13718-00-8 Usage
Description
Barium iodide is a chemical compound consisting of barium and iodine elements, with the chemical formula BaI2. It occurs in two forms: anhydrous and dihydrate, both of which are white solids. This salt is stable but sensitive to air, light, and moisture, and is incompatible with strong oxidizing agents. Barium iodide is characterized by its colorless crystalline structure, which decomposes and reddens upon exposure to air. It is soluble in water and slightly soluble in alcohol.
Uses
1. Used in Chemical Synthesis:
Barium iodide is used as a precursor for the preparation of other iodides in the chemical industry. Its ability to form various iodide compounds makes it a valuable starting material for the synthesis of different iodine-containing chemicals.
2. Used in Medical Imaging:
In the medical field, barium iodide is utilized as a contrast agent for X-ray imaging, particularly in procedures like a barium swallow or barium enema. Its high atomic number and opacity to X-rays make it an effective agent for visualizing the gastrointestinal tract.
3. Used in Analytical Chemistry:
Barium iodide is employed as a reagent in qualitative and quantitative analysis, particularly in the detection and determination of halide ions. Its ability to form a white precipitate with halides makes it a useful tool in analytical chemistry.
4. Used in Optoelectronics:
In the optoelectronics industry, barium iodide is used in the production of certain types of photoconductors and scintillators. Its high sensitivity to light and ability to conduct electricity make it a suitable material for these applications.
5. Used in Crystal Growth:
Barium iodide is utilized in the growth of single crystals for research purposes, particularly in the study of its optical, electrical, and structural properties. The high purity and controlled growth conditions of these crystals allow for a better understanding of the material's characteristics.
Preparation
Barium
iodide is made by the neutralization of barium
carbonate with HI in water:
BaCO3＋2HI (aq)→BaI2 (aq)
It is also made by the reaction of BaH2 with ammonium
iodide in pyridine:
BaH2＋2NH4I (aq)→BaI2 (aq)＋ 2NH3 (gas)＋H2 (gas)
The product crystallizes as the hydrate BaI2·2H2O. If
this heated, dehydration to anhydrous BaI2 occurs. The
dihydrate dehydrates at 539°C to form BaI2.
Check Digit Verification of cas no
The CAS Registry Mumber 13718-00-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,7,1 and 8 respectively; the second part has 2 digits, 0 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 13718-00:
(7*1)+(6*3)+(5*7)+(4*1)+(3*8)+(2*0)+(1*0)=88
88 % 10 = 8
So 13718-00-8 is a valid CAS Registry Number.
InChI:InChI=1/Ba.2HI/h;2*1H/q+2;;/p-2
