Caustic soda is one of the most basic chemical materials with many applications in the production of paper, detergents, petrochemical products, etc. Using caustic soda will, therefore, lower water hardness to a level that is equal to twice the reduction in bicarbonates belonging to the alkaline-earths. At room temperature, it is a white, crystalline, odorless powder that absorbs moisture from the air. 1. can only be lowered to approximately 3 or 4°F if there is sufficient permanent hardness available to combine with the sodium carbonate formed. Caustic Soda will react with an acid solution. Anodising industries use a concentrated caustic soda solution to remove aluminum from extruder matrixes. Caustic soda can also be easily dissolved in water, which is one reason why many drain cleaning services use it as the first line of offence in the battle against blocked drains. Does caustic soda dissolve concrete? Commercial grade cleaners, however, have a higher concentration of caustic soda … In the second step of the DD process, further 48 to 50% NaOH was transferred from the FS to DS and overall 80 to 83% NaOH was removed from the FS. Introduction. When dissolved in water or neutralized with an acid, caustic soda releases a large amount of heat, enough to ignite combustible materials and the aqueous solution known as lye. caustic soda is fully soluble. The water’s M-alk. Caustic soda is alkaline and vinegar is acidic, so it makes sense at first glance to pour vinegar into the drain and let it react with the hardened material to produce a salt that is far less harmful and will dissolve in water. It is soluble in water and ethanol but insoluble in ether. This procedure produces very alkaline effluents containing high amounts of aluminum. In the second stage, the DS collected from diffusion cell was transferred to the ED cell as the FS for further treatment and recovery of caustic soda. Caustic soda is also called as sodium hydroxide.Which is a strong base. > The easiest way is to remove as much water as possible and poor a good > quantity of vegetable oil over it they will combine and make a very caustic > soap which will then be easy to dig out or wash out with water this took a day When caustic soda is mixed with water or an acid, there is a strong exothermic reaction where heat is released, which can be used as a source of energy to trigger other chemical processes. The corrosive and toxic properties of caustic soda disappear in these processes such as the case with soap above.