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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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