Information Related to the GC Peaks Associated with Organic Extractables from the Rubber
| Peak # | Identification | CAS RN | Highest Concentration In Extract | ||
|---|---|---|---|---|---|
| Set Aa | Set Bb | Medium | Type | ||
| 28 | 8 | Octadecanoic (Stearic) acidc | 57-11-4 | Hexane | Soxhlet |
| 21 | 5 | Hexadecanoic (Palmitic) acidc | 57-10-3 | Hexane | Soxhlet |
| — | 3 | C-21 oligomerd,f | — | Hexane | Soxhlet |
| — | 13 | Oleamidec | 301-02-0 | IPA | Soxhlet |
| 24 | 7 | Isopropyl palmitatec | 142-91-6 | Hexane | Soxhlet |
| — | 6h | Unsaturated aliphatic hydrocarbon | — | Hexane | Soxhlet |
| — | 15 | Octadecaned | 593-45-3 | IPA | Soxhlet |
| — | 16 | Octacosanec | 630-02-4 | IPA | Soxhlet |
| 36 | 17 | 1-(4-Morpholinyl)-octanoic acidd | 5299-54-7 | IPA | Soxhlet |
| — | 1 | Morpholinec | 110-91-8 | IPA | Reflux |
| — | 14 | Tetracosanec | 646-31-1 | IPA | Soxhlet |
| — | 19 | Aliphatic hydrocarbone | — | IPA | Soxhlet |
| — | 12 | 10-Oxo-octadecanoic acidd | 870-10-0 | IPA | Reflux |
| — | 18 | 4,4'-Dioctlydiphenylaminec | 101-67-7 | IPA | Reflux |
| — | 2 | C13-oligomer, brominatedd,g | — | IPA | Reflux |
| — | 10 | Hexadecanamidec | 629-54-9 | IPA | Reflux |
| — | 11 | Docosaned | 629-97-0 | IPA | Reflux |
| 20 | 4 | Methyl-n-hexadecanoatec | 112-39-0 | IPA | Reflux |
| 26 | 9 | Octadecanoic acid, methyl esterd | 112-61-8 | Hexane | Soxhlet |
| 33 | — | Nonadecanoic acidd | 646-30-0 | pH 9.5 | Sealed |
| 11 | — | Diethyl phthalated | 84-66-2 | pH 2.5 | Sealed |
| 32 | — | 9-Oxo-octadecanoic acid, methyl estere | 1842-70-2 | IPA/Water | Sealed |
| 17 | — | Tri-tert-butyl-di-hydroxy benzenee | 24851-96-5 | IPA/Water | Sealed |
| 10 | — | Dodecanoic acidd | 143-07-7 | pH 9.5 | Sealed |
| 38 | — | n-Decanoyl morpholinee | 5299-65-0 | IPA/Water | Sealed |
Notes:
↵a In the sealed vessel extracts, see Figures 11, 12. These extracts contained several extractables at levels less than 10 μg/g whose peaks are numbered in the chromatograms but whose associated compounds were not established, specifically peaks 1, 6, 8, 9, 12, 13, 15, 16, 18, 19, 22, 23, 24, 27, 29, 30, 31, 34, 35, 37, and 39. These extracts also contained extractables above 10 μg/g whose identities could not be established, specifically peaks 2–5, 7, 14, and 25.
↵b In the solvent extracts, Soxhlet and reflux, see Figures 15, 16.
↵c These identifications are classified as confirmed.
↵d These identifications are classified as confident.
↵e These identifications are classified as tentative.
↵f 1-Isopropenyl-2,2,4,4-tetramethyl-6-(2,2,4-trimethyl-pentyl-1-)-cyclohexane, C21H40.
↵g 1-(1-Bromoethylethenyl)-2,2,4,4-tetramethylcyclohexane, C13H23Br.
↵h This peak was present in the extract chromatogram but was not labeled in the relevant figure.