| Diisopropanolamine (DIPA) | C6H15NO2 | ND1 | ND1 | 0.2 | 0.2 |
| Diethanolamine (DEA) | C4H11NO2 | ND1 | ND1 | 0.1 | 0.1 |
| N-methyl, N, N, N, Tris (2hydroxylethyl) ethylenediamine (MTHEED) | C9H22N2O3 | ND1 | ND1 | ND1 | 0.1 |
| N, N'dimethylpiperazine (DMP) | C6H14N2 | ND1 | ND1 | ND1 | 0.1 |
| Other products mentioned in Table 1 |
| ND1 | ND1 | ND1 | ND1 |