Grinew; Terentjew Zhurnal Obshchei Khimii, 1958 , vol. 28, p. 75,77 J. Gen. Chem. USSR (Engl. Transl.), 1958 , vol. 28, p. 77,78 Full Text Show Details I.G. Farbenind. Patent: DE498360 , 1928 ; Fortschr. Teerfarbenfabr. Verw. Industriezweige, vol. 17, p. 1138