How can you identify CaCO3 from FTIR?
This page summarizes the recurring FTIR evidence reported for CaCO3, 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
CaCO3 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 |
|---|---|
| Carbonate | 10 |
| C-O single bond | 8 |
| Silicon-oxygen (Si-O) | 7 |
| Methoxy (OCH3) | 7 |
| Methacrylate | 7 |
| Acetate | 7 |
| Amide | 4 |
| Water (H2O) | 3 |
Spectrum logic
The logic here is evidence aggregation: repeated literature mentions of CaCO3, 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
-
confidence 4.8
CaCO3
Chong 等 - 2014 - Polymorphs Calcium Carbonate on Temperature Reacti DOI: 10.1063/1.4895169 -
confidence 4.8
CaCO3
Shape, Microstructure, and Chemical Composition of Pearls from the Freshwater Clam Diplodon chilensis Native to South America DOI: 10.3390/ani13132231 -
confidence 4.8
CaCO3
Habte 等 - 2019 - Synthesis of Nano-Calcium Oxide from Waste Eggshel DOI: 10.3390/su11113196 -
confidence 3.6
CaCO3
Characterization of the CaCO3 biomineral in coralline red algae (Corallinales) from the Pacific coast of Mexico DOI: 10.7773/cm.v36i1.1606 -
confidence 3.6
CaCO3
Application of Fourier Transform infrared spectroscopy (FTIR) coupled with multivariate regression for calcium carbonate (CaCO3) quantification in cement DOI: 10.1016/j.conbuildmat.2021.125413 -
confidence 2.8
CaCO3
The effectiveness of oyster filler on the physical and mechanical properties of novel dental restorative composite DOI: 10.1063/5.0031467 -
confidence 0.9
CaCO3
The Taste of Waste: The Edge of Eggshell Over Calcium Carbonate in Acrylonitrile Butadiene Rubber DOI: 10.1007/s10924-019-01530-y -
confidence 0.8
CaCO3
Synthesis of CaCO 3 using CO 2 at room temperature and ambient pressure DOI: 10.1016/j.matlet.2016.12.030 -
confidence 0.8
CaCO3
Kong 等 - 2019 - Synthesis of CaCO3-SiO2 composite using CO2 for fi DOI: 10.1016/j.matlet.2018.12.033 -
confidence 0.6
CaCO3
Andriulo 等 - 2016 - Nanotechnologies for the restoration of alum-treat DOI: 10.1007/s00339-016-9833-0
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