- How is sodium hydroxide prepared?
The synthesis starts from the electrolysis of ultra-pure Sodium Chloride (a highly purified table salt). Sodium and chlorine are separated immediately; while chlorine can be employed for several different reactions (mainly depending on market demands and prices), sodium reacts with water to form NaOHor Sodium Hydroxide, which comes out from the reactor in an aqueous solution of 50%. The solid form (pellets, prills, or flake) requires heat treatment to dry the solution.
The most extensive part of the production is the energy needed for the electrolysis. The means to separate chlorine and sodium used to be a mercurial cell reaction; nowadays, a particular membrane is used in modern reactors.
- How is NaOH prepared from NaCl?
The process is called the Castner- Kellner process, where we do the electrolysis of the brine solution (NaCl) to get our desired result of sodium hydroxide.
- Where is sodium hydroxide found?
You can buy sodium hydroxide from shops, including hardware shops or grocery markets. It is also called caustic soda in general terms.
- What is sodium hydroxide lye used for?
You can use it to strip paint, unclog drains, and make soap. Also, use it with hydrogen peroxide (30% hydrogen peroxide) to make homemade wood bleach. Another possible home use is the preparation of foods such as hominy, some pretzels, and cleaning.
- What are the sources of sodium hydroxide?
Sea Water (Brine) electrolysis, and you can also get it using advanced membrane technology. Or simply buy it from your nearby hardware shop.