CAS 7783-96-2 Silver iodide - Materials / Alfa Chemistry

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Silver iodide

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Catalog Number

ACM7783962

CAS Number

7783-96-2

Product Name

Silver iodide

Structure

Category

Electrolytes

Synonyms

Silvermonoiodide

IUPAC Name

Iodosilver

Molecular Weight

234.77

Molecular Formula

AgI;AgI

Canonical SMILES

[Ag]I

InChI

InChI=1S/Ag.HI/h;1H/q+1;/p-1

InChI Key

MSFPLIAKTHOCQP-UHFFFAOYSA-M

Boiling Point

1506 °C

Melting Point

557 °C

Purity

99%+

Density

5.68 g/mL at 25 °C (lit.)

Solubility

Insoluble in water

Appearance

Light yellow solid

Application

Silver iodide, a yellow crystalline powder, serves multiple purposes due to its unique properties. In medicine, it is valued for its caustic, astringent, and antiseptic effects, offering therapeutic benefits. Its photosensitivity makes it a vital component in photography, while in meteorology, its structural similarity to ice allows it to facilitate cloud seeding through heterogeneous nucleation, promoting precipitation. Silver iodide's utility extends to the estimation of silver content and serves as a solid lubricant for power contacts, showcasing its versatility across various fields.

Color/Form

Light yellow, powder; crystals are hexagonal or cubic

Complexity

Covalently-Bonded Unit Count

EC Number

232-038-0

Exact Mass

233.80956

Formal Charge

Heavy Atom Count

MeSH Entry Terms

silver iodide;silver iodide, 131I-labeled

Monoisotopic Mass

233.80956

Odor

Odorless

Other Experimental

Slowly attacked by boiling concn acids, not affected by hot soln of alkali hydroxides; slowly darkened by light.;It dissolves in the presence of excess iodide ion forming an AgI-2 complex; silver iodide exists in one of three crystal structures depending on the temp, a phenomenon frequently referred to as trimorphism. Below 137 °C, silver iodide is in the cold cubic, or gamma form; at 137-145.8 °C, it exists in the green-yellow colored hexagonal, or beta form; above 145.8 °C, the yellow cubic or alpha form of silver iodide is the stable crystal structure.;Silver iodide has the broadest wavelength sensitivity in the visible spectrum.

Rotatable Bond Count

Stability

LIGHT SENSITIVE;... SLOWLY DARKENED BY LIGHT.;Protect from light. Soln should be freshly prepared. /Colloidal silver iodide/;Protect from light. Soln should be freshly prepared. /Colloidal silver iodide/

Topological Polar Surface Area

0 Å²

Vapor Pressure

1 MM HG @ 820 °C

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