I've read warnings on this list about Tellurium Copper.
Yet when I do the MSDS research:
The actual MSDS ammounts are for tellurium are 0.1mg/m^3 or 0.01mg/m^3
But the telerium copper has 0.05% Tellurim maximum. Assuming that the Tellurium stays alloyed with the copper we get:
200 mg/m^3 or 20mg/m^3
Yet the copper limit is 1mg^m^3 so if you are safe working with straight copper the Tellurim should not be an issue.
The MSDS limit for aluminum dust is 15 mg/m^3
So by specification we are safer than Aluminum. Thats why the whole MSDS thing is out of hand, it provides ass covering material, but no real useful information.
I know of no machine shop that takes special precautions with certified resperators when machining aluminum.
Anyone with real experience, am I just being parinoid about the Tellurium?
(This is a hobby project not a production environment.)
Paul (Same as the origional poster froma differnt account)