<P> Saline water ( more commonly known as salt water ) is water that contains a significant concentration of dissolved salts ( mainly NaCl ) . The salt concentration is usually expressed in parts per thousand ( permille , ‰ ) or parts per million ( ppm ) . The United States Geological Survey classifies saline water in three salinity categories . Salt concentration in slightly saline water is around 1,000 to 3,000 ppm ( 0.1 -- 0.3 % ) , in moderately saline water 3,000 to 10,000 ppm ( 0.3 -- 1 % ) and in highly saline water 10,000 to 35,000 ppm ( 1 -- 3.5 % ) . Seawater has a salinity of roughly 35,000 ppm , equivalent to 35 grams of salt per one liter ( or kilogram ) of water . The saturation level is dependent on the temperature of the water . At 20 ° C one milliliter of water can dissolve about 0.357 grams of salt ; a concentration of 26.3 % . At boiling ( 100 ° C ) the amount that can be dissolved in one milliliter of water increases to about 0.391 grams or 28.1 % saline solution . </P>
<P> Saline water ( more commonly known as salt water ) is water that contains a significant concentration of dissolved salts ( mainly NaCl ) . The salt concentration is usually expressed in parts per thousand ( permille , ‰ ) or parts per million ( ppm ) . The United States Geological Survey classifies saline water in three salinity categories . Salt concentration in slightly saline water is around 1,000 to 3,000 ppm ( 0.1 -- 0.3 % ) , in moderately saline water 3,000 to 10,000 ppm ( 0.3 -- 1 % ) and in highly saline water 10,000 to 35,000 ppm ( 1 -- 3.5 % ) . Seawater has a salinity of roughly 35,000 ppm , equivalent to 35 grams of salt per one liter ( or kilogram ) of water . The saturation level is dependent on the temperature of the water . At 20 ° C one milliliter of water can dissolve about 0.357 grams of salt ; a concentration of 26.3 % . At boiling ( 100 ° C ) the amount that can be dissolved in one milliliter of water increases to about 0.391 grams or 28.1 % saline solution . </P>
the amount of salt in water is called
the amount of salt in water is called
salinity
salinity