Acura, just like with any other Honda or Japanese vehicle is specified to use no silicates. The Honda coolant is a phosphated HOAT. The engine is an aluminum type. Almost any coolant, if you do not exceed its specified use interval, will work fine for your Acura. However, apparently Honda has stated they do not endorse the use of 2EHA in their coolant.
Among other options, Honda sells their blue type 2, Zerex has an Asian formula, so does Beck & Arnley, and Pentosin sells some phosphated long-life. But those are notably more expensive. Low silicated coolants such as Zerex G-05, Pennzoil, and Shellzone (among others) will also work fine.
Again, if you change it every other year, almost anything will work for your vehicle.