What absorbs at 3067 cm⁻¹ in an FTIR spectrum?

Quick answer

A band near 3067 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.

可能性のある官能基アサイン

ランキングは蓄積された文献証拠を反映しており、単一の権威あるルールではありません。常にサンプルのコンテキストと照合して確認してください。

Possible materials

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 3067 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.

これらのアサインの根拠となる文献

• Hydroxyl (O-H) 信頼度 1.0

  “In this system, (3437cm-1), 167 one can see the O-H stretching due to the physisorbed water molecules N-H (3067cm-1),”

  Removal of hazardous pollutants from wastewater: Catalytic applications of Mg nanoparticle functionalized aminoclay DOI: 10.1016/j.molliq.2019.112005
• Alkyl C-H 信頼度 1.0

  “While the FTIR sp2 spectrum of dibenzalcyclohexanone was occurred at 3223.85 (C-H aliphatic stretching), 3066.82 and 3024.38 (aromatic C-H stretching), 2927.94 and 2858.51 (C-H sp3 stretching), 1658.78 (C=O stretching), 1573.91 (aromatic cm”

  Mardiana 等 - 2017 - Ultrasound-Assisted Synthesis of Curcumin Analogs DOI: 10.1063/1.4991200
• Hydroxyl (O-H) 信頼度 1.0

  “LLM confirmed rule peak-group candidate”

  Sureshkumar 等 - 2020 - Continuous Phenol Removal Using a Liquid-Solid Cir DOI: 10.3390/en13153839
• Aromatic ring 信頼度 1.0

  “3, the appearance of new absorption bands: two bands at 3034 copolymers are the materials which swelling is restricted in cm-1 and at 3067 (C Ar-H stretching), at 1728 (C=O”

  Thermal behavior, decomposition mechanism and some physicochemical properties of starch-g-poly(benzyl acrylate) copolymers DOI: 10.1007/s10973-016-5603-7
• Amide 信頼度 1.0

  “3272 stretching vibration and the first overtone 3067 of amide II ([22-26] and references therein) Olefinic C=CH stretching vibration of 3007”

  Application of FTIR Spectroscopy to Detect Changes in Skeletal Muscle Composition Due to Obesity with Insulin Resistance and STZ-Induced Diabetes DOI: 10.3390/ijms232012498