating to skin. 
R11:Highly flammable. 
R34:Causes burns. 
R23 :Toxic by inhalation.
Safety Statements: 26-36/37/39-45-62-36/37 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection. 
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) 
S62:If swallowed, do not induce vomitting; seek medical advice immediately and show this container or label. 
S36/37:Wear suitable protective clothing and gloves.
RIDADR: UN 1789 8/PG 3
WGK Germany: 3
RTECS: MD5420000
HazardClass: 6.1
PackingGroup: II
Poison by intravenous route. Questionable carcinogen with experimental tumorigenic data by implantation. Can form explosive compounds with NH₃, NH₄OH + aqua regia, H₂O₂. Incompatible with mixtures containing chlorides, bromides, or iodides (if they can generate nascent halogens), some oxidizing materials (especially those containing halogens), alkali cyanides, thiocyanate solutions, and double cyanides.

  Gold (CAS NO.7440-57-5), its Synonyms are Gold powder ; Gold, elemental ; Pigment metal 3 ; Burnish gold ; C.I. 77480 ; C.I. Pigment Metal 3 ; CI 77480 ; CI Pigment metal 3 ; Colloidal gold ; Magnesium gold purple ; Shell Gold . It is yellow metal.