Salt equivalent

Salt equivalent is usually quoted on food nutrition information tables on food labels, and is a different way of defining sodium intake, noting that salt is chemically sodium chloride.

To convert from sodium to the approximate salt equivalent, multiply sodium content by 2.5:

$\backslash frac\{m\_\backslash mathrm\{NaCl\}\}\{m\_\backslash mathrm\{Na\}\}\; =\; \backslash frac\{m\_\backslash mathrm\{Na\}+m\_\backslash mathrm\{Cl\}\}\{m\_\backslash mathrm\{Na\}\}\; \backslash approx\; \backslash frac\{23\backslash mathrm\{u\}\; +\; 35.5\backslash mathrm\{u\}\}\{23\backslash mathrm\{u\}\}\; =\; \backslash frac\{58.5\}\{23\}\; \backslash approx\; 2.5$

(see: atomic mass and molecular mass).