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International Agency for Research on Cancer (IARC) - Summaries & Evaluations

TANNIC ACID AND TANNINS

VOL.: 10 (1976) (p. 253)

CAS No.: 1401-55-4
Chem. Abstr. Name: Tannic Acid

5. Summary of Data Reported and Evaluation

5.1 Animal carcinogenicity data

Tannic acid is carcinogenic in rats following its subcutaneous injection; it produced liver tumours. In mice, subcutaneous injection of hydrolysable tannins produced liver tumours, and that of condensed tannins produced both local sarcomas and liver tumours. No adequate published studies involving oral administration of tannins were available to the Working Group.

5.2 Human carcinogenicity data

No case reports or epidemiological studies were available to the Working Group.

Subsequent evaluation: Suppl. 7 (1987) (p. 72: Group 3)

For definition of Groups, see Preamble Evaluation.

Synonyms for Tannic acid


Last updated: 22 March 1998






















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