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.