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Sodium bicarbonate also known as bicarbonate of soda is a chemical compound with the formula NaHCO3. It is a salt composed of sodium ions and bicarbonate ions. Sodium bicarbonate is a white solid that is crystalline but often appears as a fine powder.
Sodium bicarbonate is commonly used to neutralize unwanted acid solutions or acid spills in chemical laboratories.
Sodium bicarbonate is used in a process for removing paint and corrosion called soda blasting. As a blasting medium, sodium bicarbonate is used to remove surface contamination from softer and less resilient substrates such as Aluminium, copper or timber which could be damaged by silica sand abrasive media.
A paste made from baking soda with minimal cold water is used as a gentle scouring powder useful in removing surface rust, as the rust forms a water-soluble compound when in a concentrated alkaline solution. Sodium bicarbonate is commonly added to washing machines as a replacement for water softener and to remove odors from clothes. It is also almost as effective in removing heavy tea and coffee stains from cups when diluted with warm water. A 2% solution of sodium bicarbonate can wash out clothing contaminated with very dense toxic dust of depleted uranium.