On the Migration of Melamine in Melaminoplastic Tablewares

The sample of melaminoplastic tableware was soaked with acetic acid, and melamine in the solution obtained was determined by HPLC. Conditions of kinds of soaking solution, soaking temperature, soaking time, size of sample and number of time of soaking were studied. It was found that the amount of melamine migrated increased with increase of acidity of solution, soaking temperature, soaking time and with decrease of size of sample. Furthermore, the amount of melamine soaked out from the tablewares in each soaking, decreased with the increase of number of time of soaking.