Chemical Reactivity
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Chemical Reactivity
Chemical Reactivity
In order to run a safe manufacturing process, it is critical to understand the individual reactions within the process. These reactions can be exothermic or endothermic, each of which can be hazardous. These reactions could be a part of the desired chemistry of the process. However, these reactions could also be caused by undesired chemistry such as side reactions. Environmental changes can also result in undesired chemistry. Therefore, identification and assessment of these reactions is important especially during the scaleup of an operation. Belmont Scientific provides cost effective testing which is listed in the table below.
| Properties Measured/Estimated | Standard or Test Technique | Key Test/Instrument |
|---|---|---|
| Onset temperature Heat flow rate Heat of melt Latent heat of evaporation Melting/boiling temperature Enthalpy of endotherm Enthalpy of exotherm | ASTM E537 Standard Test Method for the Thermal Stability of Chemicals by Differential Scanning Calorimetry (DSC) | Differential Scanning Calorimeter (DSC) by TA Instrument |
| Heat capacity | ASTM E1269 Standard Test Method for Determining Specific Heat Capacity by Differential Scanning Calorimeter (DSC) | Differential Scanning Calorimeter (DSC) by TA Instrument |
| Onset temperature Temperature rise rate Pressure rise rate Heat of reaction Amount of gas generated | ASTM E1981-98 (2012)e1 Standard Guide for Assessing Thermal Stability of Materials by Method of Accelerating Rate Calorimetry (ARC) | ARC from CSI and ARC 254 from Netzsch Group of Selb, Germany (High Thermal Inertia) |
| Onset temperature Temperature rise rate Pressure rise rate Heat of reaction Amount of gas generated Vent flow regime | ASTM E1981-98 (2012)e1 Standard Guide for Assessing Thermal Stability of Materials by Method of Accelerating Rate Calorimetry (ARC) | Vent Size Package 2 (VSP2) from Fauske & Associate, LLC, Burr Ridge, IL USA (Low Thermal Inertia) |
On-site Calorimetry Testing: BSI provides on-site thermal hazard testing services using DSC, ARC®, and VSP2.
Shock Sensitivity Testing: BSI uses a blasting cap test method to characterize materials for shock sensitivity. Test uses about a 15ml sample size and is a Go/No-Go test. This test can also be performed on-site.
