| Material category | Approx. spectra | Proportion | Representative examples |
|---|---|---|---|
| Polymers / plastics Named polymers, plastics and copolymers. | 4,871 | 1.5% |
|
| Rubbers / elastomers Rubber, latex and elastomer materials. | 278 | 0.09% |
|
| Resins / coatings / adhesives Resins, paints, coatings, binders and adhesives. | 3,219 | 0.99% |
|
| Oils / lubricants / waxes Oils, fats, lubricants, greases and waxes. | 2,049 | 0.63% |
|
| Surfactants / personal-care materials Surfactants, detergents, soaps and personal-care raw materials. | 452 | 0.14% |
|
| Pharmaceuticals / medical materials Drugs, pharmaceutical preparations and explicit medical materials. | 727 | 0.22% |
|
| Sugars / carbohydrates / polysaccharides Sugars, starches, cellulose and other carbohydrate-rich materials. | 1,262 | 0.39% |
|
| Proteins / biomaterials Proteins, peptides, collagen, gelatin and named biomaterials. | 406 | 0.13% |
|
| Microorganisms Microbial cells, cultures, fungi, algae and named microorganisms. | 4,864 | 1.5% |
|
| Fibers / paper / textiles Fibers, textiles, paper, pulp and related plant-derived materials. | 910 | 0.28% |
|
| Inorganic / minerals / ceramics / glass Inorganic compounds, minerals, ceramics, glass and carbonaceous minerals. | 16,526 | 5.1% |
|
| Pigments / dyes Colorants, pigments and named dye families. | 366 | 0.11% |
|
| Solvents / small organic molecules Explicit solvents and common small organic chemical families. | 16,276 | 5.0% |
|
| Chemical additives / processing aids Plasticizers, stabilizers, antioxidants, catalysts and processing additives. | 537 | 0.17% |
|
| Food / agriculture / natural products Food, agricultural materials, plant products, natural extracts and named natural compounds. | 174,850 | 54.0% |
|
| Organic chemicals / intermediates Broad estimate for named organic molecules and chemical intermediates not covered above. | 94,561 | 29.2% |
|
| Other / unclassified Records without a usable broad material signal after reviewing the available names. | 1,542 | 0.48% |
|
The total number of spectra is exact for this snapshot. The category counts are approximate because broad material assignment is estimated from names and metadata.
Source type and license status are listed independently from material category. Licensing is stated only where the source catalog provides supporting information.
Open Soil Spectral Library (OSSL), PMIRD, microbial FTIR collections, Purghagoolah charcoal spectra, intervertebral-disc FTIR data and other dataset-specific ingests recorded in the project catalog.
Historical base collection and instrument-imported records curated within FTIR.fun.
Spectra extracted from infrared spectrum images in publicly available patent documents, open-access full-text scientific literature, and similar public scientific sources.
Named records include Open Soil Spectral Library (OSSL), PMIRD, oral-bacteria FTIR, Antarctic green-snow FTIR, Gram ATR/NIR, Purghagoolah charcoal spectra, Soil NPK, intervertebral-disc FTIR, ULiège adhesive and resin-beeswax datasets, ICRAF/AfSIS soil MIR, and Strathclyde serum 2D-IR data.
Project catalog confirms this license for the Chemotion IR and MicroPlastiX SpecDB pool.
