The IARC has concluded that there is enough proof of carcinogenicity in humans and animals for crystalline silica to be classified as carcinogenic for humans since 1997 (group 1).
#Para que sirve el silicio professional#
Many studies on professional populations have shown a connection between inhaling crystalline silica and lung cancer. Once silicosis has been diagnosed, the disease continues to progress even if there is no additional exposure. Silicosis can be recognized as an occupational disease. Lung transplant is the only treatment currently available. Silicosis is specifically the result of inhaling silica in its crystalline form. These fine particles can then be easily inhaled, leading to certain diseases or disfunction of the body, the most serious being silicosis and lung cancer.Ĭhronic silicosis is a progressive fibrous lung disease that is potentially fatal and whose symptoms include respiratory insufficiency, shortness of breath, fatigue and chest pain. This is when fine particles of crystalline silica are formed. When used as an absorbent, granulates or filler in building materials, silica must first be ground or crushed. Where can crystalline silica be found?Įxposure route to crystalline silica is mainly through inhalation. 2ĭespite their attractive appearance and their natural origin, caution must be taken with diatomaceous earths as they can be a major source of crystalline silica. Consequently, calcinated diatomite can contain up to 70% crystalline silica. Under the effects of such heat, part of the amorphous silica can undergo a crystallographic transformation to form crystalline silica, mainly in the form of cristobalite. 1Ĭalcinated grade: Calcinated products are dried at higher temperatures, usually around 1000☌. These natural-quality products are mainly made up of amorphous silica, but they may contain up to 3% natural crystalline silica. Natural grade: Natural-quality products are dried at relatively low temperatures. There are different grades of diatomaceous earth that contain more or less crystalline silica, depending on the treatment applied:
Diatomaceous earth produced naturally is mainly made up of amorphous silica, but can contain crystalline silica.
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