For more than 90 years, researchers around the world have relied on the CRC Handbook of Chemistry and Physics for authoritative, up-to-date data. This year will be no exception. New tables, extensive updates, and added sections mean the Handbook again sets a new standard for reliability, utility, and thoroughness. This Edition includes seven new tables:Vapor Pressure of the Metallic Elements Electrical Conductivity of Aqueous Solutions Proton Affinities Electron Inelastic Mean Free Paths Selected Properties of Semiconductor Solid Solutions Vapor Pressures (Solvent Activities) for Binary Polymer Solutions Density of Sulfuric Acid Substantial revisions and extensive updates of more than 20 tables including:NIST Atomic Transition Probability TablesSummary Tables of Particle PropertiesThreshold Limits for Airborne ContaminantsBond Dissociation Energy Standard Transformed Gibbs Energy of Formation for Important Biochemical SpeciesSources of Physical and Chemical Data appendixAnd more!The 86th Edition also marks a fresh look for the Handbook. A larger format and new layout makes it easier to read and a new typeface makes the tables and diagrams crystal clear.