At the end of analysis, the amount of residue is 44.56% from total weight which is higher compared to native sago starch. This is due to the presence of ash and sodium salt in CMSS. By comparing the maximum temperature for both sago starch and CMSS, the derivatization caused the decomposition of sago starch shifted toa lower temperature (277.52◦C). This result is similar to the work by Wang, Pan, Hu, Miao, and Xiao-Yun (2010), in which the modified starch was reported to have lower degradation temperature from its native starch