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March 2008

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Subject:
From:
Bev Christian <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Bev Christian <[log in to unmask]>
Date:
Tue, 11 Mar 2008 15:41:42 -0400
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Inge,
You are one of the good guys!

Your solution (pun intended) for the acetone was sane.  The materials was used (stripping paint outside?), was reasonable and saved a whole lot of expenses and paperwork.  You are to be congratulated, although I am sure some wheeny somewhere would object.

Now perhaps I will be a wheeny with regards to the IPA and the drain.  I won't do it.  A SEC tester holds quite a few 4 liter bottles of stuff.  And do you really want to pour any flammable down a sink?  And I was told that "dilution is not the solution" and although this can be taken to extremes it seems to me that for say 16 liters of material this applies.
Bev
RIM



-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Hfjord
Sent: Tuesday, March 11, 2008 3:29 PM
To: [log in to unmask]
Subject: [TN] SV: [TN] disposal of alcohol/DI water solution

As far as I know, clean alcohol is not classified a poison. If you pour some
gallons a year in the wast water, the alcohol will be mixed in proportions
1:trillions. Won't that be harmless? And DI is already water. I'm not
meaning to depreciate the laws, but sometimes I think we exaggerate things.
I had about half a litre of used acetone in a glass bottle in my lab. The
environmental inspection group made a raid one day and saw my bottle without
label. They ordered me to buy a special, explosion safe metal can, pour the
waste acetone in, and send the whole to an adress for destruction. If
not,they had the right to close my lab. I didn't argue with them, took the
bottle with the waste acetone to my home and found it useful for this and
that. Cheaper, faster, simpler. Am I a bad guy?


Inge

-----Ursprungligt meddelande-----
Från: TechNet [mailto:[log in to unmask]] För Bev Christian
Skickat: den 11 mars 2008 18:16
Till: [log in to unmask]
Ämne: Re: [TN] disposal of alcohol/DI water solution

Phil,
We bottle it in used IPA bottles (with new WHMIS labels - Canadian
federal protocol for chemicals) and then we have it removed by a bona
fide waste hauler.  Not sure what they do with this mixture, but for
just spent IPA/acetone/toluene (no water), it is burned for fuel.
Bev
RIM


-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Phil Nutting
Sent: Tuesday, March 11, 2008 1:13 PM
To: [log in to unmask]
Subject: [TN] disposal of alcohol/DI water solution

Hey Technetters,

It just occurred to me that in using the alcohol/DI water mix for
determining the cleanliness of a circuit board, somewhere along the line
this becomes a waste fluid and needs to be disposed.  What are your
disposal methods?  I'm sure the local waste water folks would look
poorly on alcohol being added to the waste stream... unless it was
Johnny Walker Black or Stoli in their pockets.

Phil Nutting

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