The US Department of Agriculture (USDA) classifies the amount of salt or sodium in canned tuna.
The molecular weight of sodium chloride is 58.44 grams. Sodium is 39% of salt.
(1) serving size in grams
(2) sodium chloride content
(3) sodium concentration in mg per serving
Sodium (in mg per serving)
<= 1.5% salt
no salt added
no sodium chloride added during processing
36 to 140 mg
very low sodium
<= 35 mg
The term for a product with > 1.5% salt is not specified. In the implementation this will be termed high salt.
Salt content is specified in 21 CFR 101.61.
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