Organic-acid salt removes unwanted calcium without weakening asbestos. Asbestos mixed with disodium ethylene diamine tetraacetic acid (disodium EDTA) in water and agitated for 2 hours. After disodium EDTA solution is drained away, asbestos contains only 0.02 to 0.1 percent calcium. Fiber structure of asbestos unaffected.
Calcium Free Asbestos for Fuel Cells
NASA Tech Briefs ; 7 , 4
1983-10-01
Miscellaneous
No indication
English
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