Spectral databases are organized digital repositories of chemical, physical, and molecular data, primarily used by chemists and researchers to identify unknown substances by comparing them against a known library of spectra. They contain various types of data—such as NMR, IR, and mass spectra—essential for analyzing material structure and composition. Key aspects and types of spectral databases include:
Core Types of Spectral Data: These databases include data from techniques like Infrared (IR), Nuclear Magnetic Resonance (NMR), and Mass Spectrometry (MS/MS). Key Public Databases:
SDBS (Spectral Database for Organic Compounds): Produced by the National Institute of Advanced Industrial Science and Technology of Japan, it offers six types of spectra, including EI mass, 1H/13C NMR, FT-IR, Raman, and ESR.
NIST Chemistry WebBook: Provided by the National Institute of Standards and Technology, it provides chemical and physical property data, including IR, mass, and UV/vis spectra.
Search Capabilities: Databases allow searching for compounds via chemical name, molecular formula, or CAS registry number.
Application: Researchers use these to analyze unknowns—for instance, in FTIR analysis to identify compounds like polymers.
Commercial vs. Public: In addition to free resources like NIST, specialized subsets of databases can be purchased for specific industries, such as forensics or polymer analysis. Chemistry Databases: Spectra & Spectral Data – Library
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