Not sure about your main question but i would stay well clear of that stuff. We had it where i used to work and experts were called in to remove it.
The building was evacuated and a work carried out and extensive clean up operation afterwards.
Then air tests are done to detect if any remains.
Got the all clear so moved everyone back in.
Another air test done not long after, failed.
Evacuated again.
This went on several times and for several weeks and apparently everyone had been contaminated by it.