[meteorite-list] nitric acid disposal

[Sharkkb8]

A while back I thought I'd try my hand at doing some iron-etching.  After a few less than impressive attempts, and with the increasing realization that nitric acid is tremendously nasty stuff, I'm now wanting to get rid of the (almost) gallon I have.  My local city Household Hazmat Disposal Center won't deal with it, as it's not "household" waste, and the Business Hazmat Disposal Center won't deal with it because I'm not a business.    I'm wondering if I could carefully effect some sort of dilution-process and dispose of it myself, and I welcome any advice or suggestions, on-list or off.  Thanx....      Gregory