However, if liquid or gel soap is what you're after, then KOH-based glycerin is much easier to use. It has many industrial and niche applications, most of which exploit its caustic nature and its reactivity toward acids. 2. Now for the fatty acid profile and soap qualities for coconut oil. Allow 15 minutes for the mixture to simmer, or until the soap and water are completely mixed. 1 ounce lanolin. How many Liters does 3.2kg of KOH (Potassium Hydroxide) take up when mixed with oil and water to make liquid soap? Soaps from highly saturated, solid fats, such as tallow, lard, or shortening, are hard. The former produces solid bar soap. Dissolve lye in the water to make a lye solution before adding to the melted oils. Step 3: Cover the glass with double-thick plastic wrap or something similar to keep the scent contained, and set aside for 24 hours to allow all the bubbles to rise and disburse. PH was only 8! Triglycerides from oil or fat react with sodium hydroxide to form glycerol and sodium salts of fatty acids, which latter are the soaps. Modern soft soaps are made using vegetable oils and other polyunsaturated triglycerides. Effects On Methanol At Ambient Temperatures: Bronners soap, which is considered "pure" natural, uses lye. Add all of your chopped soap into the water. Synergetic ingredients: Works well with most ingredients. Combine the glycerin and distilled water in a deep stainless steel saucepan and bring to a boil. Microwave on high for about 2 minutes, stirring after 1 minute or until dissolved. Scrape the soap paste into the boiling glycerin/water mixture, stir a bit so the paste is covered by liquid as much as possible, then cover the pan and turn off the heat, leaving the pan on the still-hot burner. This is the chemical that induces saponification of the fats and oils to create liquid soap. KOH based glycerin CAN be made into soap bars and NaOH based glycerin CAN ALSO be made into liquid soap, but it does take more effort to get the desired result. Ingredients: * 47 oz organic olive oil (technically castile soap is only made from olive oil but, feel free to try something completely different) * 32.9 distilled water. Do not forget that you need more KOH than NaOH to saponify the same recipe, so use this formula: amount of KOH needed = 0.713 / amount of NaOH you substitute for (e.g. In a double boiler, melt together: 7.2 oz. So here is what we'll need to make our soap paste. Blend for about 5 minutes, then walk away. Taking it again down to the molecular level, picture a fat or oil molecule as a big capital "E." The vertical post is a glycerin molecule, and the three horizontal . Boil 2 cups (470 mL) of water for every bar of soap on the stove. The cheaper liquid soaps contain more water. Combine 14.11 oz. I left part of the soap unthickened to use in a foamer and the rest I added a very small amount of HEC to the soap, brought it to 170° and stick blended it. Triglycerides from oil or fat react with sodium hydroxide to form glycerol and sodium salts of fatty acids, which latter are the soaps. Simply so, how do you make liquid soap with caustic soda? Norman McFarling i've been buying Tide liquid laundry soap for years and been paying an arm and a leg! grapeseed oil. 9.5 ounces water. Step 2: Pour the liquid base into a clean glass or jug, and then stir in both the color and fragrance oil. Considerable care is taken to remove the excess sodium hydroxide because it is very caustic. While your oils are melting, mix 4.6 oz. In some cases it will take a long time. Always add your lye to your water, and never the other way around. 600 grams Olive Oil, 105 grams Coconut Oil, 45 grams Castor Oil. This recipe gives a richly emollient soap. This is called alkaline hydrolysis of esters. This is the only way I have been making Liquid soap since it makes it very easy and quick. Liquid soap gets milky and cloudy when the lye amount is incorrect. Keep distilled white vinegar on hand, this will neutralize chemical burn if lye contacts skin. As a natural detergent for dish washing - I . KOH is used for soap making, especially liquid soaps, as it needs lesser water to become liquid (the soap contains higher amount of cleaning agent than the soap made with other substances). they are pretty reasonable there. Start by shredding a bar of natural soap into a pan and adding 4 cups of water to create natural liquid soap. Dilute and scent the soap according to the guidelines in the full Liquid Soap Making Overview above. The flakes are easier to work with but are still caustic, so you must wear gloves and protective eyewear. . Soap weight is 33 ounces, plus 6.5 ounces superfats, 3 ounces essential oils, and 3.4 ounces panthenol and honeyquat, for a total of total will be 45.9 ounces. Saponification of an unsaturated oil, such as olive oil, gives a soft soap. Potassium Hydroxide. ($ 3.33 per 100 grams….so whatever that works out to for a pound- 450 grams) thats more than enough to make about 4 litres of the soap- which is cheap! Saponification is the process of lye water and oil mixing and producing soap. The word means any liquid alkali solution that can be used to make soap, so it can be used for any KOH or NaOH solution. As the superfat rises above about 3% in a liquid soap, the extra fat and fatty acids cannot remain mixed with the soap. What the. This causes the fatty acids not to saponify entirely. Even though making liquid soap is different than making bar soap, it's still vitally important that you use the correct amount of lye in your recipe. Potassium hydroxide is an inorganic compound with the formula K OH, and is commonly called caustic potash . In addition to being softer, this type of soap has a lower melting point. How Soap Is Made Soap is technically a salt product that is made by combining an alkali with fats or fatty acids. 3.6 oz. Press question mark to learn the rest of the keyboard shortcuts 1.2 oz. Re-melt the oils if needed and begin slowly whisking the soap water into the oils, taking care not to suds it up. Weigh out the water into a large, dishwasher safe jug. When it's liquid, continue to the next step but keep the heat on. Potassium hydroxide makes liquid soap, which is flowing, clear, or translucent. Potassium hydroxide flakes intrinsically contain water and other impurities, around 10 percent, which means the lye excess in clear liquid soap recipes is not as high as it initially appears. Heat coconut oil inside the cup. Soap pastes made with glycerin tend to be easier to dilute in water. The better solubility of the potassium salts contributes to this significantly. the good: Helps to stabilize the pH of the skincare products and is used in the saponification of oils to create soaps and detergents. It assumes that the reader has either taken our Cold Process 101 Soap Class or has prior experience making soap from scratch. Use like normal soap. As a basis for home-made detergent for laundry. The consequences of adding extra acid to liquid (KOH) soap are even more obvious and dramatic, because liquid soap cannot hide a high superfat like solid bar soap can. The initial water for the paste 2. coconut oil. lol KOH). If water is used for the lye liquid, the soap will have a 16% superfat. 3. Take coconut oil in a pot and slowly melt the oil. While you are melting your coconut oil, you can mix glycerine and water in a separate cup. This excess lye will be neutralized later. You'll have two phases of water for your liquid soap. Cover and keep on high for the first 30-60 minutes, then turn to low. It is easy to mistake the two. This is the chemical that induces saponification of the fats and oils to create liquid soap. Then, turn the stove on high to bring the water to a boil. Sodium hydroxide is used to makes bar soap. Firmly press the white, hose tip into the opening on the cap until it clicks into place. The oils in the slow cooker, the water in a heat-proof jug, and the lye (KOH) in another container. Having minimal Potassium Hydroxide dilution helps speed up saponification (less water to interfere with the oil/KOH love dance) so that you have paste sooner and can dilute sooner. Once the soap is dissolved, remove the pan from the heat and let cool. Potassium Hydroxide- $0.37 per oz (2 lb size) Distilled Water- $0.93 per lb (gallon size) Fragrance Oil- 1.57 per oz (1 lb size) Eight Ounce Bottles with Pump- $0.63 per bottle (50 bottle price break) Recipe Grand Total: $52.27 (that's just $1.24 per bottle of soap). NaOH vs. KOH Soap is made by a chemical process, called saponification, that converts oil and lye into soap and glycerin. Add the potassium hydroxide to the water (never the other way around! of KOH. 2 Plastic or rubber spatulas (I like to use one for my oils and one for my lye water) Thermometer. Why does Koh make liquid soap? 4 ounces olive oil. 100% coconut oil soap can be used. When triglycerides in fat/oil react with aqueous NaOH or KOH, they are converted into soap and glycerol. The mixture will be kind of chunky and want to separate, but don't worry. The primary difference between liquid soap and bar soaps is that potassium hydroxide (KOH) is used in place of sodium hydroxide (NaOH) for the lye solution. This book does a wonderful job of explaining why the chemical process for KOH soap making is different; she makes sure to emphasize that a 'neutral' or balanced soap is not pH neutral 7, but merely a completed chemical reaction with no leftover lye or excess fat. Then gently pull on the clear tubing to uncoil the clear tubing to be 3 feet long. It is also known as potash, lye or even KOH. • Students will record actions, calculations, and observations in a laboratory notebook. For this recipe using an 8% lye excess I usually meter around 9.5-9.7 PH. The alkali is the lye. Heat your soap back up. Allow 15 minutes for the mixture to cool before adding a few drops of your chosen essential oils. Adding more glycerin makes the process of liquid soap making easier and more fool-proof. Dissolve the lye crystals in water. I brought it to trace, then cooked and stirred for about an hour. Once you make the paste for liquid soap, you dilute the paste with water or another liquid. Glycerin is normally a by-product of the soap making process. KOH (potassium-based lye) is what is generally used for making liquid soap, and NaOH is what is generally used for making hard/bar-type soap. the not so good: Can be harsh in higher concentrations, causing irritation and sensitivity. Along with sodium hydroxide (NaOH), KOH is a prototypical strong base. Method 2Melting Castile Soap Bars into Liquid Download Article. KOH (Potassium Hydroxide-you can make it from clean ashes! 5% should be enough. 1. This works as good as Dawn ever has and has no toxic chemicals. Answer (1 of 3): It's not what is added to soaps to make them 'thicker' it's more that water is added to make them 'thinner'. Sometimes it will start and stop. Carefully pre-measure the ingredients. of very cold to slightly slushy goat milk with 2.6 oz. Myristic Acid (hardness, cleansing, bubbly lather) 15-25%. Potassium hydroxide is harder to find and comes in flakes, not beads. There are some other differences between the two processes, which I will cover further down. Lye/Water. Even though making liquid soap is different than making bar soap, it's still vitally important that you use the correct amount of lye in your recipe. Usually there's a slighly higher lye amount used in liquid soaps than bar soaps, in order to make sure that the fats are completely neutralized. Potassium Hydroxide is a type of lye specifically used to make liquid soap. Step 3: Cover the glass with double-thick plastic wrap or something similar to keep the scent contained, and set aside for 24 hours to allow all the bubbles to rise and disburse. 105 grams Coconut Oil, 645 grams Olive Oil. Another cause is the oil and water layers getting separated, which happens due to too much oil. I have wanted to make liquid soap for quite a while but was afraid of online . Easy Bubble Bath 24 Hrs. Open the flip cap on the bottle. (400 mL) of distilled water and 3.5 oz. This reaction may or may not instantly happen, and may cause you considerable stress getting it to happen. 4.8 ounces potassium hydroxide. The crude soap obtained from the saponification reaction contains sodium chloride, sodium hydroxide, and glycerol. Potassium hydroxide (KOH) - KOH is the caustic substance used to turn skin-loving oils and butters into soap. * 9.39 oz KOH (potassium hydroxide) (where we get ours) * (Later at dilution) 80 oz of distilled water. Both are considered lye, but the potassium hydroxide is not strong enough to make a solid soap. Simple right? Cook approximately 2 to 3 hours. (100g) of table salt in a microwaveable bowl or measuring cup. 1. Perfect consistency. This is an intermediate or advanced soap making topic. These values are based on the use of refined solid coconut oil (either 76 or 92 degrees): Lauric Acid (hardness, cleansing, bubbly lather) 44-52%. This is the chemical that induces saponification of the fats and oils to create liquid soap. In the hand crafted soaping world, these dual-lye recipes are often used for specialty soaps such as cream soap, shave soap, and liquid soap. Linoleic Acid (conditioning, moisturizing, lather silkiness) 1-3%. Soaps with less diluting water are thicker. Treatrment of a soap solution with dilute hydrochloric acid produces a mixture of fatty acids. Dual-lye recipes are much less common for bar soap, but they do exist. Olive Oil - 350 g Safflower Oil - 170 g In the case of bar soap, the lye used is sodium hydroxide (NaOH). The water layer is drawn off the top of the mixture and the glycerol is recovered using vacuum distillation . Make sure you are as accurate as possible. The lye used in liquid soaps doesn't make a hard bar of soap. It is present in various lotions, shampoos, hairsprays, manicure products, shaving creams, drain . I make a 33% solution of borax/water and add 3/4 oz per pound of paste to my diluted soap. Easy Bubble Bath 24 Hrs. The strong alkali is usually sodium hydroxide - aka lye, aka NaOH - or potassium hydroxide - aka KOH. Instead, it makes a pliable soap paste that is later diluted in water. SOAP. What You'll Need Equipment / Tools You will want to keep your PPE on while working directly with lye and raw soap batter. Who is it for? Why does Koh make liquid soap? Place 750g of Distilled water into a sturdy, plastic container. Some soap makers use two alkalis -- sodium hydroxide (NaOH) and potassium hydroxide (KOH) -- to make some types of soap. Step 2: Pour the liquid base into a clean glass or jug, and then stir in both the color and fragrance oil. The reason why potassium-based soaps are 'soft' or liquid is to do with the manufacturing process and the difficulty in separating them (R-COO-K) from the glycerin/glycerol after reaction with the soap lye (The alkaline salt solution used to make the soap e.g. Voila! Dedicate all soap-making tools to soap-making (and not cooking or eating). Stick Blender. It forms a solid, opaque bar soap. Sodium hydroxide is used to make hard bar soap while potassium hydroxide is used to make liquid soap. Wearing PPE, (gloves, goggles, and facemask) and working in a well-ventilated area, weigh the Potassium hydroxide. how to turn bar soap into liquid soap: Place the three cups of water into your sauce pan. Turn the slow cooker on to high heat and melt the coconut oil. Pouring lye into liquid prevents splashing. I see a few answers about using thickening agents to make soaps thicker. Adding water to lye can cause a volcano-like reaction. Mix it and repeat this process for couple of times. Let the soap completely dissolve (keep an eye on the pot so it doesn't overflow) Once all the soap is dissolved, remove the pot from the heat and . if you need 100g of NaOH for your recipe, you take out 5g . Melt the oils together in a large (non-aluminum) heavy bottomed pot over medium heat. Since this reaction leads to the formation of soap, it is called the Saponification process. Use latex or nitrile gloves when handling. I recently made a big batch using 90% Olive . I got some soap berries from the Bulk barn store- i'm in Canada. Answer (1 of 2): It's not used in soap, it's used to make soap. You can also try microwaving. It will bubble and steam—avoid inhaling the emissions. I label the handles with "Soap Only" with a sharpie. Combine by hand to blend the solutions, then start using the stick blender (immersion blender). And next time a customer asks if you make Liquid Soap, you can say YES I DO! Not only is it said to move the process along more quickly, making the process quicker and easier, it also has other advantages. Weigh out the KOH carefully into a small container and add it to the water, swirling it gently to dissolve the flakes. Keeping the heat on low, cover the slow cooker with its lid and check every 30 minutes, stirring with a heatproof spoon or spatula. It is also known as potash, lye or even KOH. It's not used in soap, it's used to make soap. Step 1: Weigh Your Ingredients. It is also known as potash, lye or even KOH. When you're ready, prepare the lye solution by weighing the water and potassium hydroxide into separate containers. KOH (Potassium Hydroxide) and NaOH (Sodium Hydroxide) are both commercially produced lyes: KOH is potassium-based lye and NaOH is sodium-based lye. Use 18.25 oz of water and 6.55 oz of NaOH (lye). Here's how -. Soaps are sodium or potassium salts of long chain fatty acids. Loyola University of Chicago: Biodiesel Labs 54 Liquid soap is usually formulated with extra lye to ensure that the oils are properly saponified, so make certain you don't skip a step in order to neutralize the excess lye. Disclaimer: Making Liquid Soap is more difficult / involved than making bar soap. • Students will make liquid soap from glycerin they made in a biodiesel reaction. These impurities are removed by boiling the crude soap curds in water and re-precipitating the soap with salt. Yes, it does. Melt the coconut oil along with the other oils in a large crock pot. The most expensive part of this recipe is the fragrance oil and the packaging. Finally, too much liquid within the formulation will also lead to a cloudy and milky consistency. When you make liquid soap you use a different type of Lye called Potassium Hydroxide (KOH). Pour lye into liquid, not liquid into lye when making a basic solution. The water needed for dilution (we'll discuss later) To find the water needed for the paste multiply the KOH amount by three. For that reason, clear liquid soap recipes are formulated with a lye excess. I make mine in a crock pot and once it is finished it is a hard paste that you then dilute with water to make a liquid. Even though I do a 8% lye excess instead of Failor's 10%, I follow Failor's recommendations for using borax. With liquid soaps, the chemical reaction takes place with potassium hydroxide, which is a specific type of lye for liquid soap. Soft Soap: Soft soap is made using potassium hydroxide (KOH) rather than sodium hydroxide. sustainable palm oil. As a basis for shampooing - mix with a 100% liquid soap of another oil and/or add essential oils of your choice (ylang ylang, romarin…) and/or dilute your soap paste in herbal infusion instead of distilled water. Most early soaps were made using potassium hydroxide obtained from wood ash and animal fats. When the KOH is dissolved into your milk, very slowly and carefully combine your oils and your milk. Using a measuring cup, add the appropriate amount of water for the number of soap bars you're melting into liquid. Agitation and warmth are key to making it start. 1. Set aside. Step 1: Materials Needed. biodiesel made with KOH, can be turned into a liquid soap with a multitude of uses from hand soap to glass cleaner. Some carrier oils do better in liquid soap and some are best if left out or used in smaller quantities. Once all the soap water is incorporated, decant into a soap pump bottle or just a normal bottle. KOH makes soaps that are readily soluble in water (that is why it is used for liquid soapmaking). There are two alkali's that can be used to make soap: sodium hydroxide (caustic soda) and potassium hydroxide. . Therefore, potassium soaps are used to make liquid soap and shaving cream. Stir to combine. This is the chemical that induces saponification of the fats and oils to create liquid soap. Always have proper ventilation to expell fumes. Equipment: Combining a potassium hydroxide solution with various carrier oils and cosmetic butters makes liquid soap. It is mainly used to produce soft and liquid soaps. Put the sauce pan on the stove over medium to high temperature. Make sure you are working in a well-ventilated area and wearing your protective clothing (apron, gloves, and glasses). Spatulas work great for getting all the batter out of your bowl. Press J to jump to the feed. All skin types except those that have an identified allergy to it. Just place a microwave safe cup into microwave. Why is sodium hydroxide used in soap? This is a keeper! So we'll end up with 543 g of water. It is only used for making liquid soaps. Considerable care is taken to remove the excess sodium hydroxide because it is very caustic. Remove the trigger sprayer from the holster by pushing it from its holding spot. While the soap is diluting make a 20% saline solution. Step 4 - Fragrance and Thicken the Soap. and you should be wearing goggles and gloves). ), coconut oil and the potato water! I then left it overnight to finish gelling and when tested was neutral-no zap. You certainly could add more water up front, but I am of little patience and I always wonder if I'm not just wasting water when I add it up front. Store the paste in covered jars. The latter produces liquid soap.