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Gold · CAS 7440-57-5 · Au. UNII 79Y1949PYO. Boiling Point: 2700 deg C; Boiling Point: 2856 °C @760 [mm Hg]; Melting Point: 1064.76 deg C.
| CAS Registry Number | 7440-57-5 |
|---|---|
| PubChem CID | 23985 |
| Molecular formula | Au |
| IUPAC name | gold |
| UNII (FDA) | 79Y1949PYO |
| Molecular Weight | 196.96657 |
|---|---|
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 0 |
| Rotatable Bond Count | 0 |
| Exact Mass | 196.966570 |
| Monoisotopic Mass | 196.966570 |
| Topological Polar Surface Area | 0 |
| Heavy Atom Count | 1 |
| Formal Charge | 0 |
| Complexity | 0 |
| Boiling Point | 2700 deg C |
|---|---|
| Boiling Point | 2856 °C @760 [mm Hg] |
| Melting Point | 1064.76 deg C |
| Melting Point | 1064.76 °C |
| Density | 19.3 |
| Density | 19.3 @25 °C |
| Vapor Pressure | 1 [mm Hg] @1869 °C |
| Heat of Vaporization | 324 kJ/mol |
| Regulatory & Food Contact | COLOUR: Food Additives GOLD (metallic) NO ADI ALLOCATED Not re-evaluated by JECFA, but the provisions for gold was withdrawn at CCFA50 TRS 617-JECFA 21/19 CIR / INCI: Cosmetic colorant |
|---|---|
| GHS notification summary | 99.2% (502 / 506) |
| GHS notification summary | 99.2% (502 / 506) |
|---|
This chemical does not meet GHS hazard criteria for 99.2% (502 of 506) of all reports.
Reported as not meeting GHS hazard criteria by 502 of 506 companies (only 0.8% companies provided GHS information). For more detailed information, please visit ECHA C&L website.
GOLD; 7440-57-5; Gold powder; Colloidal gold; Gold flake; Gold leaf; Gold, colloidal; Gold, elemental; Shell Gold; Burnish gold; Magnesium gold purple; Aurum Metallicum; CI 77480; 79Y1949PYO; C.I. 77480; Gold (e 175)
CAS 7440-57-5; molecular formula Au; molecular weight — g/mol.
GOLD, 7440-57-5, Gold powder, Colloidal gold, Gold flake, Gold leaf.
Documented regulatory listings: COLOUR: Food Additives; GOLD (metallic); NO ADI ALLOCATED.
99.2% of GHS notifications report no hazard classification (502 of 506).
Boiling Point: 2700 deg C; Boiling Point: 2856 °C @760 [mm Hg]; Melting Point: 1064.76 deg C; Melting Point: 1064.76 °C.
Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.