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    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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    Property Descriptions
    1H NMR
    Units: ppm, relative to TMS
    13C NMR
    Units: ppm, relative to TMS
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    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
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    Units: °C
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    Magnetic Susceptibility
    Units: 10-6 cm3 mol-1
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    Melting Point
    Units: °C
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    Molecular Formula by Element
    Molecular Weight
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    Search for a peak value or range in cm-1
    Refractive Index
    Values at 589 nm
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    Units: ppm. Short-term Exposure Limit.
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    Units: ppm. Time-weighted Average.
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    Search for a peak value or range in nm. Results show peaks (in nm) and molar absorption coefficients (in L mol-1 cm-1)
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