Funny thing about chemicals - i know that pool acid i used in the past was an imprecise blended hydrochloric -. I also know that battery acid i used as a mechanic was a clean sulfuric - for use in distilled water. I would not make any assumptions. I did find out that the soda ash I was buying for my pool was anhydrous 100% sodium carbonate, that stuff I am using in photo chemistry - I did hunt down the MSDS on the BRAND of chemical I was using to find out though.