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HALAMAN KEPUTUSAN

siloxane- or polysiloxane-containing material

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No. Keputusan: 20250514131248378854967 Pemilik: publicuser Komen: 0
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FTIR ANALYSIS REPORT

FTIR Spectrum Analysis Report

No.: 20250514131248378854967 Date: 2025-05-14 11:13:52 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

siloxane- or polysiloxane-containing material

General assessment
-
#73018 Initial rank 1 Current rank 1
Conclusion
  1. Top-15 retrieval contains multiple silicone/siloxane entries rather than a single isolated siloxane hit.
  2. 1014 cm-1 is characteristic of a siloxane-type backbone region.
  3. 1259 cm-1 is characteristic of methyl-substituted silicon environments in many silicones.
Evidence & interpretation
Evidence

Key evidence

Padanan utama perpustakaan
dimethyl-bis(trimethylsilyloxy)silane #73018
Limitations

Evidence that limits the conclusion

  • All listed library similarities are effectively zero, S-O the top library name is not strongly supported as an exact identification.
  • The Top-15 set is chemically mixed and also includes halogenated aromatics and non-siloxane compounds, showing weak overall retrieval specificity.
  • Broad absorption at 3359–3372 cm-1 suggests O–H, adsorbed moisture, or another hydrogen-bonding contribution that is not explained by the narrow top candidate alone.
  • No direct literature match or reference interpretation independently confirms dimethyl-bis(trimethylsilyloxy)silane.
  • The current evidence supports a broad organosilicon/siloxane direction, but not a unique molecular identity.
  • It remains unclear whether the sample is a small siloxane fluid, a silicone oil, a PDMS-like polymer, or a polysiloxane mixture.
  • The origin of the broad 3359–3372 cm-1 feature is unresolved from the present evidence and could reflect moisture, surface contamination, or a secondary component.
Recommendation

Suggested next verification

  • Re-run FTIR with improved background subtraction and a dry, clean sampling surface to test whether the 3359–3372 cm-1 band decreases, which would help distinguish moisture from intrinsic chemistry.
  • Inspect the 1000–1100 cm-1 and 780–850 cm-1 regions at higher signal quality; stronger confirmation of the Si–O–Si and Si–CH3 pattern would support a silicone assignment.
  • Compare the sample specifically against reference spectra for PDMS fluids, trimethylsiloxy-terminated siloxanes, and polysiloxane mixtures rather than relying on a broad general library search.
  • If identification matters beyond class level, verify by GC-MS for volatile siloxanes or by pyrolysis-GC-MS / Si-elemental analysis for polymeric silicone material.
Peak analysis

Detected peaks and interpretation

★ = Literature-supported peak assignment.

Index Characteristic Wavenumber Absorbance Evidence One-line interpretation Citation Confidence
1 · 1014 1.00 - - - -
2 · 797 0.92 - - - -
3 · 1412 0.91 - - - -
4 · 1259 0.84 - - - -
5 · 872 0.51 - - - -
6 · 713 0.25 - - - -
7 · 2964 0.22 - - - -
8 · 3359 0.12 - - - -
9 · 3372 0.12 - - - -
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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