I want to try out citric acid for both solid and liquid soaps. There have been many thread, here is one: http://www.soapmakingforum.com/showthread.php?t=27015_ I use Soapmaker 3 so what I'd like to do is enter Citric Acid as an oil and allow the program to calculate the lye amount. Quite frankly I don't trust my math or science skills... This is what I've found for SAP values: SAP value is 0.571 for monohydrate citric acid. SAP value is 0.625 for anhydrous citric acid. (nubers come from this post-http://forum.thesage.com/comments.php?DiscussionID=99) So my question is, do these sound like appropriate values? Also, monohydrate vs anhydrous... I didn't even know there was a difference to tell you the truth. Mine is not labeled as either. I assume I have monohydrate. It's the crystallized stuff that you use in bath bombs. My Google-Fu tells me "monohydrate forms when citric acid is crystallized from cold water" TIA to all of you sciencey types out there that have a moment to answer!