Saturated hydrocarbons; the percentage of saturated compounds in asphalt correlates with its softening point
sˈætʃɚɹˌeɪɾᵻd hˈaɪdɹəkˌɑːɹbənz; ðə pɚsˈɛntɪdʒ ʌv sˈætʃɚɹˌeɪɾᵻd kˈɑːmpaʊndz ɪn ˈæsfɔlt kˈɔɹɪlˌeɪts wɪð ɪts sˈɔfənɪŋ pˈɔɪnt