Preface
This handbook features selected articles from the 7th edition of ULLMANN’S Encyclopedia of
Industrial Chemistry, including newly written articles that have not been published in a printed edition
before. True to the tradition of theULLMANN’S Encyclopedia, products and processes are addressed
from an industrial perspective, including production figures, quality standards and patent protection
issues where appropriate. Safety and environmental aspects which are a key concern for modern
process industries are likewise considered.
More content on related topics can be found in the complete edition of the ULLMANN’S
Encyclopedia.