The determination of nigrosine

Crompton (1971). Chemical Analysis of Additives in Plastics, Pergamon Press, Oxford. 

Haslam, H. A. Willis and D. C. M. Squirrell (1977). Identification and Analysis of Plastics, (2nd edn), Iliffe Books, London. 

Freitag (1990). In Plastics Additives Handbook, eds. R. Gachter, H. Muller and P. P. Klemchuk, Hanser, Munich, pp. 909-946. 

Scholl (1981). Atlas of Polymer and Plastics Analysis, Vol. 3, Hanser, Munich. 

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