TP3Excerpts from 49 CFR §172.102. Verify against the current official rule text before relying on them.
Provision text
The maximum degree of filling (in %) for solids transported above their melting points and for elevated temperature liquids shall be determined by the following:

Where: df and dr are the mean densities of the liquid at the mean temperature of the liquid during filling and the maximum mean bulk temperature during transport respectively.

Where: df and dr are the mean densities of the liquid at the mean temperature of the liquid during filling and the maximum mean bulk temperature during transport respectively.