Hydrocarbons - Melting Point vs. Molecular Weight
Calculate melting points of pure hydrocarbons (n-alkanes, alkycyclopentanes, alkycyclohexanes, and alkybenzenes) based on molecular weight using Riazi and Sahhaf equations. Supports carbon ranges C5-C42 depending on hydrocarbon type with typical accuracy of 1-1.5%.
Hydrocarbon Melting Point Calculator
This calculator uses the Riazi and Sahhaf equations to estimate melting points for different hydrocarbon groups:
- n-Alkanes (Paraffins): Carbon range C5-C40
- n-Alkycyclopentanes (Naphthenes): Carbon range C7-C41
- n-Alkycyclohexanes (Naphthenes): Carbon range C7-C20
- n-Alkybenzenes (Aromatics): Carbon range C9-C42
Equations:
- TM (n-alkanes) = 397 - exp(6.5096 - 0.14187·M^(2/3))
- TMCP (cyclopentanes) = 370 - exp(6.52504 - 0.04945·M^(2/3))
- TMCH (cyclohexanes) = 360 - exp(6.55942 - 0.04681·M^(2/3))
- TMA (aromatics) = 356 - exp(6.62282 - 0.10019·M^(2/3))
where M is molecular weight in g/mol and TM is melting point in Kelvin (K)