What are the common uses for lye?
Lye is a chemical used for making soap, performing chemistry demonstrations, making biodiesel, curing food, unclogging drains, disinfecting floors and toilets, and synthesizing drugs. Because it can be used to make illegal drugs, lye may be hard to find in a store.
What is the purpose of using lye in soap making?
If the soap is made properly, the lye is used up in the saponification process to turn oil into soap. There is no lye present in the finished bars of soap or shampoo. While all real soap must be made with lye, no lye remains in our finished product after saponification (described below).
What is lye used for cooking?
Lye water is an ingredient used in Asian and African cooking for cooking meat, rice or noodles and vegetables like corn, beans, maize or okra to soften or add flavour or keep vegetables colour.
Is lye harmful to humans?
Lye is a caustic substance that can certainly damage your skin if you’re exposed to it. It can cause a number of problems, such as burns, blindness, and even death when consumed.
Is lye an acid or base?
Now let’s look at lye, a strong base with the chemical formula NaOH (sodium hydroxide). If we add NaOH to water, it dissociates into Na+ and OH-. The sodiums don’t do anything important, but the hydroxyls make the solution more basic.
What did people use to make lye for?
Before you could buy lye in a bottle, people used to make it from raw materials. They used it for tanning hides and making soap. To make lye, they would burn hardwoods at high temperatures to make white ashes.
How is Lye used to make soap bars?
Lye is added to water, cooled down for a few minutes, and then added to oil and butter. This is then cooked for 1-2 hours and then placed into a mold to make soap bars of various shapes. A soap without lye is technically not a soap.
How do you get Lye out of wood?
To make lye, they would burn hardwoods at high temperatures to make white ashes. Then, they used a mixture of water and baking soda to penetrate the ashes and help remove the lye from them. Next, they filtered out the ashes. That left them with water that held enough lye to make soap and dissolve the fat from the animal hides.
What kind of wood can you use to make lye?
Softwoods, such as pine or fir, are better if you want to use the lye to make a liquid or soft soap. To prepare the ash, simply burn wood completely and collect the remains. You may also collect ash from other sources, such as paper, but expect chemical contaminants that may be undesirable if the lye is to be used for soap. Safety Information
Why is Lye used in homemade soap?
The lye is what helps in making the soap, firm and hard. However, lye is an alkali which is formed from the chemical reaction between calcium hydroxide, sodium carbonate and lime, and it is important to take extra care while making soap with lye.
What are some uses for lye?
Lye is a chemical used for a variety of purposes, including making soap, performing chemistry demonstrations, making biodiesel, curing food, unclogging drains, disinfecting floors and toilets, and synthesizing drugs. Because it can be used to make illegal drugs, lye may be hard to find in a store.
What is lye in soap and is it safe?
When made properly and aged for an appropriate period of time, soaps made of lye are completely safe, and are used to effectively clean dirt and grime, and have even been used to repel insects. In fact, good lye soaps are commonly used for purposes of personal hygiene, and in cleaning household items like clothes.
Is Lye a strong acid?
Lye is just the common word for NaOH, sodium hydroxide, the strongest base. This is the opposite chemical of HCl , hydrochloric acid, the strongest mineral acid. When mixed together they make simple salt water, but when concentrated as either acid or base, they are very dangerous to health.
