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aliphatic ester-like organic material with methyl and long-chain hydrocarbon character

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Resultaat nr.: 20241010202731212710091 Eigenaar: anna77 Reacties: 0
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FTIR ANALYSIS REPORT

FTIR Spectrum Analysis Report

No.: 20241010202731212710091 Date: 2024-10-10 12:28:28 Reported by: FTIR.fun Contact: [email protected]

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Top15

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Top 15 candidates

Reference library candidates

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Based on the library matches and evidence above.

Conclusion

aliphatic ester-like organic material with methyl and long-chain hydrocarbon character

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Conclusion
  1. Observed 1737 cm-1 carbonyl plus 1237 cm-1 C-O region support an ester-like functionality.
  2. Observed 2916, 2849, 1467, and 1370 cm-1 bands support a predominantly aliphatic hydrocarbon framework with methyl/methylene groups.
  3. Observed 719 cm-1 band supports long-chain hydrocarbon character, which fits an aliphatic ester-like material.
Evidence & interpretation
Evidence

Key evidence

Bibliotheek hoofdmatch
24937-78-8 #2024
Limitations

Evidence that limits the conclusion

  • The library match to 24937-78-8 has zero reported similarity and therefore does not provide credible support for a specific compound-level assignment.
  • The library consensus includes N-H as a direction clue, but the measured peak list does not show a reported N-H stretching band, S-O an N-H-containing narrow assignment is not supported.
  • The measured peak set does not provide enough distinguishing bands to justify the specific library material over other aliphatic ester-like substances.
  • The current evidence supports functional-group level interpretation more strongly than exact identity.
  • The carbonyl appears compatible with an ester, but the available peaks are insufficient to determine whether the sample is a simple ester, wax-like ester, plasticizer-related ester, or another aliphatic carbonyl-containing material.
  • Without stronger fingerprint-region matching or orthogonal data, the exact molecular structure and the relevance of the library CAS assignment remain uncertain.
Recommendation

Suggested next verification

  • Reacquire the FTIR spectrum with full fingerprint-region quality and report relative band intensities, especially from about 1800 to 650 cm-1.
  • Check specifically for additional ester C-O bands in the 1300-1000 cm-1 region and for any broad O-H or distinct N-H stretching bands to confirm or exclude alternative functionalities.
  • Compare the sample against reference spectra of long-chain aliphatic esters, wax esters, fatty acid esters, and common plasticizer-type esters.
  • If exact identification is needed, confirm by GC-MS or LC-MS for molecular composition, or by NMR if the sample is sufficiently pure.
Peak analysis

Detected peaks and interpretation

★ = Literature-supported peak assignment.

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Index Characteristic Wavenumber Absorbance Evidence One-line interpretation Citation Confidence
1 · 2916 1.00 - - - -
2 · 1237 0.80 - - - -
3 · 2849 0.80 - - - -
4 · 1737 0.69 - - - -
5 · 719 0.36 - - - -
6 · 1467 0.34 - - - -
7 · 1019 0.33 - - - -
8 · 1370 0.24 - - - -
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Appendix

Sample information and raw spectrum

Original uploaded spectrum for reference and verification.

Baseline correction was cancelled by the user.

The wavelength range for analysis(cm-1): [(650, 4000)]

Raw spectrum without baseline correction or other processing:

Sample spectrum image
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