Not all "Accepted" values are experimental; many are predicted or smoothed correlations. Always check the "Data Type" field [25].

Data is checked against thermodynamic relationships (e.g., ensuring vapor pressure and heat of vaporization are consistent) and family trends [18, 25].

The database is more than just a reference sheet; it is a fundamental tool for simulation and safety.

The official recommended value vetted by DIPPR experts.

These are properties that vary along a continuum. DIPPR provides the raw data points and regressed equation coefficients, allowing engineers to calculate properties at any temperature. This includes: