caustic soda to water ratio for soap making

Instead of quickly brushing off my niece with a ready recipe to copy, I had taken a few minutes (while shopping) to point her in the direction of some tools to put together her own recipes – complete with lye and superfat calculations. It was written down as 0.140, rather than 0.143 that is in the chart. In reality saponification values for oils vary depending on factors such as growing conditions, varietals, extraction method etc. Soap is made by saponifying oils with lye. Again, I recommend that you don’t try to make this recipe at home; it’s only formulated to illustrate lye calculation – not to make great soap. Auntie Clara, thank you for this very helpful post. Feed a man a fish and he eats for a day. Caustic soda or lye is commonly referred to as sodium hydroxide at the store. of olive oil and your desired fragrance oils. Because if they knew how to do this as well as understanding what each oil brings they would be way ahead of the game and wouldn’t want to post asking other soapers for recipes! Yet, the differences confirm the value of a slight superfat as a safety margin in soapmaking. This is a confusing part for me, so if you can help that would be appreciated. I have happily used soapcalc.net, for ease of use, however, I see now that they are using a very high percentage of water to lye. Required fields are marked *. I look forward to experimenting on varying water ratios. Thank you again! You can purchase these inexpensively at craft supply stores. It took her all of 7 minutes to message me back with the correct number for olive oil. Your email address will not be published. I absolutely loved it and learned so much. Fantastic tutorial! However, unfortunately, the makers of Red Devil have discontinued making it. What a wonderful Aunt you are! Join in and write your own page! How? Pour 32 oz. Different oils and combinations of oils will affect how much water and lye is required to make soap. But if we’re making skincare soap we should make sure to have a little bit of superfat too. Add 25 oz. You have done well explaining this and how to do soap making. Making your own soap allows you to add your preferred ingredients such as different fragrance oils and herbs for a one-of-a-kind concoction. handmade soap image by Alison Bowden from, Copyright 2020 Leaf Group Ltd. All Rights Reserved. A couple of days later she made her first soap from a recipe she had formulated herself (I checked that the formulation and the calculations were sound and correct) and by all accounts the soap turned out beautiful and is now curing nicely. Thank you so much for this explanation. Warmest regards, Theresa. Allow the lye to cool to a temperature of 95 degrees Fahrenheit. Any water amount in excess of a 1:1 water:lye ratio is in fact a surplus. Choose different oils, add your favorite scents, and try new techniques. Excellent post. In soapmaking we always go by weight, never by volume. ‘Water discount’ is a misnomer since we can’t reduce water from the necessary 1:1 water:lye ratio. Before you judge do read on because the story continues. The same with cooking and baking. These values are often given as a range of numbers, typically somewhere between 100 and 300. Instead, they were chosen to illustrate how lye calculations and lye discount calculations work. Making your own soap allows you to add your preferred ingredients such as different fragrance oils and herbs for a one-of-a-kind concoction. FERMENTATION OF CAUSTIC SODA. The lye calculation is for fatty acids. That’s the whole calculation and that’s how simple it is. On saponification charts for soapmaking the values are given as coefficients (numbers) that can be used with any weight unit you choose. Here I get a number with fractions of a gram, but since my scale will not weigh units smaller than one gram I will simply round down that number: To make this recipe with a 5% superfat I need 89 grams of sodium hydroxide. This leaves us with a 0% superfat. Enter your email address to subscribe to this blog and receive notifications of new posts by email. Simply click here to return to. A good reminder how important it is to always check and double check recipes and calculations. Combine the lye with the oil mixture slowly once they both cooled off. Excellent and very clear explications, so easy to follow. Once you learn the basics of making cold process soap, you can start customizing your recipes. Unsaponified oil in soap helps condition skin by adding oils instead of the natural skin oils that get washed off by the soap. I’m doing it on the calculator on my phone: 30% = 30/100 = 0.3 so if you don’t have a handy %-button on your calculator you can do it like this and it will give you the same answer: There we go. Hi clara. © 2020 Auntie Clara's Handcrafted Cosmetics.

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