Chemistry

Questions I missed: Solubility of our powdered ingredients

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In this post, Lalla writes: If the solubility is 0.5% at 25°C, does it mean if we dissolve a higher concentration at say 35°C the allantoin will crystallize as it cools down? If I try to dissolve MSM and allantoin and caffeine in water, will their respective solubility decrease because of the other ingredients? Solubility is generally...

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Chemistry Thursday: The atom! (updated)

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The periodic table. You see it everywhere, but what the heck does it all mean? Take a look at it for a moment. It’s arranged by atomic number, which is the number of protons in an atom’s nucleus. Let’s meet the atom! When we look at the periodic table of elements, we’re looking at the...

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Question: Do you want to know more basic chemistry?

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What do you think about having a post in which a basic concept in chemistry is explained every week? We could go over basic concepts in chemistry or I could answer questions or whatever you want. I’m thinking about things I’ve already covered like anionic, cationic, and non-ionic, solubility, miscibility, emulsification, and so on, but...

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Thickener: Behenyl alcohol

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I do love working with thickeners in my products! We know that cetyl alcohol can produce something slicker and silkier than stearic acid, and that cetearyl alcohol can offer those same qualities with a little more waxiness, so what does behenyl alcohol bring to the party? First, a review…. Cetyl alcohol is a fatty alcohol...

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Question: Evaporation!

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Tara made a great comment in response to yesterday’s question about why some of my lotion recipes are so thick – I used to agree that your recipes came out awfully thick, but then I learned to account for evaporated water. I now make sure my vessels that contain my ingredients for heating weigh the same before...

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