Basic information Description References Safety Supplier Related
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Cadmium iodide

Basic information Description References Safety Supplier Related

Cadmium iodide Basic information

Product Name:
Cadmium iodide
Synonyms:
  • CADMIUM IODIDE, 99.999%
  • CADMIUM IODIDE, ANHYDROUS, BEADS, -10 ME SH, 99.999%
  • CADMIUM IODIDE, EXTRA PURE
  • CADMIUM IODIDE, ULTRA DRY, 99.9985% (METALS BASIS)
  • CADMIUM IODIDE, PURATRONIC, 99.999% (METALS BASIS)
  • CADMIUM IODIDE GR
  • Cadmiumiodide,99.5%(metalsbasis)
  • CADMIUM IODIDE REAGENT
CAS:
7790-80-9
MF:
CdI2
MW:
366.22
EINECS:
232-223-6
Product Categories:
  • Inorganics
  • Cadmium SaltsAnalytical Reagents
  • Cadmium Salts
  • Analytical Reagents for General Use
  • Metal and Ceramic Science
  • Puriss
  • CadmiumMetal and Ceramic Science
  • Catalysis and Inorganic Chemistry
  • Chemical Synthesis
  • Crystal Grade Inorganics
  • Salts
  • metal halide
  • 48: Cd
  • Beaded Materials
  • Cadmium
  • Cadmium Salts
  • Catalysis and Inorganic Chemistry
  • Cd
  • Chemical Synthesis
  • Crystal Grade Inorganics
  • Materials Science
  • Metal and Ceramic Science
  • Ultra-High Purity Materials
Mol File:
7790-80-9.mol
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Cadmium iodide Chemical Properties

Melting point:
388 °C (lit.)
Boiling point:
787 °C (lit.)
Density 
5.67 g/mL at 25 °C (lit.)
Flash point:
787°C
solubility 
It is soluble in ethanol, acetone, ether and ammonia.
form 
beads
color 
White to yellow
Specific Gravity
5.67
Water Solubility 
Very soluble in water, slightly soluble in acetone, ethanol and diethyl ether.
Sensitive 
Hygroscopic
Merck 
14,1621
Exposure limits
ACGIH: TWA 0.01 mg/m3; TWA 0.002 mg/m3; TWA 0.01 ppm
NIOSH: IDLH 9 mg/m3
InChIKey
OKIIEJOIXGHUKX-UHFFFAOYSA-L
CAS DataBase Reference
7790-80-9(CAS DataBase Reference)
EPA Substance Registry System
Cadmium iodide (7790-80-9)
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Safety Information

Hazard Codes 
T,N
Risk Statements 
23/25-33-50/53-68/20/22-68
Safety Statements 
22-45-60-61
RIDADR 
UN 2570 6.1/PG 3
WGK Germany 
3
RTECS 
EV1290000
TSCA 
Yes
HazardClass 
6.1
PackingGroup 
III
HS Code 
28276000

MSDS

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Cadmium iodide Usage And Synthesis

Description

Cadmium iodide (chemical formula: CdI2) is a chemical compound consisting of cadmium and iodine element. It appears as a green-yellow solid, being soluble in water, alcohol, ether, acetone, ammonia, and acid. It is a compound with the typical crystal structure of the form MX2, exhibiting strong polarization effects. It has many applications such as being used in lithography, photography, electroplating, process engraving, analytical chemistry, electrodeposition of cadium as well as the manufacturing of phosphor and lubricants. It is manufactured through the reaction between cadmium metal, or its oxide, hydroxide or carbonate and hydroiodic acid.

References

https://en.wikipedia.org/wiki/Cadmium_iodide https://us.vwr.com/store/product/7485761/cadmium-iodide-99-5-metals-basis

Chemical Properties

Pearly white flakes or a crystalline powder

Physical properties

White, hexagonal flakes or crystals; slowly turns yellow upon exposure to air or light; occurs in two allotropic forms, the alpha and beta forms; density 5.67 g/cm3; melts at 387°C (alpha form) and 404°C (beta form); vaporizes at 742°C; vapor pressures 1 and 5 torr at 416 and 481°C, respectively; soluble in water (86 g/100 mL at 25°C), ethanol, acetone, ether, and ammonia.

Uses

Cadmium iodide is used in lithography, photography, electroplating and the manufacturing of phosphors, in engraving process, and was used as an antiseptic and astringent.

Uses

Used in photography, analytical chemistry, manufacturing of phosphors, lubricants

Uses

Made by the action of hydriodic acid on cadmium oxide and crystallization. The colorless, flaky crystals are soluble in water, alcohol, and ether. This halide was a common iodizer for collodion formulas, particularly for negatives.

Uses

In electrodeposition of Cd; as nematocide; in manufacture of phosphors; as lubricant; in photoconductors; in photography, process engraving; lithography; in analytical chemistry.

Preparation

Cadmium iodide is prepared by the addition of cadmium metal, or its oxide, hydroxide, nitrate or carbonate to hydriodic acid:
CdO + 2HI → CdI2 + H2O
Also, the compound can be made by heating cadmium with iodine:
Cd +I2 → CdI2
A brownish crystalline β-form of the salt may be obtained by slow crystallization from solutions or fused salt mixtures.

Purification Methods

Crystallise it from ethanol (2mL/g) by partial evaporation. [Wagenknecht & Juza in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol II p 1096 1965.]

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