What absorbs at 1710 cm⁻¹ in an FTIR spectrum?
A band near 1710 cm⁻¹ can point to several functional groups. Below are the most likely assignments, ranked by how much published evidence supports each — every one traceable to literature (DOI) and cross-validated against our 130,000+ reference spectra and knowledge graph.
Backed by 8 cited sources
Quick answer
A band near 1710 cm⁻¹ is usually interpreted by checking which functional groups repeatedly co-occur there in the literature, then confirming at least one or two additional peaks in the same sample. This page ranks those assignments by accumulated evidence rather than by a single fixed textbook rule.
Possible functional-group assignments
| Functional group | Supporting facts | Cited sources | Top confidence |
|---|---|---|---|
| Carbonyl (C=O) | 63 | 53 | 1.0 |
| Carboxyl (COOH) | 55 | 45 | 1.0 |
| Methacrylate | 33 | 27 | 1.0 |
| Acetate | 33 | 27 | 1.0 |
| Ester | 30 | 24 | 1.0 |
| Amide | 28 | 23 | 1.0 |
| Ketone | 26 | 21 | 1.0 |
| Methoxy (OCH3) | 13 | 12 | 1.0 |
| C-O single bond | 13 | 12 | 1.0 |
| Hydroxyl (O-H) | 6 | 6 | 1.0 |
| Alkyl C-H | 5 | 5 | 1.0 |
| N h | 4 | 4 | 1.0 |
| Aromatic ring | 4 | 2 | 1.0 |
| Fatty acid | 3 | 3 | 1.0 |
| Alkene (C=C) | 3 | 3 | 1.0 |
| Hydrogen bond | 3 | 3 | 1.0 |
| Ring structure | 3 | 2 | 1.0 |
| N-O bond | 3 | 2 | 1.0 |
| C c single bond | 2 | 2 | 1.0 |
| Urethane | 2 | 2 | 1.0 |
| Imide | 1 | 1 | 1.0 |
| Nucleic acid | 1 | 1 | 1.0 |
| Protein beta sheet | 1 | 1 | 1.0 |
| Amino acid | 1 | 1 | 1.0 |
| Triglyceride | 1 | 1 | 1.0 |
| Ammonium | 1 | 1 | 1.0 |
| Carbohydrate | 1 | 1 | 1.0 |
| Sulfonate | 1 | 1 | 1.0 |
| Thiol | 1 | 1 | 1.0 |
| Water (H2O) | 1 | 1 | 1.0 |
| Urea | 1 | 1 | 1.0 |
| Anhydride | 1 | 1 | 1.0 |
| Lipid | 1 | 0 | 1.0 |
Ranking reflects accumulated literature evidence, not a single fixed rule. Always confirm against your sample context.
Possible materials
| Material | Supporting peaks | Overlapping groups | Cited sources |
|---|---|---|---|
| alginate | 1710, 1100, 1715 | Methacrylate, Acetate, Carboxyl (COOH) | 1 |
| polystyrene | 1710, 1020, 1600 | Methacrylate, Acetate, Carbonyl (C=O) | 1 |
Materials are shown only when the same literature pool supports this band and at least one additional characteristic peak.
Spectrum logic
This band becomes meaningful only when read with its neighboring peaks. In practice, analysts first look at the assignments above, then check whether the same sample also shows other peaks expected for the same structural motif. A lone band near 1710 cm⁻¹ is usually not enough for material identification by itself.
Real-world usage
This type of query is common in polymer identification, unknown plastic screening, QC troubleshooting, recycled-material verification, and literature-backed peak assignment review.
Common mistakes
- Treating one isolated band as proof of a material without checking at least one or two supporting peaks.
- Ignoring overlap: multiple functional groups can contribute near the same wavenumber.
- Skipping validation when additives, blends, oxidation, or contamination may distort the spectrum.
Verification advice
When ambiguity remains, validate the hypothesis with DSC, GC-MS, or TGA, especially for blends, degraded samples, and filled polymers.
Literature behind these assignments
-
confidence 1.0
“Thus, in ATMC the very strong bandobservedininfraredat1710cm-1 attributed to the amino wagging mode.”
Arjunan 等 - 2007 - Fourier transform infrared and Raman spectral assi DOI: 10.1016/j.saa.2006.09.044 -
Anhydride confidence 1.0
“and at 1009 However, that of NR/PS-g-MA (with polystyrene, 6/4) peaks of maleic anhydride at 1710 showed only low intensity of the absorption peak.”
Efficiency of maleic anhydride-modified polystyrene/natural rubber blends as sand aggregate binder DOI: 10.1063/5.0015717 -
Acetate confidence 1.0
“New peaks appeared at 1616 and 1710 344 1 cm-1) that related to C=C stretching of newly formed polyaromatic, and, C=O stretching (1710 345”
Balan 等 - 2021 - Esterification of residual palm oil using solid ac DOI: 10.1016/j.jtice.2012.07.001. -
N-O bond confidence 1.0
“There was no peak at 1710 increasing level of TA addition.”
Byaruhanga 等 - 2006 - Alteration of kafirin and kafirin film structure b DOI: 10.1021/jf052942z -
Ring structure confidence 1.0
“which the D-ring does not participate in H-bonding, while the of the D-ring carbonyl 1710cm-1 peakisassignedtostructureswithH-bondedD-ringcarbonyls.Theabilitytoresolvethesetwosub-populationsofstructures The D-ring moiety is possibly the mos”
Chenchiliyan 等 - 2023 - Ground-state heterogeneity and vibrational energy DOI: 10.1063/5.0135268 -
Carboxyl (COOH) confidence 1.0
“The peak at 1710 was standard[24] according to the ASTM from the data attributed to the C = O stretching vibrations in the of three-point bend test at 1 month storage time by cm-1 carboxylic group and the peak at 1628 was drawing a tangent”
Fareed 和 Stamboulis - 2014 - Nanoclay addition to a conventional glass ionomer DOI: 10.4103/1305-7456.143619 -
Carboxyl (COOH) confidence 1.0
“It founded in Chai and Isa [51] work, where new appearance cm-1 could interact with the oxygen atom of carboxylate anion peak at ~1710 belongs to C=O stretching of GA.”
Enhancing proton conductivity of sodium alginate doped with glycolic acid in bio-based polymer electrolytes system DOI: 10.1007/s10965-020-02142-0 -
Carbonyl (C=O) confidence 1.0
“The peaks at 1710 and 1747 The carbonyl band (overlapping ester and carboxylic acid) can be ascribed cm(cid:3)1.”
Galgali 等 - 2007 - Sugar-linked biodegradable polymers Regio-specifi DOI: 10.1016/j.carbpol.2006.06.035
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