Thallium iodide is a chemical substance and thallium compound, which is white or yellow crystalline powder. It is slightly soluble in water and soluble in aqua regia and concentrated sulfuric acid, but not soluble in acid. It is highly toxic and with chemical stability. Thallium(I) Sulfate is the raw material.
Thallous iodide is a compound with unique optical and physical properties, making it invaluable in specialized lighting, optics, and radiation detection applications. Known for its high refractive index, transparency in the infrared spectrum, and ability to improve light emission, thallous iodide is often utilized in applications requiring high-efficiency illumination, precise optical components, and accurate radiation monitoring.
Thallium Iodide
| CAS No.:7790-30-9 | EINECS No.:232-199-7 | Molecular Formula:TlI | Molecular Weight:331.27 |
| Melting Point:440℃ | Boiling Point:824℃ | Density:7.1 | UN 1707 6.1/PG 2 |
| TlI | Cd | Zn | Cu | Pb | Fe | K |
| ≥99.9% | ≤0.0005% | ≤0.001% | ≤0.001% | ≤0.003% | ≤0.0005% | 10-20ppm |
Applications
The mixture of thallium(I) iodide and thallium bromide apply to transmission of infrared radiation. Thallous iodide applies to make medicine, do spectral regia and concentrated sulfuric acid, but not soluble in acid. It is highly toxic and with chemical stability.
One of the primary uses of thallous iodide is in metal halid lamps, where it acts as a performance-enhancing additive. When added to these lamps, TlI helps produce bright, efficient light with a unique color spectrum, making it ideal for commercial and industrial lighting, stage lighting, and even large sports venues. Thallium iodide improves the color rendering and overall efficiency of metal halide lamps, contributing to lighting solutions that are both energy-efficient and effective in delivering high-quality illumination.
In optics, thallous iodide’s transparency in the infrared range makes it a valuable material for infrared lenses, prisms, and other optical components used in IR spectroscopy and thermal imaging. Its high refractive index allows for precise light manipulation, which is essential in scientific instruments and imaging devices that operate in the infrared spectrum. These optical components are particularly valuable in fields such as environmental monitoring, medical diagnostics, and defense.
Thallous iodide is also used in radiation detection equipment, particularly in scintillation detectors. When combined with other materials, TlI helps enhance the detection of gamma radiation, making it useful in medical imaging, nuclear research, and environmental safety monitoring. Scintillation detectors utilizing the thallium compounds are valued for their sensitivity and ability to produce clear, reliable readings in radiation measurement.