Restoration solution for removing coatings from carcinogenic fibers with an organic or inorganic contrast agent Visualization of the penetration of hydrochloric acid into carcinogenic fibers

摘要

A pH-stable dye which allows the penetration of hydrochloric acid into amorphically different carcinogenic fibers used for detection of sprayed asbestos or plastic mineral fibers for fireproofing components, is proposed. In the process, the continuous colored penetration of the fiber layers is achieved synchronously with the decomposition process of the hydrochloric acid. Thus, the progress of the penetration process can be estimated during the reconstruction work, and the task of removing the now spongy layers can be carried out with contrast agents of the following group consisting of organic and inorganic substances such as acridine orange, brilliant cresyl blue, bromophenol blue, eosin Y, erythrosine B, fluorescein, methyl blue, methyl orange, thymol blue resulting in the even penetration of carcinogenic fibers using hydrochloric acid.