FTIR ANALYSIS REPORT

FTIR Spectrum Analysis Report

No.: 20250529151949300480701 Date: 2025-05-29 20:21:12 Reported by: FTIR.fun Contact: [email protected]

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Top15

Similarity-ranked Top-15 library comparison

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Library spectrum will appear here.

Infrared spectrum comparison chart. Analysis result: oxygenated aliphatic ether material with methyl-substituted polyether character.

The nearest library name is Poly(ethylene glycol methyl ether), but the match quality is very weak and cannot support a firm compound-level assignment. The observed FTIR pattern is more safely described as an oxygenated aliphatic ether material with methyl-substituted polyether character, based on a strong C-O-rich fingerprint region and mainly aliphatic C-H features. A narrow assignment to Poly(ethylene glycol methyl ether) is limited by the absence of stronger corroborating reference evidence and by the presence of a 1728 cm-1 band, which suggests an additional carbonyl-containing component or modification not explained by a simple polyether alone

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 with methyl-substituted polyether character

General assessment

#74696 Initial rank 1 Current rank 1 Library lead match 0.0%

Conclusion

Top library candidates repeatedly feature oxygen-containing aliphatic ethers and polyether-type structures.
The 1093 cm-1 band is characteristic of strong C-O stretching in ether-containing materials.
The 1247 cm-1 band is compatible with alkyl ether C-O-C vibrations.

Main limitation

All listed library similarities are effectively zero, so the retrieval does not provide strong discriminating support for a specific named material.

Evidence

Key evidence

لائبریری معروف مماثلت

Poly(ethylene glycol methyl ether) #74696 | match 0.0%

مواد کی سمت

oxygenated aliphatic ether material with methyl-substituted polyether character The nearest library name is Poly(ethylene glycol methyl ether), but the match quality is very weak and cannot support a firm compound-level assignment. The observed FTIR pattern is more safely described as an oxygenated aliphatic ether material with methyl-substituted polyether character, based on a strong C-O-rich fingerprint region and mainly aliphatic C-H features. A narrow assignment to Poly(ethylene glycol methyl ether) is limited by the absence of stronger corroborating reference evidence and by the presence of a 1728 cm-1 band, which suggests an additional carbonyl-containing component or modification not explained by a simple polyether alone.

Support

Evidence supporting the conclusion

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

The nearest library name is Poly(ethylene glycol methyl ether), but the match quality is very weak and cannot support a firm compound-level assignment. The observed FTIR pattern is more safely described as an oxygenated aliphatic ether material with methyl-substituted polyether character, based on a strong C-O-rich fingerprint region and mainly aliphatic C-H features. A narrow assignment to Poly(ethylene glycol methyl ether) is limited by the absence of stronger corroborating reference evidence and by the presence of a 1728 cm-1 band, which suggests an additional carbonyl-containing component or modification not explained by a simple polyether alone.
Top library candidates repeatedly feature oxygen-containing aliphatic ethers and polyether-type structures.
The 1093 cm-1 band is characteristic of strong C-O stretching in ether-containing materials.
The 1247 cm-1 band is compatible with alkyl ether C-O-C vibrations.
The 2867 and 1450 cm-1 bands are consistent with aliphatic methyl/methylene groups, fitting an alkoxy or polyether-like material.
Lower-frequency bands at 947 and 848 cm-1 are compatible with ether-containing aliphatic frameworks, although not uniquely identifying.
The spectrum shows bands at 1093 and 1247 cm-1 that are consistent with C-O and C-O-C stretching in ether-rich materials.
Bands at 2867 and 1450 cm-1 support predominantly aliphatic hydrocarbon content, including methyl or methylene groups.
The Top-15 library pattern is dominated by polyether-like and alkoxy compounds, including Poly(ethylene glycol methyl ether), Poly(ethylene oxide), and several methoxyethoxy/ethoxyethoxy materials, which collectively support an oxygenated ether-rich direction.
The 1728 cm-1 band indicates a carbonyl feature that is not a defining expectation for a simple polyethylene glycol methyl ether material and therefore limits a direct entity conclusion.

Limitations

Evidence that limits the conclusion

All listed library similarities are effectively zero, so the retrieval does not provide strong discriminating support for a specific named material.
The 1728 cm-1 carbonyl band is a limiting feature for assigning the sample as simple Poly(ethylene glycol methyl ether) without qualification.
It remains unclear whether the carbonyl band at 1728 cm-1 belongs to the main material, an end group, an oxidized fraction, an ester-containing additive, or a mixture component.
The present evidence supports a broad oxygenated ether/polyether direction more strongly than a single discrete library entity.
Without stronger matching bands or corroborating references, the chain length, end-group identity, and sample purity cannot be established from this FTIR result alone.

Recommendation

Suggested next verification

Re-examine the sample for the presence and intensity of a broad O-H band in the 3200-3600 cm-1 region to distinguish hydroxyl-terminated polyether material from a fully etherified analogue.
Check for additional carbonyl-associated bands near 1170-1300 cm-1 and 1735-1750 cm-1 to determine whether an ester-containing additive or oxidation product is present.
Compare against authenticated FTIR references for Poly(ethylene glycol methyl ether), Poly(ethylene oxide), and common esterified polyether materials under the same sampling conditions.
Use complementary GC-MS or LC-MS for lower-molecular-weight material, or NMR if feasible, to verify whether the sample is a single methyl-terminated polyether or a carbonyl-containing mixture.

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:

oxygenated aliphatic ether material with methyl-substituted polyether character

FTIR Spectrum Analysis Report

Similarity-ranked Top-15 library comparison

Reference library candidates

oxygenated aliphatic ether material with methyl-substituted polyether character

Key evidence

Evidence supporting the conclusion

Evidence that limits the conclusion

Suggested next verification

Detected peaks and interpretation

Sample information and raw spectrum

تبصرے اور فالو اپ ثبوت

آن لائن سپورٹ

oxygenated aliphatic ether material with methyl-substituted polyether character

Similarity-ranked Top-15 library comparison

Reference library candidates

oxygenated aliphatic ether material with methyl-substituted polyether character

Key evidence

Evidence supporting the conclusion

Evidence that limits the conclusion

Suggested next verification

Detected peaks and interpretation

Sample information and raw spectrum

تبصرے اور فالو اپ ثبوت

اس زمرے میں دیگر تجزیے

آن لائن سپورٹ

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