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Analytical Instruments Thermal Analysis Excellence Thermal Analysis Options and Accessories Microscopy Package DSC STAReCapture

Microscopy Package DSC STAReCapture

DSC Measurements with Visual Observation.

Imaging possibilities

use visual information to aid result interpretation

Intuitive user interface

for simple and easy-to-learn operation

Seamless process

efficient, step-by-step guidance through the visual analysis

Material No.: 30908684

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Specifications - Microscopy Package DSC STAReCapture
Technique
 Differential Scanning Calorimetry (DSC)
High Pressure Differential Scanning Calorimetry
Accessory
 Yes

Quick and easy upgrade

convert a DSC into a microscopy system in just minutes.

Content of the package

camera, cable, DSC zoom optics, LED light source with polarizing unit, STAReCapture software and documentation

Documentation

Product Brochures

DSC 3 Product Brochure
Brochure: DSC 3
Differential scanning calorimetry (DSC) is the most frequently used thermal analysis technique. DSC measures enthalpy changes in samples due to change...
HP DSC 2+ Product Brochure
Brochure: HP DSC 2+
Increased pressure is a factor that influences all physical changes and chemical reactions in which a change in volume occurs. For material testing, p...
The Future of Thermal Analysis Brochure
Brochure: The Future of Thermal Analysis
Thermal Analysis comprises a group of techniques that measure the physical or chemical properties of a sample as a function of temperature or time whi...
Brochure: STARe Excellence Software
Brochure: STARe Excellence Software
Thermal analysis is a well-established analytical method that is widely used in many different fields. It provides laboratories with valuable results...

Datasheets

Datasheet: DSC-Microscopy System
Datasheet: DSC-Microscopy System
Enhance your DSC analysis with METTLER TOLEDO's microscopy system. Visualize thermal transitions, identify effects, and improve result interpretation...

Accessories

Application Examples


   
DSC-microscopy analysis of an active pharmaceutical ingredient

The melting point is an important characteristic property of a substance. The DSC measurement of an active pharmaceutical substance (API) yielded a curve with two main peaks – an endothermic peak with a maximum at 210.8 °C and an exothermic peak at about 228 °C. A smaller peak was also apparent between these two peaks at about 214 °C. The initial interpretation was that the endothermic peak at 210.8 °C is due to melting. The DSC-microscopy results, however, told a different story. No melting was observed at 211 °C – the first signs were detected at about 214 °C. Clearly, the endothermic DSC peak is not caused by a melting process. The color change of the molten substance leads one to conclude that it decomposes immediately on melting. The small DSC peak observed at about 214 °C is therefore the sum of two simultaneously occurring effects – endothermic melting and exothermic decomposition. Separate TGA-MS measurements showed that the endothermic DSC peak at 210.8 °C is caused by the evaporation of water of crystallization.
 



Dehydration of CoCl2 hexahydrate

The images illustrate the dehydration process of cobalt (II) chloride hexahydrate when it is heated from 30 °C at 1.5 K/min. The initial ruby-red color becomes lighter and lighter until it suddenly changes at about 55 °C. Further color changes are observed between 100 °C and 120 °C and at 160 °C. The differences can be quantified by calculating a curve showing image brightness as a function of temperature. The DSC curve shows a broad endothermic peak up to 80 °C with a sharp peak at about 55 °C superimposed on it. Two further endothermic peaks follow at about 104 and 130 °C. The brightness first increases and then suddenly decreases at about 55 °C. Afterward, it increases again in several steps. The peak at about 55 °C is due to a change in crystalline structure. The images around 55 °C show small droplets of water on the surface of the crystals. This indicates that part of the water of crystallization eliminated from the crystal lattice during the solid- solid transition collects on the surface of the crystals and then evaporates. This is completed by about 80 °C. The two broad endothermic peaks on the DSC curve and the step-like changes in the brightness are due to further loss of water of crystallization.

Consumables

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Microscopy Package DSC STAReCapture