IARC MONOGRAPHS

In 1969, the International Agency for Research on Cancer (IARC) initiated a programme on the evaluation of the carcinogenic risk of chemicals to humans involving the production of critically evaluated monographs on individual chemicals. The programme was subsequently expanded to include evaluations of carcinogenic risks associated with exposures to complex mixtures, lifestyle factors and biological and physical agents, as well as those in specific occupations. The objective of the programme is to elaborate and publish in the form of monographs critical reviews of data on carcinogenicity for agents to which humans are known to be exposed and on specific exposure situations; to evaluate these data in terms of human risk with the help of international working groups of experts in chemical carcinogenesis and related fields; and to indicate where additional research efforts are needed. The lists of IARC evaluations are regularly updated and are available on the Internet at http://monographs.iarc.fr/.

This programme has been supported since 1982 by Cooperative Agreement U01 CA33193 with the United States National Cancer Institute, Department of Health and Human Services. Additional support has been provided since 1986 by the Health, Safety and Hygiene at Work Unit of the European Commission Directorate-General for Employment, Social Affairs and Equal Opportunities, and since 1992 by the United States National Institute of Environmental Health Sciences, Department of Health and Human Services. The contents of this volume are solely the responsibility of the Working Group and do not necessarily represent the official views of the U.S. National Cancer Institute, the U.S. National Institute of Environmental Health Sciences, the U.S. Department of Health and Human Services, or the European Commission Directorate-General for Employment, Social Affairs and Equal Opportunities.

This volume was made possible, in part, through Cooperative Agreement CR 834012 with the United States Environmental Protection Agency, Office of Research and Development. The contents of this volume do not necessarily reflect the views or policies of the U.S. Environmental Protection Agency.

• Published by the International Agency for Research on Cancer,
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• © International Agency for Research on Cancer, 2010
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The designations employed and the presentation of the material in this publication do not imply the expression of any opinion whatsoever on the part of the Secretariat of the World Health Organization concerning the legal status of any country, territory, city, or area or of its authorities, or concerning the delimitation of its frontiers or boundaries.

The mention of specific companies or of certain manufacturers’ products does not imply that they are endorsed or recommended by the World Health Organization in preference to others of a similar nature that are not mentioned. Errors and omissions excepted, the names of proprietary products are distinguished by initial capital letters.

The IARC Monographs Working Group alone is responsible for the views expressed in this publication.

IARC Library Cataloguing in Publication Data

• Some aromatic amines, organic dyes, and related exposures/IARC Working Group on the Evaluation of Carcinogenic Risks to Humans (2008: Lyon, France)
• (IARC monographs on the evaluation of carcinogenic risks to humans; v. 99)
• 1. Amines – toxicity 2. Barbering 3. Carcinogens 4. Colouring Agents – toxicity 5. Hair Dyes – toxicity 6. Occupational Exposure 7. Urinary Bladder Neoplasms – chemically induced.
• I. IARC Working Group on the Evaluation of Carcinogenic Risks to Humans II. Series
• ISBN 978 92 832 1299 7 (NLM Classification: Wl)
• ISSN 1017-1606
• PRINTED IN FRANCE

Cover: The composite structure brings together many of the chemical agents discussed and evaluated in this Volume; the background photograph illustrates occupational exposures of hairdressers and barbers, and personal use of hair colourants.

Cover photograph and design: Roland Dray (IARC). We gratefully acknowledge the gracious help of three of our colleagues in realizing the background photograph.