Description References
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Silver iodide

Description References
Product Name
Silver iodide
CAS No.
7783-96-2
Chemical Name
Silver iodide
Synonyms
AgI;neosilvol;neosiluol;PREMION|R;Iodosilver;ver iodide;SILVER IODIDE;SILVER(I) IODIDE;silvermonoiodide;silver(1+)iodide
CBNumber
CB3854334
Molecular Formula
AgI
Formula Weight
234.77
MOL File
7783-96-2.mol
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Silver iodide Property

Melting point:
557°C
Boiling point:
1506°C
Density 
5.68 g/mL at 25 °C (lit.)
RTECS 
VW4450000
solubility 
insoluble in acid solutions
form 
Solid
Specific Gravity
6.01
color 
Yellow
Odor
odorless
Water Solubility 
0.03 mg/L
Sensitive 
Light Sensitive
Crystal Structure
Cubic, Sphalerite Structure - Space Group F(-4)3m
Merck 
14,8516
Solubility Product Constant (Ksp)
pKsp: 16.07
Exposure limits
ACGIH: TWA 0.01 ppm
Stability:
Stability Light-sensitive. Incompatible with strong oxidizing agents.
CAS DataBase Reference
7783-96-2(CAS DataBase Reference)
NIST Chemistry Reference
Silver iodide(7783-96-2)
EPA Substance Registry System
Silver iodide (AgI) (7783-96-2)
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Safety

Risk Statements 
36/37/38-53
Safety Statements 
22-24/25
RIDADR 
UN 3077 9 / PGIII
WGK Germany 
3
8
TSCA 
Yes
HazardClass 
9
HS Code 
28432900
Hazardous Substances Data
7783-96-2(Hazardous Substances Data)
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H400Very toxic to aquatic life

H410Very toxic to aquatic life with long lasting effects

Precautionary statements

P273Avoid release to the environment.

P501Dispose of contents/container to..…

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
226823
Product name
Silver iodide
Purity
99%
Packaging
25g
Price
$180
Updated
2024/03/01
Sigma-Aldrich
Product number
204404
Product name
Silver iodide
Purity
99.999% trace metals basis
Packaging
10g
Price
$152
Updated
2024/03/01
Alfa Aesar
Product number
011419
Product name
Silver iodide, 99.9% (metals basis)
Packaging
25g
Price
$162
Updated
2024/03/01
Alfa Aesar
Product number
011419
Product name
Silver iodide, 99.9% (metals basis)
Packaging
100g
Price
$458
Updated
2023/06/20
Strem Chemicals
Product number
93-4714
Product name
Silver iodide (99.9%-Ag)
Packaging
10g
Price
$64
Updated
2024/03/01
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Silver iodide Chemical Properties,Usage,Production

Description

Silver iodide (AgI) precipitates as a yellow, odor- and tasteless solid. Silver iodide acts as a very effective nucleus for the formation of ice crystals. Silver iodide has an important advantage over mercury as a subject for study of electrochemical properties of interfaces. It is also used as a solid lubricant for power contacts. It is also used as a local antiseptic.

References

[1] B. Vonnegut, The Nucleation of Ice Formation by Silver Iodide, Journal of Applied Physics, 1947, vol. 18, 593
[2] J. Lyklema and J. Th. G. Overbeek, Electrochemistry of silver iodide the capacity of the double layer at the silver iodide-water interface, Journal of Colloid Science, 1961, col. 16, 595-608
[3] Sylva Arnell and Gunnar Andersson, Silver Iodide as a Solid Lubricant for Power Contacts,  Proceedings of the Forty-Seventh IEEE Holm Conference on Electrical Contacts, 2001

Chemical Properties

Yellow Crystalline Powder

Physical properties

Light yellow hexagonal crystals or powder; darkens on exposure to light; density 5.68 g/cm3 ; melts at 558°C; vaporizes at 1,506°C; insoluble in water, most acids and ammonium carbonate solution; moderately soluble in concentrated solutions of alkali chloride, bromide, and thiosulfate; readily soluble in solutions of alkali cyanides, iodides and in hot concentrated hydriodic acid.

Uses

In cloud precipitation (rain-making).

Uses

Silver iodide is a yellow powder formed by the combination of a soluble iodide combined with silver nitrate. Silver iodide could also be formed by exposing metallic silver to the fumes of bromine as in the daguerreotype process. This was the primary halide used for all of the 19th century camera processes until the introduction of the silver bromide gelatin plate. With the exception of the daguerreotype, all silver iodide processes relied on physical development using a reducing agent such as gallic acid, pyrogallic acid, or ferrous sulfate, an acid restrainer, and excess silver.

Uses

Used in medicine for its caustic, astringent and antiseptic effects. Used in photography, and in the estimation of silver. Through heterogeneous nucleation, it is used in cloud seeding, relying on its beta-AgI crystal structure being similar to that of Ice.

Definition

T3DB: Silver iodide is an iodide of silver. It is a photosensitive solid used in photography, as an antiseptic in medicine, and in rainmaking. Silver is a metallic element with the chemical symbol Ag and atomic number 47. It occurs naturally in its pure, free form, as an alloy with gold and other metals, and in minerals such as argentite and chlorargyrite.

Preparation

Silver iodide is prepared by adding a solution of sodium or potassium iodide to a hot solution of silver nitrate: Ag+ (aq) + Iˉ (aq) → Ag I (s) The precipitate is washed with boiling water. The preparation is done in the dark under ruby red light.

Hazard

Silver iodide may cause irritation and psoriasis, and the main hazards encountered in the use and handling of silver iodide arise from its toxicological properties. It is toxic by a variety of routes (i.e. inhalation, ingestion and dermal contact) and exposures may include rashes, conjunctivitis, psoriasis (permanent greyish-grey discolouration of the skin, conjunctiva, and internal organs), headache, fever, hypersensitivity reactions, laryngitis and bronchitis.

Health effects

Silver itself is not toxic to humans, but most silver salts are. In large doses, silver and compounds containing it can be absorbed into the circulatory system and become deposited in various body tissues, leading to argyria, which results in a blue-grayish pigmentation of the skin, eyes, and mucous membranes. Argyria is rare, and although, so far as known, this condition does not otherwise harm a person's health, it is disfiguring and usually permanent. Mild forms of argyria are sometimes mistaken for cyanosis.

Flammability and Explosibility

Non flammable

Silver iodide Preparation Products And Raw materials

Raw materials

Preparation Products

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Silver iodide Suppliers

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View Lastest Price from Silver iodide manufacturers

HebeiShuoshengImportandExportco.,Ltd
Product
Silver iodide 7783-96-2
Price
US $6.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
2000KG/Month
Release date
2024-08-07
Hebei Zhuanglai Chemical Trading Co.,Ltd
Product
Silver Iodide 7783-96-2
Price
US $120.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
20ton
Release date
2024-06-04
Hebei Longbang Technology Co., Ltd
Product
Silver iodide 7783-96-2
Price
US $5.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
20TONS
Release date
2024-05-09

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