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This is a list of prices of chemical elements. Listed here are mainly average market prices for bulk trade of commodities. Data on elements' abundance in Earth's crust is added for comparison. As of 2020, the most expensive non-synthetic element by both mass and volume is rhodium.
Note: ρ is density, n is refractive index at 589 nm, [clarification needed] and η is viscosity, all at 20 °C; T eq is the equilibrium temperature between two phases: ice/liquid solution for T eq < 0–0.1 °C and NaCl/liquid solution for T eq above 0.1 °C.
The process has a high energy consumption, for example around 2,500 kWh (9,000 MJ) of electricity per tonne of sodium hydroxide produced. Because the process yields equivalent amounts of chlorine and sodium hydroxide (two moles of sodium hydroxide per mole of chlorine), it is necessary to find a use for these products in the same proportion.
The average price per unit can be driven upward by a rise in unit prices, or by an increase in the unit shares of higher-priced SKUs, or by a combination of the two. An 'average' price metric that is not sensitive to changes in SKU shares is the price per statistical unit. [1] Price per statistical unit
Sodium chloride / ˌ s oʊ d i ə m ˈ k l ɔːr aɪ d /, [8] commonly known as edible salt, is an ionic compound with the chemical formula NaCl, representing a 1:1 ratio of sodium and chlorine ions. It is transparent or translucent, brittle, hygroscopic , and occurs as the mineral halite .
Energy consumption per unit weight of product is not far below that for iron and steel manufacture [13] and greater than for the production of glass [14] or cement. [ 15 ] Since electricity is an indispensable raw material for the production of chlorine, the energy consumption corresponding to the electrochemical reaction cannot be reduced.
Saline water (more commonly known as salt water) is water that contains a high concentration of dissolved salts (mainly sodium chloride).On the United States Geological Survey (USGS) salinity scale, saline water is saltier than brackish water, but less salty than brine.
Sodium hexafluorosilicate for instance may be produced by treating sodium chloride (NaCl) by hexafluorosilicic acid: [6]: 3 [10]: 7 2NaCl + H 2 SiF 6 Na 2 SiF 6 ↓ + 2 HCl BaCl 2 + H 2 SiF 6 BaSiF 6 ↓ + 2 HCl. Heating sodium hexafluorosilicate gives silicon tetrafluoride: [10]: 8 Na 2 SiF 6 SiF 4 + 2 NaF