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Silver iodide

Silver iodide
Silver iodide
Names
IUPAC name
Silver(I) iodide
Other names
Argentous iodide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.029.125 Edit this at Wikidata
EC Number
  • 232-038-0
UNII
  • InChI=1S/Ag.HI/h;1H/q+1;/p-1 checkY
    Key: MSFPLIAKTHOCQP-UHFFFAOYSA-M checkY
  • InChI=1/Ag.HI/h;1H/q+1;/p-1
    Key: MSFPLIAKTHOCQP-REWHXWOFAV
  • [Ag]I
Properties
AgI
Molar mass 234.77 g/mol
Appearance yellow, crystalline solid
Odor odorless
Density 5.68 g/cm3, solid[1]
Melting point 558 °C (1,036 °F; 831 K)[1]
Boiling point 1,506 °C (2,743 °F; 1,779 K)[1]
0.03 mg/L (20 °C)[1]
8.52 × 10 −17[2]
−80.0·10−6 cm3/mol[3]
Structure[5]
Hexagonal, hP4
P63mc, No. 186
a = 0.4591 nm, c = 0.7508 nm
α = 90°, β = 90°, γ = 120°
2
4.55 D[4]
Thermochemistry[6]
56.8 J·mol−1·K−1
115.5 J·mol−1·K−1
−61.8 kJ·mol−1
−66.2 kJ·mol−1
Hazards
GHS labelling:[7]
GHS09: Environmental hazard
Warning
H410
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g. chloroformFlammability 0: Will not burn. E.g. waterInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
2
0
0
Flash point Non-flammable
Safety data sheet (SDS) Sigma-Aldrich
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
☒N verify (what is checkY☒N ?)

Silver iodide is an inorganic compound with the formula AgI. The compound is a bright yellow solid, but samples almost always contain impurities of metallic silver that give a grey colouration. The silver contamination arises because some samples of AgI can be highly photosensitive. This property is exploited in silver-based photography. Silver iodide is also used as an antiseptic and in cloud seeding.

  1. ^ a b c d Haynes, p. 4.84
  2. ^ Haynes, p. 5.178
  3. ^ Haynes, p. 4.130
  4. ^ Haynes, p. 9.65
  5. ^ Yoshiasa, A.; Koto, K.; Kanamaru, F.; Emura, S.; Horiuchi, H. (1987). "Anharmonic thermal vibrations in wurtzite-type AgI". Acta Crystallographica Section B: Structural Science. 43 (5): 434–440. Bibcode:1987AcCrB..43..434Y. doi:10.1107/S0108768187097532.
  6. ^ Haynes, p. 5.35
  7. ^ "C&L Inventory". echa.europa.eu. Retrieved 15 December 2021.

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