Chemistry of inorganic compounds – Miscellaneous process
Patent
1989-06-15
1991-08-20
Straub, Gary P.
Chemistry of inorganic compounds
Miscellaneous process
423167, 423335, 423DIG20, 405129, B09B 100, G21F 900, C01F 500
Patent
active
050412779
ABSTRACT:
A method for rendering harmless chrysotile asbestos comprises wetting the asbestos fibers with an aqueous solution containing about 1 to 10% by weight of a weak organic acid, such as trifluoroacetic acid. The weak acid solution hydrolyzes the magnesium oxide units contained in the crystal structure of chyrsotile asbestos, thereby destroying this crystal structure and the fibrous nature of the asbestos. The method may be used on building materials already in place to remove the asbestos fibers contained therein.
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Austen Chase Industries, Inc.
Straub Gary P.
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