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| 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;Analytical Reagents for General Use;Metal and Ceramic Science;Puriss;Cadmium Salts;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 |  |
| | Cadmium iodide Chemical Properties |
| 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 | | 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) |
| | 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 | 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. | | Uses | Used in photography, analytical chemistry, manufacturing of phosphors, lubricants | | 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. | | 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.] |
| | Cadmium iodide Preparation Products And Raw materials |
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