Saline water

Seawater has a salinity of roughly 35,000 ppm, equivalent to 35 grams of salt per one liter (or kilogram) of water.

[1] At 20 °C (68 °F) one liter of water can dissolve about 357 grams of salt, a concentration of 26.3 percent by weight (% w/w).

[3] At 20 °C one liter of water can dissolve about 357 grams of salt, a concentration of 26.3%.

[4] The thermal conductivity of seawater (3.5% dissolved salt by weight) is 0.6 W/mK at 25 °C (77 °F).

Density ρ of brine at various concentrations and temperatures from 200 to 575 °C (392 to 1,067 °F) can be approximated with a linear equation:[8]

where the values of an are: About four percent of hydrogen gas produced worldwide is created by electrolysis.