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+ Inorganic chemistry
+ Salt
+ Sodium
+ Chemistry
+ Sodium chloride
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Nathan Coleman

How do I determine the percentage of sodium chloride in a table salt sample?

Allison Kosters  Follow

Table salt, with the exception of iodized salt, is pure sodium chloride, so the percentage is 100%. Iodized salt contains a trace of iodine (in the form of sodium iodide), but it is less than 0.1%.

Sea salt, or Himalayan salt (the pink stuff) contains other minerals so they are not 100% NaCl.

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Donald Propp  Follow

If you mix small amount of salt with water, you get a solution and there will be no residual thing left (if the salt is pure). So, what do you want to decant from, if no residue remains?

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Anil Mukhiya  Follow

Table salt is a refined salt containing about 97 to 99 percent sodium chloride. Pure Salt (Sodium Chloride NaCl) is approximately 39.3% sodium by mass. Usually, anti caking agents such as sodium aluminosilicate or magnesium carbonate are added to make it free-flowing. Iodized salt, containing potassium iodide, is widely available. No fillers are used.

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Deuter Hew  Follow

3.9% (m/v) solution of NaCl = 3.9 g NaCl dissolved in 100 mL solution

You want to produce 0.650 L solution = 650 mL solution

Mass NaCl required = 3.9 g * 650 mL / 100 mL = 25.35 g NaCl required.

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