Chemical Science and Technology Laboratory
Methods in Selecting Best Values
Multiple-point property values through
• Weighted-average-value method (WAV)
• Estimated uncertainty
• Publication year
• Sample  purity
• Experimental objective
One- or two-point property value through
• Measurement-related factors (sample purity, methods, instruments control)
• Characters of the compound (stability, temperature)
• Similar structures
• Critically reviewed and newly developed models
• Reliable data sources