Chemical categorization corrosives

Concrete Bridge Protection and Rehabilitation Chemical and Physical Techniques—Service Life Estimates. Pre.sents definitions of end of service life of reinforced concrete bridge components exposed to chloride laden environments categorizes corrosive environments and defines end of... 

Almost all cooling water system deposits are waterborne. It would be impossible to list each deposit specifically, but general categorization is possible. Deposits are precipitates, transported particulate, biological materials, and a variety of contaminants such as grease, oil, process chemicals, and silt. Associated corrosion is fundamentally related to whether deposits are innately aggressive or simply serve as an occluding medium beneath which concentration cells develop. An American... 

Hazard Class A series of nine descriptive terms that have been established by the UN Committee of Experts to categorize the hazardous nature of chemical, physical, and biological materials. These categories are flammable liquids, flammable solids, explosives, gases, oxidizers, radioactive materials, corrosives, poisonous and infectious substances, and dangerous substances. 

Chemicals and chemical mixtures that attack the respiratory system are categorized as corrosives, irritants, and sensitizers. Though the term irritant is often applied in the literature to chemicals that are either corrosives or irritants, the definitions used here are those that follow. These definitions are identical to those used by toxicologists and regulatory agencies to classify the hazards due to chemical inhalation. 

Data from materials suppliers is useful and offers insight into the performance of specific materials. What is omitted from materials suppUers data is sometimes more revealing than what is included. Much of the information is developed under laboratory conditions in pure solutions. Manufacturers are reluctant to supply corrosion data that can be used for direct comparison of their alloys with competing products. ASTM G 157 [32] categorizes 15 test environments that cover a spectrum of processes in the chemical process... 

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