Copper(I) iodide

Description

Copper(I) iodide is identified by CAS 7681-65-4, molecular formula CuI and molecular weight 189.83 g/mol. UNII 7DE9CA6IL2; InChIKey LSXDOTMGLUJQCM-UHFFFAOYSA-M. Boiling Point: About 1290 °C; Melting Point: 606 °C; Solubility: 0.008 g/100 cc water @ 18 °C.

Identification

CAS Registry Number	7681-65-4
PubChem CID	6432705
Molecular formula	CuI
Molecular weight	189.83 g/mol
IUPAC name	copper(1+) iodide
InChIKey	LSXDOTMGLUJQCM-UHFFFAOYSA-M
UNII (FDA)	7DE9CA6IL2

Computed Descriptors

Molecular Weight	190.45
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	1
Rotatable Bond Count	0
Exact Mass	189.83407
Monoisotopic Mass	189.83407
Topological Polar Surface Area	0
Heavy Atom Count	2
Formal Charge	0
Complexity	0

Physical & Chemical Properties

Boiling Point	About 1290 °C
Melting Point	606 °C
Solubility	0.008 g/100 cc water @ 18 °C
Density	5.67
Vapor Pressure	10 MM HG @ 656 °C

Physical description & handling notes

• CBI; Large Crystals; Other Solid; Dry Powder
• White to brownish-yellow solid; [Hawley] Insoluble in water; [Ullmann] White to light brown powder chunks with a weak odor; [Alfa Aesar MSDS]
• DENSE POWDER OR CUBIC CRYSTALS (ZINC BLENDE STRUCTURE)
• White cubic crystals
• White to brownish yellow powder
• Insoluble in dilute acid solutions

Regulatory Status

Regulatory & Food Contact	FDA Substance added to food: Use unspecified FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS

Documented Uses

• Used in photography, light-sensitive papers, oil drilling (corrosion inhibitor), and to stabilize light and heat in polymers; Also used in cloud seeding and as a feed additive; Occurs in nature as marshite; [Ullmann] Used as a catalyst, ice-nucleating chemical, coating in cathode-ray tubes, temperature indicator (with mercuric iodide), nutritional supplement, bactericide, and oxidizing agent in lithium primary batteries; [HSDB]
• Petroleum Production and Refining [Category: Industry]
• Battery Manufacturing [Category: Industry]
• Pulp and Paper Processing [Category: Industry]
• Photographic Processing [Category: Other]
• Farming (Feed Additives) [Category: Industry]

Synonyms

Copper(1+) iodide; Hydro-Giene; Marshite; Copper monoiodide; Copper iodide (cui); DTXSID5041803; Natural marshite; 7DE9CA6IL2; DTXCID3021803; 231-674-6; Cuprum Iodatum; RefChem:58181; 7681-65-4; Copper (I) iodide; Copper(I) iodide; Cuprous iodide

Frequently Asked Questions

What are the CAS number and molecular formula of Copper(I) iodide?

CAS 7681-65-4; molecular formula CuI; molecular weight 189.83 g/mol.

What other names is Copper(I) iodide known by?

Copper(1+) iodide, Hydro-Giene, Marshite, Copper monoiodide, Copper iodide (cui), DTXSID5041803.

What is the regulatory status of Copper(I) iodide?

Documented regulatory listings: FDA Substance added to food: Use unspecified; FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS.

What are the key physical properties of Copper(I) iodide?

Boiling Point: About 1290 °C; Melting Point: 606 °C; Solubility: 0.008 g/100 cc water @ 18 °C; Density: 5.67.

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.