Compound Information 

Name: orthophosphoric acid
Formula: H3O4P
Molar Mass: 97.993762
Additional Names: phosphoric acid
Image of orthophosphoric acid

Please be patient while the web interface loads...

Property Availability 

For this compound, WTT contains critically evaluated recommendations for:

  • Density (Liquid in equilibrium with Gas) as a function of Temperature
    Temperature from 293.089 K to 442.961 K
    14 experimental data points

    About WTT 

    NIST/TRC Web Thermo Tables (WTT)
    NIST Standard Reference Subscription Database 3 - Professional Edition
    Version 2-2012-1-Pro

    This web application provides access to a collection of critically evaluated thermodynamic property data for pure compounds with a primary focus on organics. These data were generated through dynamic data analysis, as implemented in the NIST ThermoData Engine software package [1, 2, 3, 4, 5, 6]. Some critically evaluated data from the historical TRC Thermodynamic Tables archive [7, 8] are included, also. As of May 2012, the Professional Edition contains information on 28432 compounds and total of 531486 evaluated data points. The properties covered by both versions (32 total) are described in Properties and Implemented Models.

    Developed by Kenneth Kroenlein, Chris D. Muzny, Andrei F. Kazakov, Vladimir Diky, Robert D. Chirico, Joseph W. Magee, Ilmutdin Abdulagatov and Michael Frenkel.

    Thermodynamics Research Center (TRC)
    Thermophysical Properties Division
    National Institute of Standards and Technology
    Boulder CO 80305-3337

    Questions and comments should be addressed to Dr. Michael Frenkel .

    DISCLAIMER: The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high-quality copy of the database and to verify that the methods and data contained therein have been selected on the basis of sound scientific judgement. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the program and database.

    Distributed by:
    Standard Reference Data Program
    National Institute of Standards and Technology
    Gaithersburg MD 20899

    Compound Information
    Property Availability
    About this site
    NIST Chemistry WebBook