Chrysotile Asbestos Facts And Risks
Chrysotile Asbestos
Chrysotile asbestos, also known as white asbestos, is the most commonly used form of asbestos worldwide. accounting for approximately 90-95% of all asbestos ever used. This serpentine mineral has curly, flexible fibers that differ from the straight, needle-like fibers of amphibole asbestos types. Despite its widespread historical use, chrysotile is a known human carcinogen.
Properties and Historical Use
Chrysotile's physical properties made it valuable for numerous industrial applications. Its fibers are strong, heat-resistant, and can be woven into fabrics or mixed with other materials. Chrysotile was extensively used in asbestos-cement products, roofing materials, brake linings, gaskets, and insulation. The flexibility of chrysotile fibers made them particularly useful for textile applications.
Many countries continued using chrysotile after banning other asbestos forms, believing its curved fibers were less dangerous than straight amphibole fibers. However, extensive research has confirmed that chrysotile asbestos causes mesothelioma, lung cancer, and other asbestos-related diseases. The World Health Organization states that all forms of asbestos, including chrysotile, are carcinogenic to humans.
Current Status and Controversy
Despite being banned in over 60 countries, chrysotile asbestos is still mined and used in several nations. Proponents argue that controlled use of chrysotile in dense materials poses minimal risk, while health organizations maintain that no safe exposure level exists. The debate continues internationally regarding chrysotile's regulation and use.
Chrysotile-containing materials remain in many older buildings worldwide. When intact and undisturbed, these materials pose little risk. However, during renovation or deterioration, chrysotile fibers can become airborne and inhalable. Proper identification and management of chrysotile materials are essential for preventing exposure.
Understanding chrysotile's properties and risks helps inform proper handling procedures. Whether in existing structures or products, chrysotile asbestos requires the same safety precautions as other asbestos forms. Professional assessment and abatement are necessary when dealing with potential chrysotile-containing materials.