Is Cesium Tungsten Bronze a Radioactive Substance?

Cesium tungsten bronze is widely used in near-infrared shielding materials due to its excellent absorption performance of infrared and ultraviolet rays, and is used as heat insulation additives for automotive glass, architectural glass, and agricultural greenhouse films.

However, whether cesium tungsten bronze is a radioactive material is a question of concern to many people.

Cesium, element symbol Cs, atomic number 55, located in the sixth period, IA group, its simple substance is a light golden yellow active metal, with a low melting point, it is easily oxidized in the air, and can react violently with water to generate hydrogen and explode. Cesium has no elemental form in nature, and is only rarely distributed in the land and ocean in the form of salt. Cesium is an important material for manufacturing vacuum parts, photoelectric tubes, etc.

Cesium metal is not radioactive. There are 37 isotopes of cesium have been found. The environmental radionuclide 137Cs of cesium emits gamma rays and is highly radioactive. Its half-life is as long as 30 years. If a person ingests or inhales 137Cs, the intake dose is less than 0.25Gy, which is still in the safe range. 137Cs over 6Gy can be fatal.

Therefore, cesium tungsten bronze is not a radioactive substance, and it is not harmful to the human body when used in glass, film, etc.

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