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Old 06-06-2018, 10:47 AM
Dan Vanantwerp Dan Vanantwerp is offline
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Location: Bozeman, MT
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I've been a little concerned about the 20 mule borax but really hesitate to change. I checked the MSDS on the stuff and found this a little uncomfortable:

SECTION 3: COMPOSITION / INFORMATION ON INGREDIENTS

INGREDIENT CAS NUMBER PERCENT (w/w)
Sodium Tetraborate Decahydrate 1303-96-4 60 100 %

Now, the 40% difference could just be variable water content in a more or less humid area, but they never go into it. I'm adding about 300g into 10 lbs so any contamination is not insignificant.

I'll get some 5M and give it a shot if this next round is a total head scratcher.
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