This is the formula of Sodium bicarbonate and the digit shows the two molecules of Sodium bicarbonate. Sodium bicarbonate is also known as Sodium hydrogen carbonate. It is a white solid that is found in crystalline form and it is available as a white powder. Sodium bicarbonate is alkaline in nature and it shows the properties as shown by the washing soda or sodium carbonate. NaHCO3 is also produced artificially and it is used in a number of industries for making different chemicals and detergents.