Screening methods physical processing

Heat generation, physical processing, screening methods, 41-42... 

In a Downstream Decomposing facility not the subject of this example, intentional chemistry is performed as ammonium dichromate is heated to decomposition to make chromium dioxide, which is used in the production of magnetic tape products. In the Upstream Feeds facility under study, physical processing is performed as ammonium dichromate is fed through a screw conveyor. The Preliminary Screening Method is to be used as a first-cut determination whether chemical reactivity hazards will need to be managed in the physical processing facility. 

Passive controls, process controls, 97-98 Paterson, New Jersey incident, 160-161 Peroxide formers, screening methods, 46-48 Physical processing chemical reactivity hazard, 8-10,11 screening methods, 36, 41—42 worked examples, 128,129 Polymerizing compounds, screening methods, 55... 

Water-reactive materials, screening methods, 47,49-50, 51 Worked examples, 119-134 combustor, 120, 122-124,125 intentional chemistry, 119-120,121 mixing, 128,130-132 oxygen system, 133-134 physical processing, 128,129 repackaging, 124,126-127... 

It can be concluded that the ubiquitous presence of multiple physical and chemical reaction processes can make it more difficult to interpret isothermal microcalorimetry data for chemical degradation processes than one may imagine. Thus, there is a potential disadvantage for those who wish to use the calorimeter as a quick screening method. A real advantage is that there is a potential for using isothermal microcalorimetry with suitable theoretical models for sequential processes, which... 

Properties of substances are used in different areas screening methods process synthesis, and optimization. Environmen-, tal protection, transport, and handling are related to physical and chemical properties of substances. Depending on whether pure components or mixtures are being used, different properties are needed critical data, viscosity, enthalpy, or phase equilibria data have to be investigated. Furthermore, an arbi-,.>trary classification can be used related to task (environmental protection, safety, toxicology, chemical structure) or related to property (phase equilibria, critical data) or just experimental or calculated data. 

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