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Ammonium lauryl sulfate vs stainless steel
I want to use ammonium laureth sulfate and ammonium lauryl sulfate instead of SLES in our Shampoo. I have seen some posts here people saying that ALES reacts with stainless steel. As our mixer is stainless steel i want to know what reaction would happen and how does it effect the Shampoo or the stainless steel mixer?
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8 Replies
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I am very curious about that too, but would include other cosmetic ingredients or chemicals. I also use stainless steel vessels for making emulsions (so there is a lot of heating and lengthy mixing). I have been trying to find answers about possible reactions with stainless steel vessels when making emulsions. I wasn’t able to find any consistent, reliable information to address that question.
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Worked with ALS and ALES, never encountered this problem. Here is the Stainless steel compatibility chart https://rexel-cdn.com/Products/70D217C4-A2DA-4789-8D40-1BF37DC74F93/70D217C4-A2DA-4789-8D40-1BF37DC74F93.pdf
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Storage of water based product for long time in stainless steel will cause corrosion, I work with steel and aluminum aerosol cans
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@singhc10 thanks a lot
AppreciatedCan you tell me at what percentage maximum did you use these surfactants in stainless steel and how much contact time maximum?
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You need to look at the GRADES of SS used or research attentuation. With these measures, it is really a non-issue for the most part.
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ALS/ALES are harsher than SLS/SLES, we mainly use ALS/ALES in industrial products, while SLS/SLES in hair shampoo. For hair shampoo , try them between 5-7% (100%active). It will take time, for aerosol cans it takes about a month. For production tanks, maybe 3 months or never.
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@Microformulation thanks a lot
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@singhc10 that is interesting. I thought ALS/ALES would be milder than SLS/SLES.
Is ALS/ALES theoretically harsher than SLS/SLES or just in your experience?
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