What amount of sodium fluoride contains the recommended amount of fluoride?

what amount of sodium fluoride contains the recommended amount of fluoride?





The American Dental Association recommends that an adult female should consume 3.0mg of fluoride (F-) per day to prevent tooth decay.

What amount of sodium fluoride contains the recommended amount of fluoride?
NaF is 45% F by weight (19/42)


3.0 mg / 0.45 = 6.67 mg of NaF
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Reply:Formula of sodium fluoride is NaF and its molecular weight is 42 (23 for Na and 19 for F );


Now 19 gm of fluorine is available in 42 gm NaF;


then 3 mg fluoride will be available in = (42/19) * 3 ;


= 126/19 mg ;


= 6.63 mg of NaF;


So 6.63 mg of NaF contains 3 mg of fluoride .