HELP On Using GDC

Detailed HELP files are available in PDF format for the following topic areas:

NOTE: This list will expand as new HELP files are created.

Comments and suggested topics are welcome. Contact Dr. Rob Chirico: <Chirico@boulder.nist.gov>

NOTE: The GDC software includes textual HELP documentation that will suffice for many users of the program. The HELP files listed here include numerous screen captures from the program and provide more detail.

BASIC INSTALLATION & OPERATION

PDF file nameTopic(s) addressed
DOWNLOADandINSTALL.pdfHow to Download & Install the GDC software
BIBLIOGRAPHICinfo.pdfCapture of title, authors, manuscript number, keywords, etc.
COMPOUNDselection.pdfSelecting a COMPOUND from the GDC integrated database (most common operation)
COMPOUNDaddition.pdfAdding a COMPOUND that is not in the integrated database (a less common operation)
SAMPLEentry.pdfEntering SAMPLE specifications for a given COMPOUND (SAMPLE source, purity, etc.)
MIXTUREspecification.pdfSpecifying a MIXTURE from previously entered COMPOUNDS
PROPERTYselection-1component.pdfHow to select a PROPERTY for a given SAMPLE
PROPERTYselection-mixture.pdfHow to select a PROPERTY for a given MIXTURE
UNCERTAINTYdescriptions.pdfHow to capture UNCERTAINTIES and PRECISIONS (with definitions)
ADVANCED-OPERATION.pdfProcedures for capture of numerous similar data sets

SPECIFIC EXAMPLES OF NUMERICAL DATA CAPTURE:

NOTE: Use of these files presupposes that Bibliographic, Compound, Sample, and (if needed) Mixture-identification info has been captured. See the files in the table above if you need help on these topics.

One-Component Properties

PDF file nameTopic(s) addressed
BOILING-POINT.pdfBOILING TEMPERATURE at 1 atmosphere (101.325 kPa)
CRITICAL-TEMPERATURE.pdfCRITICAL TEMPERATURE (capture of other critical properties is analogous)
DENSITY_vs_T_at_const-p.pdfDENSITY as a function of temperature at constant pressure
DENSITY_vs_TandP.pdfDENSITY as a function of temperature and pressure
DENSITY-at-1-T-and-1-atm.pdfDENSITY at a single temperature and p = 101.325 kPa
ENTHALPY-INCREMENTS_vs_TandP.pdfENTHALPY INCREMENTS as a function of temperature and pressure
HEAT-CAPACITIES-Csat_vs_T.pdfHEAT CAPACITIES at saturation pressure as a function of temperature
HEAT-of-FUSION-or-PHASE-TRANSITION.pdfENTHALPY OF FUSION or ENTHALPY OF PHASE TRANSITION
HEAT-of-VAPORIZATION-1-point.pdfENTHALPY OF VAPORIZATION or sublimation
MELTING-POINT.pdfMELTING TEMPERATURE at p = 101.325 kPa
REFRACTIVE-INDEX-1-point.pdfREFRACTIVE INDEX at one temperature and p = 101.325 kPa
SURFACE-TENSION_vs_T_at_const-p.pdfSURFACE TENSION as function of temperature at constant pressure
ThermalExpansivity_vs_p_at_const-T.pdfTHERMAL EXPANSIVITY as function of pressure at constant temperature
THERMODYNAMIC-FUNCTIONS-from-Csat.pdfENTROPY, ENTHALPY increments, and Csat at smoothed temperatures
TRIPLE-POINT-or-PHASE-TRANSITION-T.pdfTRIPLE POINT TEMPERATURE: Liquid-Crystal or Crystal-Crystal
VAPOR-PRESSURE_vs_T.pdfVAPOR PRESSURE or sublimation pressure as function of temperature
VISCOSITIES_vs_T_at_const-p.pdfVISCOSITIES as a function of temperature at constant pressure

Two & Three Component Properties

PDF file nameTopic(s) addressed
ACTIVITY-COEFF-Inf-Dilution_vs_T-2-comp.pdfACTIVITY COEFFICIENT at INFINITE DILUTION as function of temperature
BINARY-DIFFUSION-COEFF-Inf-Dilution_vs_TandP.pdfBINARY DIFFUSION COEFF at INFINITE DILUTION as function of T and p
CRITICAL-TEMPERATURES_vs_x-2-components.pdfCRITICAL TEMPERATURES as a function of composition
DENSITY_vs_T_p_x-2-components.pdfDENSITIES as a function of temperature, pressure, and composition
DENSITY_vs_x-TandP-const-2-components.pdfDENSITIES as a function of composition with T and p constant
DENSITY-sat_soln_vs_T_at_const-p_3-components.pdfDENSITIES of saturated solution (e.g., crystal in 2-component solvent)
HEAT-CAPACITIES-Cp_vs_T_and_x-2-components.pdfHEAT CAPACITIES Cp as function of temperature and composition
Hex-XS-ENTHALPY_1-2-3_const-TandP.pdfEXCESS ENTHALPY for a mixture of 3 separate components
Hex-XS-ENTHALPY_1_2-3const-TandP.pdfEXCESS ENTHALPY for component 1 added to the binary mixture (2+3)
Hex-XS-ENTHALPY_vs_x-TandP-const-2-components.pdfEXCESS ENTHALPY (i.e., enthalpy of mixing) for a 2-component mixture
INTERFACIAL-TENSION-const-TandP-3-components.pdfINTERFACIAL TENSION at constant temperature and pressure
INTERFACIAL-TENSION_vs_T_and_x-p-const-2-components.pdfINTERFACIAL TENSION at pressure for 2 components
SPEED-of-SOUND_vs_T_and_x-p-const-2-components.pdfSPEED of SOUND as function of T and composition at constant p
SURFACE-TENSION_vs_T_and_x-p-const-2-components.pdfSURFACE TENSION as function of T and composition with p constant
Vex-XS-VOLUME_vs_T_and_x-p-const-2-components.pdfEXCESS VOLUME as a function T and composition at constant p
VISCOSITIES_vs_T_and_x-p-const-2-components.pdfVISCOSITY as function of temperature and composition at constant p

Phase Equilibria & Related Properties

PDF file nameTopic(s) addressed
AZEOTROPIC-composition.pdfAZEOTROPIC COMPOSITION (a derived property)
AZEOTROPIC-pressure.pdfAZEOTROPIC PRESSURE (a derived property)
EUTECTIC-COMPOSITION-2-components.pdfEUTECTIC COMPOSITION for a 2-component mixture at p = 101.325 kPa
EUTECTIC-TEMPERATURE-2-components.pdfEUTECTIC TEMPERATURE for a 2-component mixture at p = 101.325 kPa
HENRY'S-LAW-2-components.pdfDerived HENRY'S LAW constants
LLE-BINODAL-CURVE-3-components.pdfBINODAL CURVE compositions at constant T and p
LLE-CLOUD-POINT-2-components.pdfCLOUD POINT composition as function of T at constant pressure
LLE-SOLUBILITY-conjugate-2-components.pdfMUTUAL SOLUBILITY as function of T at constant p
LLE-TEMPERATURE-2-components.pdfLIQUID-LIQUID EQ temperature as function of composition at constant p
LLE-TIE-LINE-DATA-3-components.pdfLIQUID-LIQUID EQ TIE-LINE data as f(T) with p = constant
LLV-Equilibrium-VAPOR-PRESSURE.pdfLIQUID-LIQUID-VAPOR equilibrium pressures as f(T)
SLE-TEMPERATURE-2-components.pdfSOLID-LIQUID EQUILIBRIUM temperatures as f(x) with constant p
SLLV-QuadruplePoint.pdfSOLI-LIQUID-LIQUID-VAPOR quadruple point temperature
SOLUBILITY-LL_or_SL-2-components.pdfSOLUBILITY of a liquid or crystal in a liquid as f(T) and p constant
SOLUBILITY-Crystal-in-binary-solvent.pdfSOLUBILITY of a crystal in a binary solvent at constant T and p
SOLUBILITY-in-SC-CO2.pdfSOLUBILITY of a crystal in supercritical CO2 as f(T,p)
SOLUBILITY-Gas-in-Liquid_vs_TandP-2-components.pdfSOLUBILITY of a gas in a liquid as f(T,p)
Upper-Consolute-COMPOSITION-2-components.pdfUPPER CONSOLUTE COMPOSITION at p = 101.325 kPa
Upper-Consolute-TEMPERATURE-2-components.pdfUPPER CONSOLUTE TEMPERATURE at p = 101.325 kPa
VLE-DEW_POINT_p_vs_T_and_x-2-components.pdfDEW POINT PRESSURES at function of T and composition
VLE_pTx-BUBBLE-POINT-temp_at-const-p-binary.pdfBUBBLE POINT temperatures as function of composition at p = const
VLE_pTx-VAPOR-PRESSURES_T-const-2-components.pdfVAPOR PRESSURES as function of composition at constant T
VLE_pTxy-DATA_p-const-2-components.pdfPressure-Temperature-Composition-(liquid and vapor) VLE data
VLE_Txy-DATA_p-unspecified-3-components.pdfTemperature-Composition-(liquid and vapor) VLE data with p unspecified

Reaction Properties

PDF file nameTopic(s) addressed
REACTION-Energy-of-Combustion.pdfInternal ENERGY OF COMBUSTION (mass or molar basis)
REACTION-Enthalpy-of-Formation.pdfENTHALPY OF FORMATION of a compound from its constituent elements

Biothermodynamic Properties

PDF file nameTopic(s) addressed
Enzyme-Catalyzed-Reactions.pdfApparent equilibrium constant, enthalpy as f(T, pH, pMg, cofactor, etc.)
Properties-via-Titration-Calorimetry.pdfBinding constants for reactions, reaction enthalpies
Solubilities-in-Complex-Media.pdfSolubilities of biomaterials as f(T, pH, solvent & buffer composition, etc.)
Properties-from-DSC.pdfTransformation properties for a specific substance in a complex solution (e.g. denaturization)