5. Physico-Chemical Properties for REACH – Purpose and Practicalities

  1. Peter Fisk

Published Online: 1 NOV 2013

DOI: 10.1002/9781118683989.ch5

Chemical Risk Assessment

Chemical Risk Assessment

How to Cite

Fisk, P. (2013) Physico-Chemical Properties for REACH – Purpose and Practicalities, in Chemical Risk Assessment, John Wiley & Sons, Ltd, Chichester, UK. doi: 10.1002/9781118683989.ch5

Publication History

  1. Published Online: 1 NOV 2013
  2. Published Print: 13 DEC 2013

ISBN Information

Print ISBN: 9781119953685

Online ISBN: 9781118683989

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Keywords:

  • Physico-chemical;
  • physchem;
  • testing plans;
  • multiconstituent;
  • UVCB mixtures;
  • hydrolysis;
  • photolysis;
  • oxidation;
  • ionisable substances;
  • ions;
  • surface active substances;
  • hazardous;
  • data;
  • flammability;
  • explosive;
  • inflammable;
  • flammable;
  • boiling point;
  • bp;
  • melting point;
  • mp;
  • surface tension;
  • Henry's law;
  • (Q)SAR

Summary

As part of the assessment process, it is necessary to submit certain physico-chemical data on the substance to be registered. This must start with a clear understanding of the substance identity (see Section 4.1 and Appendix B of this book) and the physico-chemical properties that are associated with such substance. This permits a proper assessment of other endpoints, such as toxicology, environmental fate and exposure assessment, and is essential for ecotoxicology. The basic physico-chemical data endpoints (i.e. types of properties) required at Annex VII of the REACH regulation for all substances are melting point (mp), boiling point (bp), density, granulometry (particle size distribution), vapour pressure, octanol-water partition coefficient (Kow), water solubility, surface tension, flash point, flammability (including pyrophoricity and flammability in contact with water), auto-flammability or self-ignition temperature, explosive properties, and oxidising properties. This chapter explains each of these properties, the use of (Quantitative) Structure-Activity Relationships ((Q)SAR) models and how they influence the other endpoints.