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.
Parameters:
(1) serving size in grams
(2) sodium chloride content
(3) sodium concentration in mg per serving
Term
|
Sodium Chloride
|
Sodium (in mg per serving)
|
regular
|
<= 1.5% salt
|
NA
|
no salt added
|
no sodium chloride added during processing
|
NA
|
low sodium
|
NA
|
36 to 140 mg
|
very low sodium
|
NA
|
<= 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.