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DSC Microscopy Kit

DSC‑mikroskopisystem.Mikroskopi‑alternativ för DSC-instrument

DSC-mätning med visuell observation

DSC-kurvor uppvisar ofta effekter som man inte kan förstå. I sådana fall är det till stor hjälp att observera vad som händer i provet.

Enheter som ingår i tillvalet mikroskopi

Ett DSC-mikroskopisystem innehåller en CCD-kamera med programvara för bildtagning och bearbetning som är synkroniserad med DSC-temperaturprogrammet.

Uppgraderingsmöjlighet

Det går att uppgradera en DSC till ett DSC-mikroskopisystem inom en minut, inklusive mätkapacitet för reflekterande ljusmikroskopi.

Material nr.: 51143087

Ring för offert
Specifikationer - DSC Microscopy Kit
Teknik
 Differentiell svepkalorimetri (DSC)
Typ
 Optisk analys
Tillbehör
 ja
Tillval
 Nej

Dokumentation

Produktbroschyrer

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...
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...
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...

Datablad

Datasheet: DSC-Microscopy System
Datasheet: DSC-Microscopy System
The system provides images of samples at predefined temperature or time intervals. A further evaluation possibility is to quantify color differences b...

Tillbehör

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.

Förbrukningsvaror

Software

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DSC Microscopy Kit