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.

Infrared spectrum comparison chart. Analysis result: siloxane- or polysiloxane-containing material.

The library’s top named match is dimethyl-bis(trimethylsilyloxy)silane, but the match quality is very weak and not sufficient for a firm compound-level identification. The more defensible interpretation is a siloxane- or polysiloxane-containing material. This broader direction is supported by the repeated appearance of siloxane-type candidates within the Top-15 library results and by sample bands consistent with Si–O–Si / Si–CH3 chemistry, especially near 1014 and 1259 cm-1 together with C–H stretching near 2964 cm-1. However, the observed broad bands at 3359–3372 cm-1 and the low-confidence mixed library pattern limit any specific assignment to the named top hit

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

Top-15 retrieval contains multiple silicone/siloxane entries rather than a single isolated siloxane hit.
1014 cm-1 is characteristic of a siloxane-type backbone region.
1259 cm-1 is characteristic of methyl-substituted silicon environments in many silicones.

Evidence

Key evidence

Kết quả khớp hàng đầu từ thư viện

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:

siloxane- or polysiloxane-containing material

FTIR Spectrum Analysis Report

Similarity-ranked Top-15 library comparison

Reference library candidates

siloxane- or polysiloxane-containing material

Key evidence

Evidence that limits the conclusion

Suggested next verification

Detected peaks and interpretation

Sample information and raw spectrum

Bình luận và bằng chứng tiếp theo

Hỗ trợ trực tuyến

siloxane- or polysiloxane-containing material

Similarity-ranked Top-15 library comparison

Reference library candidates

siloxane- or polysiloxane-containing material

Key evidence

Evidence that limits the conclusion

Suggested next verification

Detected peaks and interpretation

Sample information and raw spectrum

Bình luận và bằng chứng tiếp theo

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