Table 9. Migration levels of PA cyclic monomers and oligomers from ladles 1 (PA6), 8 (PA66), and 5 (PA6/66) into three simulants at 95°C.

PA cyclic monomers and oligomers	Ladle 1 (PA6)				Ladle 8 (PA66)				Ladle 5 (PA6/66)
	Water	20% Ethanol	Olive oil	Residual level	Water	20% Ethanol	Olive oil	Residual level	Water	20% Ethanol	Olive oil	Residual level
PA6 monomer	18	23	0.67	4.8	0.44	0.47	0.071	0.033	18	20	0.44	1.2
PA6 dimer	0.85	2.3	0.042	2.8	0.026	0.067	0.023	0.006	1.5	3.2	0.044	0.51
PA6 trimer	1.2	3.0	0.025	2.8	0.045	0.12	0.002	0.013	2.3	5.2	0.046	0.60
PA6 tetramer	3.4	10	0.017	4.6	0.092	0.30	ND	0.031	3.8	9.7	0.028	1.3
PA6 pentamer	3.0	11	ND	2.8	0.007	0.019	ND	0.010	0.16	3.9	ND	0.87
PA6 hexamer	1.3	7.4	ND	1.4	0.010	0.036	ND	0.009	0.20	2.1	ND	0.58
Subtotal	28	56	0.75	19	0.62	1.0	0.096	0.10	26	44	0.56	5.0
PA66 monomer	0.034	ND	0.003	0.11	39	860	0.54	2.8	46	1000	1.6	1.6
PA66 dimer	0.031	ND	ND	0.088	20	560	0.018	2.8	26	700	0.15	2.1
PA66 trimer	0.008	ND	ND	0.063	5.1	260	ND	2.3	7.2	480	ND	2.4
Subtotal	0.073	ND	0.003	0.26	64	1700	0.56	7.9	78	2200	1.7	6.1
Total	28	56	0.75	19.3	65	1700	0.66	8.0	104	2200	2.3	11.1

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.