Oxidative Stability of Rosins

Rosin is a complex mixture, mainly consisting of various isomers of rosin acid. When exposed to air for a long period, rosins are easily discolored by oxidation. High-pressure DSC (HPDSC) can be used to determine oxidative stability of various rosins and rosin products. The measurement method is as follows  

Weigh 5-7 mg of rosin sample in a container. Note that the sample must be taken from the 

Determine the time required for the oxidation exotherm. The times for the oxidation exotherms of pale wood rosin fines and gum rosin were determined to be 6 and 30 min, respectively [38]. 

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