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oxygenated aliphatic ether material, plausibly a polyether or glycol-ether-type sample

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结果编号: 20250529142143844802854 所有者: publicuser 评论: 0
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FTIR ANALYSIS REPORT

FTIR Spectrum Analysis Report

No.: 20250529142143844802854 Date: 2025-05-29 19:23:03 Reported by: FTIR.fun Contact: [email protected]

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Top15

Similarity-ranked Top-15 library comparison

Choose matching result groups:
Library spectrum will appear here.
Library spectrum Interactive sample curve Move the pointer to show the vertical guide line.
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

oxygenated aliphatic ether material, plausibly a polyether or glycol-ether-type sample

General assessment
-
#74696 Initial rank 1 Current rank 1 Library lead match 0.0%
Conclusion
  1. 1093 cm-1 is characteristic of strong C-O stretching expected for ethers and polyether segments.
  2. 1247 cm-1 further supports oxygenated single-bonded carbon environments such as alkyl ether linkages.
  3. 2867 and 1450 cm-1 are consistent with aliphatic CH-containing chains rather than aromatic-rich chemistry.
Main limitation

All reported library similarities are 0.000, so the nearest library name should not be treated as a reliable exact match.

Evidence & interpretation
Evidence

Key evidence

库主匹配
Poly(ethylene glycol methyl ether) #74696 | match 0.0%
材料方向
oxygenated aliphatic ether material, plausibly a polyether or glycol-ether-type sample The spectrum is most consistent with an oxygen-containing aliphatic organic material dominated by ether-type bonding, with the library nearest hit being Poly(ethylene glycol methyl ether). However, the retrieval confidence is effectively absent, and the observed bands do not securely establish that specific polymer. The most supportable conclusion is therefore a broader oxygenated aliphatic ether or polyether/glycol-ether direction rather than a firm compound-level assignment.
Support

Evidence supporting the conclusion

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

  1. The spectrum is most consistent with an oxygen-containing aliphatic organic material dominated by ether-type bonding, with the library nearest hit being Poly(ethylene glycol methyl ether). However, the retrieval confidence is effectively absent, and the observed bands do not securely establish that specific polymer. The most supportable conclusion is therefore a broader oxygenated aliphatic ether or polyether/glycol-ether direction rather than a firm compound-level assignment.
  2. 1093 cm-1 is characteristic of strong C-O stretching expected for ethers and polyether segments.
  3. 1247 cm-1 further supports oxygenated single-bonded carbon environments such as alkyl ether linkages.
  4. 2867 and 1450 cm-1 are consistent with aliphatic CH-containing chains rather than aromatic-rich chemistry.
  5. The leading library candidates repeatedly feature methoxy-, ethoxy-, and polyether-type structures, indicating a consistent oxygenated aliphatic ether pattern across the Top-15 results.
  6. The observed strong mid-IR pattern includes bands at 1093 and 1247 cm-1, which are consistent with C-O and C-O-C stretching in ethers or polyether-like materials.
  7. Bands at 2867 and 1450 cm-1 support aliphatic C-H stretching and bending, indicating a largely saturated hydrocarbon framework bearing oxygenated functionality.
  8. The top library pattern is dominated by oxygen-rich aliphatic ethers, including Poly(ethylene glycol methyl ether), Poly(ethylene oxide), and several methoxyethoxy or ethoxyethoxy compounds, so the common retrieval theme is an aliphatic ether/polyether chemistry.
  9. A band at 1728 cm-1 indicates a carbonyl-containing component or additive, which is not a defining feature of simple poly(ethylene glycol methyl ether) itself and therefore limits confidence in that narrow identification.
Limitations

Evidence that limits the conclusion

  • All reported library similarities are 0.000, so the nearest library name should not be treated as a reliable exact match.
  • The 1728 cm-1 carbonyl band is not well explained by a simple poly(ethylene glycol methyl ether) assignment and may indicate an ester, oxidation product, additive, or mixture component.
  • Peaks at 848 and 947 cm-1 are not by themselves specific enough to confirm the top candidate structure.
  • The sample may be a pure polyether/glycol ether, a functionalized polyether, or a mixture containing an oxygenated aliphatic ether component plus a carbonyl-containing component.
  • Because direct literature support is unavailable, the current result cannot securely distinguish between Poly(ethylene glycol methyl ether), related polyethylene oxide/glycol ethers, or another oxygenated aliphatic material with similar C-O bands.
  • The present evidence does not establish molecular weight, end-group identity, or whether the sample is polymeric versus a lower-mass glycol ether.
Recommendation

Suggested next verification

  • Reacquire the FTIR spectrum with improved signal quality and confirm whether the 1728 cm-1 band is reproducible and intrinsic to the sample.
  • Inspect the 1000-1150 cm-1 region at higher quality, since the shape and multiplicity there can help separate simple glycol ethers from polyethylene oxide/polyethylene glycol-type polymers.
  • Check for complementary evidence by GC-MS or LC-MS if the material may be a small glycol ether, or by NMR/GPC if a polyether polymer is suspected.
  • If the sample is a formulated product, evaluate whether the carbonyl band could arise from an ester-containing additive, plasticizer, or oxidation impurity rather than the main matrix.
Peak analysis

Detected peaks and interpretation

★ = Literature-supported peak assignment.

Index Characteristic Wavenumber Absorbance Evidence One-line interpretation Citation Confidence
1 · 1093 1.00 - - - -
2 · 1728 0.38 - - - -
3 · 947 0.35 - - - -
4 · 848 0.31 - - - -
5 · 1247 0.28 - - - -
6 · 2867 0.27 - - - -
7 · 1348 0.22 - - - -
8 · 1450 0.20 - - - -
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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