- #1
JT Smith
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- 637
- TL;DR Summary
- Will the presence of a small amount of an anticaking agent (calcium silicate or sodium aluminosilicate) present in commercially available table salt significantly affect the equilibrium humidity of a saturated salt/water solution?
I want to test a humidity sensor with one or more saturated salt solutions. The table salt that I have on hand contains one of two anticaking agents, calcium silicate or sodium aluminosilicate. Will the presence of either of these additives (or iodine for that matter) significantly affect the equilibrium humidity?
I searched and all the how-to-do-it guides did not address this question. One research paper I found reported that at 1.5% w/w calcium silicate increased the deliquescent point by 1.5% RH but I'm not entirely sure what to do with that. The search AI assist responses warned me that these agents could be an issue but could not be specific. ChatGPT provide a response that was tainted with some obvious nonsense.
So I came here. :-)
I searched and all the how-to-do-it guides did not address this question. One research paper I found reported that at 1.5% w/w calcium silicate increased the deliquescent point by 1.5% RH but I'm not entirely sure what to do with that. The search AI assist responses warned me that these agents could be an issue but could not be specific. ChatGPT provide a response that was tainted with some obvious nonsense.
So I came here. :-)
