• Top library match: 3-Ethoxyphenol #392

• The leading library hit cannot be treated as a reliable identification because its reported similarity is 0.000 and the remaining top candidates are also at 0.000.
• The spectrum contains a clear carbonyl band at 1728 cm-1, which limits support for assigning the sample specifically as 3-Ethoxyphenol.
• It remains uncertain whether the O-H features arise from an intrinsic hydroxyl-containing compound, adsorbed moisture, inorganic hydroxyls, or a mixture.
• The available evidence does not distinguish confidently between a small oxygenated organic compound, an oxidized additive, or an oxygenated polymeric material.
• The aromatic or unsaturated character is not strong enough here to confirm a phenolic compound specifically.

Recommended next steps: Repeat the FTIR after careful drying or mild heating under vacuum or dry nitrogen to test whether the high-wavenumber O-H features decrease, which would help separate absorbed moisture from intrinsic hydroxyl groups. Inspect the sample with ATR-FTIR and, if possible, compare replicate spots to determine whether the spectrum reflects a homogeneous material or a surface mixture. Use complementary analysis such as GC-MS for volatile or extractable components, or Py-GC-MS if the sample may be polymeric, to determine whether a discrete oxygenated compound or a polymer/additive mixture is present. If distinguishing ester versus phenolic or ether functionality is important, examine the 1800-1500 cm-1 and 1300-1000 cm-1 regions at higher signal quality and compare against targeted reference spectra for oxygenated organics with carbonyl and C-O groups.