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Chemical barrels

 
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Location: NW Iowa, USA
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I was not sure where to post this but I have a question about 55gal plastic drums.
I have been given a bunch of plastic barrels and was told they would have to be rinsed thoroughly (but of course).
these blue barrels had Linear Alkyl Benzene Sulphonic Acid in . Can these be used to store water in for a green house? I'm sure aquaponics is out.
 
pollinator
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Location: Kansas Zone 6a
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Here is the MSDS: http://www.arstanchem.in/images/msds-rept-labsa.pdf

It has the usual cautions for an acid--including taking care when rinsing out if any product still present.

As far as non-food-grade barrels, that appears to be about as safe as you can get. I would have no concerns about using them as water ballast in a greenhouse (paint them black to aid in heat retention).
 
pollinator
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Linear Alkyl Benzene Sulphonic Acid = detergent. As long as the water in the barrel doesn't get sudsy, you can infer that they have been rinsed well enough.
 
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