How can you identify ethanol from FTIR?
This page summarizes the recurring FTIR evidence reported for ethanol, including the most frequent peaks, supporting functional groups, and literature-backed interpretation patterns. It is a structured evidence page, not a claim of automatic single-spectrum certainty.
Backed by 16 cited sources
Quick answer
ethanol is usually reported with a recurring pattern of peaks and functional-group evidence. The most useful approach is to cross-check at least two characteristic peaks before treating it as a match, then verify whether the full spectrum still fits the same material family.
Peak interpretation
Possible materials / groups
| Functional group | Evidence |
|---|---|
| Alkyl C-H | 14 |
| Methacrylate | 8 |
| Acetate | 8 |
| C-O single bond | 8 |
| Methoxy (OCH3) | 7 |
| Hydroxyl (O-H) | 6 |
| N h | 4 |
| Water (H2O) | 4 |
Spectrum logic
The logic here is evidence aggregation: repeated literature mentions of ethanol, repeated peak positions, and repeated functional-group associations. A strong material hypothesis should still be supported by multiple peaks that agree with each other, not by one headline band alone.
Real-world usage
This page is designed for polymer identification, incoming-material QC, unknown plastic analysis, recycled-content review, and literature-backed interpretation of reference spectra.
Common mistakes
- Calling a material match too early because one famous peak is present.
- Ignoring sample prep, fillers, oxidation, water, or additives that can change the apparent pattern.
- Using literature evidence without checking whether your own sampling mode and spectrum quality are comparable.
Verification advice
Use DSC, GC-MS, or TGA to validate the material hypothesis when the peak pattern is ambiguous or mixed.
Literature behind this page
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confidence 4.0
ethanol
Alcohol Determination in Distilled Alcoholic Beverages by Liquid Phase Fourier Transform Mid-Infrared and Near-Infrared Spectrophotometries DOI: 10.1007/s12161-016-0566-7 -
confidence 4.0
ethanol
Measurement of entrainer effects of water and ethanol on solubility of caffeine in supercritical carbon dioxide by FT-IR spectroscopy DOI: 10.1016/j.supflu.2005.12.005 -
confidence 4.0
ethanol
Assessment of quality of commercial hand sanitizers using Fourier transform infrared spectroscopy and gas chromatography DOI: 10.1016/j.mex.2023.102274 -
confidence 4.0
ethanol
An in situ FTIR spectroscopic study of the electrochemical oxidation of ethanol at a Pb-modified polycrystalline Pt electrode immersed in aqueous KOH DOI: 10.1039/c3cp53194e -
confidence 4.0
ethanol
Li Yan-Yan 等 - 2013 - Electrooxidation of Ethanol on Platinum Nanocubes DOI: 10.7503/cjcu20120468 -
confidence 2.5
Ethanol
Kinetic and Stoichiometric Modeling-Based Analysis of Docosahexaenoic Acid (DHA) Production Potential by Crypthecodinium cohnii from Glycerol, Glucose and Ethanol DOI: 10.3390/md20020115 -
confidence 2.5
Ethanol
Structural and Vibrational Study of Molecular Interaction in a Ternary Liquid Mixture of Benzylamine, Ethanol and Benzene DOI: 10.21203/rs.3.rs-649250/v1 -
confidence 2.5
ETHANOL
SIMULATION AND DIAGNOSTICS OF PLASMACHEMICAL PROCESSES DURING MICROWAVE PLASMA SYNTHESIS OF GRAPHENE NANOSHEETS FROM ETHANOL DOI: 10.37904/nanocon.2020.3691 -
confidence 2.5
ethanol
Brønsted acidic ionic liquids: the dependence on water of the Fischer esterification of acetic acid and ethanol DOI: 10.1016/j.molcata.2003.09.035 -
confidence 0.9
ethanol
FTIR–ATR spectroscopy applied to quality control of grape-derived spirits DOI: 10.1016/j.foodchem.2016.02.128
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