Summary of Identified Organic Extractables from the Rubber, LC Analysis

PeakIdentificationcCAS RN
Set AaSet Bb
f1gHexanoic acid morpholide17598-10-6
2gDihydroxy stearic acid858802-85-4i
3g9,10-Epoxy stearic acid (cis/trans)13980-07-9
4g9,10-Epoxy stearic acid (cis/trans)24560-98-3
72,6-Bis-(1,1-dimethylethyl)-4-methyl-phenol, BHTe128-37-0
78gHexadecanoic (Palmitic) acide57-10-3
10gPalmitic acid morpholided5299-68-3
1211gOctadecanoic (Stearic) acide57-11-4
12gStearic acid morpholided5299-54-7
133,5-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] estere84633-54-5
15gDiglyceride, epoxidizedN/A
16gDiglyceride, epoxidizedN/A
173,5-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 1010e6683-19-8
3Tetradecanoic (Myristic) acide544-63-8
5,6Unspecified 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.