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    Welcome

    CRC Chemical Dictionaries allow you to search an extensive database of chemical compounds by name, physical property, structure and more. This documentation will guide you through getting the most from this Chemical Dictionary, including:

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    Structure Draw
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    Property Descriptions
    1H NMR
    Units: ppm, relative to TMS
    13C NMR
    Units: ppm, relative to TMS
    All Entries
    This field enables you to select all of the entries in the database. If you wish to retrieve all of the entries, type y in the search box.
    Boiling Point
    Units: °C, at 760 mmHg
    CAS Registry Nos.
    CAS number of a compound
    Chemical Name
    CRC Number
    Unique ID for the compound in CRC Chemical Dictionaries.
    Density
    Units: g cm-3, temperature in °C
    Dielectric Constant
    At temperature in °C.
    Dipole Moment
    Units: D
    Enthalpy of Fusion
    Units: kJ mol-1
    Enthalpy of Vaporization
    Units: kJ mol-1, at boiling point
    Flash Point
    Units: °C
    IR Peak
    Search for a peak value or range in cm-1
    Magnetic Susceptibility
    Units: 10-6 cm3 mol-1
    Mass Spectral Peak
    Search for peak value or range. Results show peak values and relative initensities.
    Melting Point
    Units: °C
    Molecular Formula
    Molecular Formula by Element
    Molecular Weight
    Raman Peak
    Search for a peak value or range in cm-1
    Refractive Index
    Values at 589 nm
    Threshold Limit Value (STEL)
    Units: ppm. Short-term Exposure Limit.
    Threshold Limit Value (TWA)
    Units: ppm. Time-weighted Average.
    UV Peaks
    Search for a peak value or range in nm. Results show peaks (in nm) and molar absorption coefficients (in L mol-1 cm-1)
    Vapor Pressure
    Units: kPa, at 25 °C