Would you know if it is too old to use?

The text on the bag says:
Organic Nitrogen, 5-10-5, Guaranteed Analysis
2.5% Ammoniacal Nitrogen
1.5% Water Insoluble Nitrogen
1.0% Water Soluble Urea Nitrogen
Available Phosphoric Acid (P2O5) 10%
Soluble Potash (K2O) 5.0%
Derived from ureaform, ammoniated phosphate, superphosphate and muriate of potash. Potential Acidity 0 lbs. Calcium Carbonate Equivalent per ton. Manufactured by Estech, Inc., Chicago.....Gro-Tone®. Directions.....3-4 lbs per 100 sq.ft.

Are all the contents organic? If I used it, would it kill micro bacterial action in the soil? Would it harm earth worms and other beneficials? Would it work if I dissolved a few cups in a tub of water and fed the liquid to the plants?

Thanks so much for your time and information........I'm a novice when it comes to fertilizers. Never did understand them.......