Sedalia Dave Posted February 27 Share Posted February 27 (edited) Lots of people like to use Dawn dish soap when cleaning brass. How many are aware that Dawn dish soap contains a significant amount of sulphuric acid. Most formulations of Dawn has a ph between 9 and 9.5. However the Powerwash version has a ph of 11.1 This is the same ph as ammonia. The high ph levels in Dawn are why is cleans so well. HOWEVER, it also means that it will harm brass it left in contact with it for too long. Most other dish soaps and laundry soaps have a ph around 7.5 Discovered by accident how corrosive Dawn dish soap is. Now I always make it a point to read the SDS for a given cleaning product before I use it. Corrected the narritave. While is does contain Sulphuric Acid this is not the real issue What is concerning is that the ph is very basic (alkaline) which is just as bad as being too acidic. Edited February 27 by Sedalia Dave 6 5 Quote Link to comment Share on other sites More sharing options...
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