njtsrnAfter doing a websearch, I think it means New Jersey Trade Secret Registry Number (njtsrn)...some chemical that's top secret, I guess.
Organic acids, could be any combination of Sebacic Acid, Benzoic Acid, Decanoic Acid, EHA (Ethyl Hexanoic Acid). Those are the typical organic acids used in extended life coolants.
Some examples that would be considered an acid: sulfuric acid, nitric acid, hydrofluoric acid, perchloric acid, boric acid, periodic acid, salicilic acid, stearic acid, citric acid, oxalic acid, etc.