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General
  • Sodium bicarbonate or sodium hydrogen carbonate is the chemical compound with the formula NaHCO3.
  • Sodium bicarbonate is a white solid that is crystalline but often appears as a fine powder.
  • It has a slight alkaline taste resembling that of washing soda.
  • It is a component of the mineral natron and is found dissolved in many mineral springs.

Process

  • NaHCO3 is mainly prepared by the Solvay process, which is the reaction of calcium carbonate, sodium chloride, ammonia, and carbon dioxide in water.
  • NaHCO3 may be obtained by the reaction of carbon dioxide with an aqueous solution of sodium hydroxide.
  • The initial reaction produces sodium carbonateCO2 + 2NaOH ? Na2CO3 + H2O .

Technology

  • The evaluation addressed product quality, waste reduction/pollution prevention, and economics in replacing chemical solvent strippers with a bicarbonate of soda blasting technology for removal of paint from aircraft wheels.
  • Medical waste incinerator operation, it relies on a dry sorbent injection-based air pollution control technology using ARM & HAMMER Sorbent Grade Sodium Bicarbonate.

Application

  • Sodium bicarbonate can be substituted for baking powder provided sufficient acid reagent is also added to the recipe.
  • Many forms of baking powder contain sodium bicarbonate combined with one or more acidic phosphates or cream of tartar.
  • Sodium bicarbonate is used as an antacid to treat acid indigestion and heartburn.
  • A paste from baking soda can be very effective when used in cleaning and scrubbing.

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