Summary of Identified Organic Extractables from the Rubber, LC Analysis
| Peak | Identificationc | CAS RN | |
|---|---|---|---|
| Set Aa | Set Bb | ||
| —f | 1g | Hexanoic acid morpholide | 17598-10-6 |
| — | 2g | Dihydroxy stearic acid | 858802-85-4i |
| — | 3g | 9,10-Epoxy stearic acid (cis/trans) | 13980-07-9 |
| — | 4g | 9,10-Epoxy stearic acid (cis/trans) | 24560-98-3 |
| — | 5 | 3,5-Bis(1,1-dimethylethyl)-4-hydroxy-benzaldehydee | 1620-98-0 |
| — | 6g | 2,6-Di-tert-butylbenzoquinoned | 719-22-2 |
| — | 7 | 2,6-Bis-(1,1-dimethylethyl)-4-methyl-phenol, BHTe | 128-37-0 |
| 7 | 8g | Hexadecanoic (Palmitic) acide | 57-10-3 |
| — | 9g | Oleamidee | 301-02-0 |
| — | 10g | Palmitic acid morpholided | 5299-68-3 |
| 12 | 11g | Octadecanoic (Stearic) acide | 57-11-4 |
| — | 12g | Stearic acid morpholided | 5299-54-7 |
| — | 13 | 3,5-Bis(1,1-dimethylethyl)-4-hydroxy-benzenepropanoic acid, 1,1'-[2-[[3-[3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl]-1-oxopropoxy]methyl]-2-(hydroxymethyl)-1,3-propanediyl] estere | 84633-54-5 |
| — | 14 | Dioctyldiphenylaminee | 101-67-7 |
| — | 15g | Diglyceride, epoxidized | N/A |
| — | 16g | Diglyceride, epoxidized | N/A |
| — | 17 | 3,5-Bis(1,1-dimethylethyl)-4-hydroxy-benzenepropanoic acid, 1,1'-[2,2-bis[[3-[3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl]-1-oxopropoxy]methyl]-1,3-propanediyl] ester, Irganox 1010e | 6683-19-8 |
| 1h | — | Morpholined | 110-91-8 |
| 3 | — | Tetradecanoic (Myristic) acide | 544-63-8 |
| 5,6 | — | Unspecified oligomers | — |
Notes:
↵a In the sealed vessel aqueous extracts, see Figures 13, 14. The chromatograms contained additional peaks whose associated extractables could not be identified; for example, peaks 2, 4, and 8–11.
↵b In solvent extracts, Soxhlet and reflux, see Figure 17.
↵c These identifications are classified as tentative unless otherwise noted.
↵d These identifications are classified as confident.
↵e These identifications are classified as confirmed.
↵f — = not detected.
↵g Not shown in the LC/UV chromatograms, Figure 17, but present in the LC/MS chromatograms.
↵h This peak was present in the extract chromatogram but was not labeled in the relevant figure.
↵i The listed compound is an example of the possible isomers of this extractable and may not be the exact isomer that was encountered in this study.