| Identification | More | [Name]
Cadmium iodide | [CAS]
7790-80-9 | [Synonyms]
CADMIUM (II) IODIDE
CADMIUM IODIDE
Cadmium iodide (CdI2)
cadmiumdiiodide
cadmiumiodide(cdi2)
CdI2
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
Cadmiumiodide,99%
cadmium iodide, puratronic
cadmium iodide, ultra dry
CADMIUMIODIDE,CRYSTAL,REAGENT
Cadmiumjodid
Cadmium iodide, Puratronic(R), 99.999% (metals basis) | [EINECS(EC#)]
232-223-6 | [Molecular Formula]
CdI2 | [MDL Number]
MFCD00010920 | [Molecular Weight]
366.22 | [MOL File]
7790-80-9.mol |
| Chemical Properties | Back Directory | [Appearance]
Pearly white flakes or a crystalline powder | [Melting point ]
388 °C (lit.) | [Boiling point ]
787 °C (lit.) | [density ]
5.67 g/mL at 25 °C(lit.)
| [Fp ]
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 | [InChIKey]
OKIIEJOIXGHUKX-UHFFFAOYSA-L | [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. | [CAS DataBase Reference]
7790-80-9(CAS DataBase Reference) | [EPA Substance Registry System]
Cadmium iodide (7790-80-9) |
| Safety Data | Back Directory | [Hazard Codes ]
T,N | [Risk Statements ]
R23/25:Toxic by inhalation and if swallowed .
R33:Danger of cumulative effects.
R50/53:Very Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment .
R68/20/22:Harmful: possible risk of irreversible effects through inhalation and if swallowed .
R68:Possible risk of irreversible effects. | [Safety Statements ]
S22:Do not breathe dust .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S60:This material and/or its container must be disposed of as hazardous waste .
S61:Avoid release to the environment. Refer to special instructions safety data sheet . | [RIDADR ]
UN 2570 6.1/PG 3
| [WGK Germany ]
3
| [RTECS ]
EV1290000
| [TSCA ]
Yes | [HazardClass ]
6.1 | [PackingGroup ]
III | [HS Code ]
28276000 |
| Questions And Answer | Back Directory | [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
|
| Hazard Information | Back Directory | [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. | [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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