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Description

Silver · CAS 7440-22-4 · Ag. UNII 3M4G523W1G. Boiling Point: 4014 °F at 760 mmHg (NTP, 1992); Boiling Point: 2212; Boiling Point: Approx 2000 °C.

Identification

CAS Registry Number	7440-22-4
PubChem CID	23954
Molecular formula	Ag
IUPAC name	silver
UNII (FDA)	3M4G523W1G

Computed Descriptors

Molecular Weight	107.868
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	0
Rotatable Bond Count	0
Exact Mass	106.90509
Monoisotopic Mass	106.90509
Topological Polar Surface Area	0
Heavy Atom Count	1
Formal Charge	0
Complexity	0

Physical & Chemical Properties

Boiling Point	4014 °F at 760 mmHg (NTP, 1992)
Boiling Point	2212
Boiling Point	Approx 2000 °C
Boiling Point	2212 °C
Boiling Point	4014 °F
Boiling Point	2162 °C @760 [mm Hg]
Boiling Point	3632 °F
Melting Point	1763.5 °F (NTP, 1992)
Melting Point	961
Melting Point	960.5 °C

Physical description & handling notes

• Silvery metallic solid. (NTP, 1992)
• Dry Powder; Other Solid; Large Crystals; CBI; Large Crystals; Other Solid; Dry Powder; Large Crystals; Wet Solid; Dry Powder; Other Solid
• Silver-coloured powder or tiny sheets
• Metal: White, lustrous solid; [NIOSH]
• WHITE METAL.
• Silvery metallic solid.

Regulatory Status

Regulatory & Food Contact	FDA Regulatory Status of Color Additives: Cosmetics FDA Cumulative Estimated Daily Intake (CEDI): FCS COLOUR: Food Additives Colloidal Silver Products DECISION POSTPONED Not re-evaluated by JECFA, but the provisions for silver was withdrawn at CCFA50
GHS notification summary	28.9% (623 / 2154)

GHS Hazard Classification

GHS notification summary	28.9% (623 / 2154)
Reported hazard statements	H373, H400, H410, H360, H317, H320, H370, H372

Documented Uses

• Metal Preparation and Pouring [Category: Foundry]
• Brazing [Category: Heat or Machine]
• Electroplating [Category: Plate]
• Soldering [Category: Heat or Machine]
• Semiconductor Manufacturing [Category: Industry]
• Smelting Copper or Lead [Category: Industry]

Synonyms

SILVER; 7440-22-4; Argentum; Silver atom; Silver metal; Colloidal silver; Silver, colloidal; Algaedyn; Silber; Shell silver; Astroflake 5; Carey Lea silver; Argentum metallicum; Degussa 67; Degussa 80; Silpowder 130

Frequently Asked Questions

What are the CAS number and molecular formula of Silver?

CAS 7440-22-4; molecular formula Ag; molecular weight — g/mol.

What other names is Silver known by?

SILVER, 7440-22-4, Argentum, Silver atom, Silver metal, Colloidal silver.

What is the regulatory status of Silver?

Documented regulatory listings: FDA Regulatory Status of Color Additives: Cosmetics; FDA Cumulative Estimated Daily Intake (CEDI): FCS; COLOUR: Food Additives.

Is Silver classified as hazardous?

28.9% of GHS notifications report no hazard classification (623 of 2154).

What are the key physical properties of Silver?

Boiling Point: 4014 °F at 760 mmHg (NTP, 1992); Boiling Point: 2212; Boiling Point: Approx 2000 °C; Boiling Point: 2212 °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.