Members whinewine Posted September 20, 2010 Members Report Posted September 20, 2010 Simply put, it makes the water wetter for longer because it doesn't evaporate as fast. Not to be a knowitall, Spinner, but the reason the water is wetter is that a surfactant, such as a detergent (unlike soap) breaks the water's surface tension. When I used to develop my own photographic prints, negatives & transparencies in the darkroom, I used a kodak product called "Photo-flo" to break the surface tension of water in the washing process: otherwise, the prints, slides & negs would dry spotty. russ Quote
hidepounder Posted September 20, 2010 Report Posted September 20, 2010 The additive Bobby was referring to in the Joy dish soap is Ethylene Glycol. It's used in a number of products as a moisture extender. Simply put, it makes the water wetter for longer because it doesn't evaporate as fast. Not to be a knowitall, Spinner, but the reason the water is wetter is that a surfactant, such as a detergent (unlike soap) breaks the water's surface tension. When I used to develop my own photographic prints, negatives & transparencies in the darkroom, I used a kodak product called "Photo-flo" to break the surface tension of water in the washing process: otherwise, the prints, slides & negs would dry spotty. russ Thanks you guys.....I knew someone a lot smarter than me could tell us why I like Joy soap in my water! I'm saving this so that the next time someone asks me I'll sound like I know what I'm talking about, LOL! Is this forum not the best place to be? Bobby Quote
Members Spinner Posted September 20, 2010 Members Report Posted September 20, 2010 (edited) Not to be a knowitall, Spinner, but the reason the water is wetter is that a surfactant, such as a detergent (unlike soap) breaks the water's surface tension. When I used to develop my own photographic prints, negatives & transparencies in the darkroom, I used a kodak product called "Photo-flo" to break the surface tension of water in the washing process: otherwise, the prints, slides & negs would dry spotty. russ Thanks Russ, I was simply passing on the information I gathered when this question can up previously. It actually looks like we're both on the right track though. In reading up on it more after your response, it looks to be both things working in concert since without the glycerin additive, the surfacted water simply dries more uniformly (hence the term "Sheeting action") but at a similar rate. Glycerin extends the drying time of liquids due to a higher evaporation point and is also an additive in many detergents & soaps (as well as fog machine liquid, fake tears/sweat and professional bubble blowing mixtures). *Note - I was incorrect about calling it Ethylene Glycol...that's an additive in radiator fluid. LOL Edited September 20, 2010 by Spinner Quote Chris Three Mutts Customs Leather - http://www.threemuttscustoms.com
Members BondoBobCustomSaddles Posted September 20, 2010 Members Report Posted September 20, 2010 Thanks Russ, I was simply passing on the information I gathered when this question can up previously. It actually looks like we're both on the right track though. In reading up on it more after your response, it looks to be both things working in concert since without the glycerin additive, the surfacted water simply dries more uniformly (hence the term "Sheeting action") but at a similar rate. Glycerin extends the drying time of liquids due to a higher evaporation point and is also an additive in many detergents & soaps (as well as fog machine liquid, fake tears/sweat and professional bubble blowing mixtures). *Note - I was incorrect about calling it Ethylene Glycol...that's an additive in radiator fluid. LOL Ok, Bobby I know you are at least close to me in age, not sure about the other guys, but; this is beginning to sound like one of those TV commercials from the 50's for joy soap! Whew! Dejaveue! And you are right, great place to be,.....with friends. Bondo Bob Quote
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