How can you identify NaOH from FTIR?
This page summarizes the recurring FTIR evidence reported for NaOH, 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 11 cited sources
Quick answer
NaOH 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 | 20 |
| Hydroxyl (O-H) | 19 |
| Carbohydrate | 16 |
| Silicon-oxygen (Si-O) | 10 |
| C-O single bond | 8 |
| Methacrylate | 8 |
| Acetate | 8 |
| Amide | 7 |
Spectrum logic
The logic here is evidence aggregation: repeated literature mentions of NaOH, 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 3.6
NaOH
Effect of NaOH and Water Contents on Solidification of Sodium Silicate Free Geopolymer DOI: 10.4028/www.scientific.net/AMM.625.3 -
confidence 3.6
NaOH
Effective Utilization of Copper Slag for the Production of Geopolymer Concrete with Different NaOH Molarity under Ambient Curing Conditions DOI: 10.3390/su142316300 -
confidence 3.6
NaOH
Impact of NaOH Concentration on Deweaving of Cotton Fabric in Aqueous Solutions DOI: 10.3390/su13042015 -
confidence 3.6
NaOH
Influence of NaOH concentration on the decolorization of crystal violet dyed cotton fabric DOI: 10.4491/eer.2021.643 -
confidence 3.6
NaOH
Cellulose Nanocrystals Obtained From Microcrystalline Cellulose by p-toluene Sulfonic Acid Hydrolysis, NaOH and Ethylenediamine Treatment DOI: 10.21203/rs.3.rs-918157/v1 -
confidence 2.8
NaOH
Effect of Alkali Concentration on the Activation of Carbonate-High Illite Clay DOI: 10.3390/app10072203 -
confidence 2.8
NaOH
Enhanced Saccharification of Purple Alfalfa via Sequential Pretreatment with Acidified Ethylene Glycol and Urea/NaOH DOI: 10.3390/pr10010061 -
confidence 2.8
NaOH
Physicochemical Characterization of Quinoa (Chenopodium quinoa cv. Nariño) Co-products Obtained by Wet Milling DOI: 10.3389/fsufs.2022.851433 -
confidence 2.8
NaOH
Fabrication of densified wood via synergy of chemical pretreatment, hot-pressing and post mechanical fixation DOI: 10.1186/s10086-020-1853-x -
confidence 2.8
NaOH
Biological Characterization and Instrumental Analytical Comparison of Two Biorefining Pretreatments for Water Hyacinth (Eichhornia crassipes) Biomass Hydrolysis DOI: 10.3390/su13010245
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