Reactivity and stability of the chemical are important parameters for the production of a desirable product as well as safe operation of a production facility. The actual stability of a chemical is usually difficult to predict quantitatively. This is because both thermodynamics and kinetics dictate the behavior of a chemical at any temperature. Whereas the thermodynamic data can be predicted with reasonable accuracy for most reactions, the kinetics are much more difficult to predict.
There is no generally applicable technique to quantitatively predict kinetics of decomposition in the condensed phases and hence allow one to accurately predict "chemical stability" of industrially important chemical compounds. Advanced Reactive System Screening facility is meant to study these issues in detail.
Advanced Reactive Screening System (ARSS)
The ARSS is the product of extensive research into runaway chemical reactions and their impact on process system dynamics by Fasuke and Associates. It is designed to simplify the acquisition of data necessary for thermal hazards analysis, runaway reaction evaluations, and the proper sizing of pressure relief vents. The ARSS uses a 10 ml sample contained in an open, well-insulated glass test cell. This configuration minimizes heat sink effects (phi = 1.04). The ARSS’s unique design allows one to acquire reliable adiabatic pressure and temperature rate data that are difficult to obtain with other commercially available instruments. Solids as well as liquids may be tested. The patented flow regime detector can distinguish between foamy and non-foamy behavior.
Features and Capabilities
- Windows based operating software
- Operation in heat-wait-search mode
- Flow regime detection
- Easily handles phase change
- Low exothermic onset temperature detection (as low as 0.1ºC/min.)
- User defined scan rates up to 30°C/min.
- Temperature measurement from -50°C to 500°C
- Measure containment gas temperature