"Pyrophosphate" in canned tuna ?? - Mothering Forums

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Old 01-31-2008, 05:36 PM - Thread Starter
 
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So... I saw this on the label of the Costco brand of white chunk tuna. Anybody know what it is and what it is for ? (I'm guessing a preservative?) Most importantly, is it something we really should not be consuming ?? Thanks for any help !
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Old 02-01-2008, 07:00 AM
 
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http://en.wikipedia.org/wiki/Sodium_pyrophosphate

"Sodium pyrophosphate, also called tetrasodium pyrophosphate or tetrasodium phosphate, is a slightly toxic and mildly irritating colorless transparent crystalline chemical compound with the formula Na4P2O7 and CAS number 7722-88-5. It contains the pyrophosphate ion. Toxicity is approximately twice that of table salt when digested orally[1]."
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