We are in long time need of Ortho-Toluene diamine .Ortho-Toluene diamine, also named OTDA, OTDCAS NO.:Including two compontents :3,4-Toluenediamine: CAS:496-72-0 60%2,3-Toluenediamine: CAS:2687-25-4 40%At present , we need 500 tons/ month .Pls kindly contact with us if you have this product, thank you!Julia Li Show More