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. 2016 Jul 25;11(7):e0159547. doi: 10.1371/journal.pone.0159547

Table 8. Migration levels of PA cyclic monomers and oligomers from the sesame grinder (PA6) and cake server (PA6/66) into three simulants at 60°C.

PA cyclic monomers and oligomers Sesame grinder (PA6) Cake server (PA6/66)
Water 20% Ethanol Olive oil Residual level Water 20% Ethanol Olive oil Residual level
PA6 monomer 20 21 0.60 3.7 2.5 3.3 0.028 1.6
PA6 dimer 2.5 7.7 0.067 0.8 0.49 0.90 0.003 0.32
PA6 trimer 3.6 9.8 0.034 1.6 0.54 1.3 0.003 0.52
PA6 tetramer 6.2 20 0.008 5.0 0.81 2.1 ND 1.4
PA6 pentamer 1.5 6.1 ND 2.8 0.069 0.69 ND 0.82
PA6 hexamer 0.15 1.5 ND 1.3 0.025 0.11 ND 0.45
Subtotal 34 66 0.71 15 4.5 8.4 0.033 5.1
PA66 monomer ND ND ND ND 9.7 24 0.083 3.7
PA66 dimer ND ND ND ND 4.2 11 0.004 3.9
PA66 trimer ND ND ND ND 0.33 2.3 ND 3.8
Subtotal ND ND ND ND 14 37 0.087 12
Total 34 66 0.71 15 19 45 0.12 17

Each value (migration level: μg/cm2; residual level: mg/g) is mean of two trials.

ND (migration level): < 0.002 μg/cm2; ND (residual level): < 0.002 mg/g.