Gold (CAS 7440-57-5) — formula Au, molecular weight 196.96657; category dyes and pigments.
Gold (CAS 7440-57-5) is a chemical raw material in the dyes and pigments category. Its molecular formula Au comprises 1 Au atom. Its molecular weight is about 196.96657. Reported physicochemical data: melting point around 1064.76 deg C, boiling point around 2700 deg C. As a sourcing and distribution partner we help locate and compare this item across domestic and cross-border channels, arranging samples and batch orders with full COA and compliance files.
| CAS Number | 7440-57-5 |
|---|---|
| Molecular Formula | Au |
| Molecular Weight | 196.96657 |
| Melting Point | 1064.76 deg C |
| Boiling Point | 2700 deg C |
| Applications | photography and medicine--treatment of rheumatoid arthritis, alloyed or plated jewelry and dental crowns, also used to color glass, enamel, and porcelain and to guild or electroplate in art and electronics, [Kanerva |
| Category | Colorants|Food Additives |
Documented applications: photography and medicine--treatment of rheumatoid arthritis, alloyed or plated jewelry and dental crowns, also used to color glass, enamel, and porcelain and to guild or electroplate in art and electronics, [Kanerva.
Gold is a colorant or pigment compound with CAS registry number 7440-57-5 and molecular formula Au (molecular weight 196.96657), belonging to the dyes and pigments segment of chemical raw materials.
CAS number: 7440-57-5
Its molecular formula Au comprises 1 Au atom.
Also known as: Gold · 金子
Category: dyes and pigments / food additives
The CAS registry number of Gold is 7440-57-5.
Molecular formula Au, molecular weight 196.96657.
It is also registered under: Gold, 金子.
Recorded applications: photography and medicine--treatment of rheumatoid arthritis, alloyed or plated jewelry and dental crowns, also used to color glass, enamel, and porcelain and to guild or electroplate in art and electronics, [Kanerva.
Category: Colorants / Food Additives.
Packaging is agreed per order, from lab-scale packs to bulk, and confirmed with each order rather than fixed on the page. A Certificate of Analysis (COA) ships with every batch and MSDS is available; where the end use carries a regulatory limit (food contact, pharmaceutical or cosmetic), state the standard at enquiry and the grade is set against it.
Independent reference data for Gold (CAS 7440-57-5), compiled from public chemistry databases.
| 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 |
| 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 |
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)
| 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 · 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.
Source: PubChem / Wikidata; the batch COA governs where values differ.
Supplier: Jinan Shenghe Chemical Co., Ltd.
中文页面: 金子