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oxygen-containing material with possible methyl and halogen-related features

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Tulemuse nr.: 20250401174926015734853 Omanik: Admin Kommentaarid: 1
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FTIR ANALYSIS REPORT

FTIR Spectrum Analysis Report

No.: 20250401174926015734853 Date: 2025-04-02 06:14:57 Reported by: FTIR.fun Contact: [email protected]

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Top15

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Top 15 candidates

Reference library candidates

Rank Match % Compound Name Formula / SMILES Library preview Action
Reference candidates load with this Top-15 workbench.

Based on the library matches and evidence above.

Conclusion

oxygen-containing material with possible methyl and halogen-related features

General assessment
-
#16409 Initial rank 1 Current rank 1 Library lead match 0.0%
Conclusion
  1. Observed peaks at 1726 cm-1 and 3616-3843 cm-1 support oxygen-bearing functionality.
  2. Library candidate features repeatedly include oxygen, hydroxyl, C-O single-bond, and methyl-related clues.
  3. The Top-15 candidate pattern also contains some halogen-related suggestions, especially bromine/chlorine, which justifies keeping halogen-related character as a tentative broad direction rather than a specific assignment.
Main limitation

The leading library match is oxidane, but the sample contains a carbonyl band at 1726 cm-1, which is not consistent with pure water as the sample identity.

Evidence & interpretation
Evidence

Key evidence

Raamatukogu juhtiv vaste
oxidane #16409 | match 0.0%
Materjali suund
oxygen-containing material with possible methyl and halogen-related features The FTIR evidence does not support a firm identification of a specific compound. Library matching is effectively non-discriminating here, with all leading candidates at zero similarity, so the top library name cannot be treated as a reliable chemical assignment. The observed spectrum is better described conservatively as an oxygen-containing material showing a strong carbonyl band near 1726 cm-1, high-wavenumber O-H features around 3616-3843 cm-1, and weak low-specificity clues that may be consistent with methyl and possibly halogen-related contributions. This is too limited and internally inconsistent to justify concluding the sample is oxidane or any other specific library entry.
Support

Evidence supporting the conclusion

Only sample-relevant statements that support the present conclusion are shown here.

  1. The FTIR evidence does not support a firm identification of a specific compound. Library matching is effectively non-discriminating here, with all leading candidates at zero similarity, so the top library name cannot be treated as a reliable chemical assignment. The observed spectrum is better described conservatively as an oxygen-containing material showing a strong carbonyl band near 1726 cm-1, high-wavenumber O-H features around 3616-3843 cm-1, and weak low-specificity clues that may be consistent with methyl and possibly halogen-related contributions. This is too limited and internally inconsistent to justify concluding the sample is oxidane or any other specific library entry.
  2. Observed peaks at 1726 cm-1 and 3616-3843 cm-1 support oxygen-bearing functionality.
  3. Library candidate features repeatedly include oxygen, hydroxyl, C-O single-bond, and methyl-related clues.
  4. The Top-15 candidate pattern also contains some halogen-related suggestions, especially bromine/chlorine, which justifies keeping halogen-related character as a tentative broad direction rather than a specific assignment.
  5. A strong band at 1726 cm-1 supports the presence of a carbonyl-containing component.
  6. Bands at 3616, 3736, and 3843 cm-1 indicate high-wavenumber O-H stretching consistent with free or weakly hydrogen-bonded hydroxyl-containing material, adsorbed moisture, or surface hydroxyls.
  7. The band at 1560 cm-1 is not sufficient on its own to define a specific structure and could arise from several chemical environments.
  8. The low-wavenumber band at 724 cm-1 can occur in multiple settings and is not specific enough here to prove a particular halogenated compound.
  9. The library Top-15 pattern loosely points to methyl and bromine-related clues, but this pattern is not anchored by a meaningful spectral similarity score.
Limitations

Evidence that limits the conclusion

  • The leading library match is oxidane, but the sample contains a carbonyl band at 1726 cm-1, which is not consistent with pure water as the sample identity.
  • All reported top library similarities are 0.0, so the retrieval does not provide positive match evidence for any named compound.
  • Hydrogen sulfide and oxidane appearing together among top candidates indicates the search result is not chemically coherent enough for an entity-level conclusion.
  • No direct literature match or reference interpretation supports a narrower assignment such as a specific brominated, chlorinated, or methylated compound.
  • It remains unclear whether the O-H features belong to the main sample, residual water, or a hydroxylated surface/impurity.
  • The 1560 cm-1 band is insufficiently resolved to distinguish among aromatic, carboxylate, amide, or other possibilities.
  • The 724 cm-1 feature is too nonspecific to confirm C-Br, C-Cl, long-chain rocking, or ring substitution patterns without additional corroborating bands.
  • Because the spectrum is sparse and the library evidence is weak, the safest conclusion is a broad oxygen-containing material direction with possible methyl and halogen-related features.
Recommendation

Suggested next verification

  • Recollect the FTIR spectrum after careful background subtraction and drying control to determine whether the high-wavenumber O-H bands arise from moisture contamination.
  • Inspect the carbonyl region at higher signal quality to determine whether the 1726 cm-1 band is accompanied by C-O bands expected for esters, acids, or other oxygenated compounds.
  • Check specifically for corroborating halogen-associated fingerprint bands before inferring brominated or chlorinated content.
  • If available, run complementary measurements such as Raman, GC-MS, or elemental analysis for halogen confirmation and to clarify whether the sample is a simple oxygenated organic material or a mixed surface-contaminated sample.
Peak analysis

Detected peaks and interpretation

★ = Literature-supported peak assignment.

Index Characteristic Wavenumber Absorbance Evidence One-line interpretation Citation Confidence
1 · 3736 1.00 - - - -
2 · 1560 0.73 - - - -
3 · 2371 0.58 - - - -
4 · 3843 0.49 - - - -
5 · 3616 0.38 - - - -
6 · 1726 0.36 - - - -
7 · 724 0.21 - - - -
Appendix

Sample information and raw spectrum

Original uploaded spectrum for reference and verification.

Baseline correction method: Asymmetric Least Squares Smoothing

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

Raw spectrum without baseline correction or other processing:

Sample spectrum image
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  • 2 Apr '25

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