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Salt variety for thickening a surfactant
Does it make a difference if one uses iodized salt versus non-iodized (kosher) salt when using that to thicken a surfactant? I do not have a shampoo problem now, I am just curious.
Thanks!
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7 Replies
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No difference
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What’s about different between use NaCl vs MgSO4 as a thickener? i think only difference is cloudpoint
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In the case of an anionic surfactant such as SLES, having Mg2+ as counterion increases its detergency, compared to Na+.
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Why Mg2+ can do that than Na+?
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I agree. It doesn’t make a difference.
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I usually don’t bring info from suppliers, but you can check this two references from Stepan, for a Mg laureth sulfate (https://www.stepan.com/content/stepan-dot-com/en/products-markets/product/STEPANOLMG.html) and Na laureth sulfate (https://es.stepan.com/content/stepan-dot-com/es/products-markets/product/STEOLCS270.html#:~:text=Es%20tensioactivo%20ani%C3%B3nico%20es%20un,una%20variedad%20de%20aplicaciones%20agr%C3%ADcolas.). Both CMC and Surface tension are lower for the Mg laureth sulfate (don’t mind about the concentration of both, the studies are made at the same solids level). This shows the difference in detergency between both surfactants.
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Makes no difference. You must be formulating for someone without any restrictions to still be using sulfates. Betaines will also thicken sulfates. Nowadays no one wants salt in their hair products nowadays. I am just used to working with very tight distributor and global restrictions to the point of breathing
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