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    • NIST Reference Fluid Thermodynamic and Transport Properties Database (REFPROP) Version 9 - SRD 23

    Metadata Updated: September 30, 2025

    **NOTICE: THIS VERSION OF REFPROP (9.1) has been superseded by Version 10: https://doi.org/10.18434/T4/1502528 ** NIST Standard Reference Data 23 contains revised data in a Windows version of the database, including 105 pure fluids and allowing mixtures of up to 20 components. The fluids include the environmentally acceptable HFCs, traditional HFCs and CFCs and 'natural' refrigerants like ammonia. Version9.1 REFPROP 9.1 has replaced the NIST 12 and 14 databases. Source code: The FORTRAN subroutines and associated fluid data files are provided for those wishing to access REFPROP calculations from their own applications; Excel spreadsheets: A sample spreadsheet is included that demonstrates how the REFPROP DLL can be linked to Excel. Most properties that are available in the graphical interface can also be calculated in the spreadsheet. System Requirements: PC running Windows 98, 2000, XP, Vista, Window 7 or similar operating system; 10.0 MB available hard disk space.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: See this page for license information.

    Downloads & Resources

    Dates

    Metadata Created Date November 12, 2020
    Metadata Updated Date September 30, 2025
    Data Update Frequency irregular

    Metadata Source

    Harvested from Commerce Non Spatial Data.json Harvest Source

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date November 12, 2020
    Metadata Updated Date September 30, 2025
    Publisher National Institute of Standards and Technology
    Maintainer
    Identifier ECBCC1C130222ED9E04306570681B10740
    Language en
    Data Last Modified 2013-04-01 00:00:00
    Rights This is a paid resource. Pricing depends on number of copies purchased and whether or not this is an upgrade. Links to order forms can be found on the site: https://www.nist.gov/srd/refprop.
    Category Standards:Reference data
    Public Access Level public
    Data Update Frequency irregular
    Bureau Code 006:55
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id fc24e44e-0743-4fb4-b379-6ddb8566b64a
    Harvest Source Id bce99b55-29c1-47be-b214-b8e71e9180b1
    Harvest Source Title Commerce Non Spatial Data.json Harvest Source
    Homepage URL https://data.nist.gov/od/id/ECBCC1C130222ED9E04306570681B10740
    License https://www.nist.gov/open/license
    Program Code 006:052
    Source Datajson Identifier True
    Source Hash d5a75c0d7f4bf6ed32f5534e28054266d731705b5b9d6fc99e64e91e6d7a6635
    Source Schema Version 1.1

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