|IUPAC name||Sodium chloride|
|Molar mass||58.44 g mol−1|
|Density||2.165 g cm−3|
801 °C, 1074 K, 1474 °F
1413 °C, 1686 K, 2575 °F
|Solubility in water||359 g L−1|
|Solubility in ammonia||21.5 g L−1|
|Solubility in methanol||14.9 g L−1|
|Refractive index (nD)||1.5442 (at 589 nm)|
|Other anions||Sodium fluoride
|Other cations||Lithium chloride
|Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)|
It is a compound of two chemical elements, sodium (symbol: Na) and chlorine (Cl). This is why it has the chemical name "sodium chloride" (symbol: NaCl). NaCl is an ionic solid which accounts for its high melting point and conductivity in solution.
When salt ( sodium chloride) is mixed with water, the salt dissolves into the water creating the Saline Solution.
Health[change | change source]
- We need some salt to survive but too much salt is bad for our health. Salt raises blood pressure increasing the risk of heart disease and stroke. Adults should have at most 6 grammes of salt a day and children less.
Below is a table with the amounts of salt children should have daily at most.
- 1 to 3 years – 2g salt a day (0.8g sodium)
- 4 to 6 years – 3g salt a day (1.2g sodium)
- 7 to 10 years – 5g salt a day (2g sodium)
- 11 years and over – 6g salt a day (2.4g sodium) like adults
Most of the salt we eat is from food we buy rather than what we cook ourselves. To stay healthy we should check the salt content of food before we buy it and choose foods with less salt.
- Iodised salt can prevent goiter. A Goiter is a disease of the thyroid gland, which can happen in parts of the world where there is little iodine.