This r eport describes the purifi cation and det erm ina tion of freezin g poin ts and purity of 30 h ydroca rbons of t h e API-Sta nd ard and API-N BS series, includin g eigh t paraffins, s ix cyclopa l'affins, t hree a rom atics, twelve olefin s, a nd one acetylene.

This report describes t he p urification and determination of freezing points a nd purity of 18 hydrocarbon s of t he API-Stand a rd and API-NBS se rics, in cludi ng one paraffin, four a lkylcyclopentan es, nin e alk ylcyclohexanes, two monoolefin s, o ne diolefin, and o ne acety lene.