Bitumen typically contains, elementally 80% by weight of carbon; 10% hydrogen; up to 6% sulfur; and molecularly, between 5 and 25% by weight of asphaltenes dispersed in 90% to 65% maltenes.
bɪtˈuːmɛn tˈɪpɪkli kəntˈeɪnz, ˌɛlɪmˈɛntəli ˈeɪɾi pɚsˈɛnt baɪ wˈeɪt ʌv kˈɑːɹbən; tˈɛn pɚsˈɛnt hˈaɪdɹədʒən; ˌʌp tə sˈɪks pɚsˈɛnt sˈʌlfɜː; ænd məlˈɛkjʊlɚli, bᵻtwˌiːn fˈaɪv ænd twˈɛnti fˈaɪv pɚsˈɛnt baɪ wˈeɪt ʌv ˈæsfɐltˌiːnz dɪspˈɜːst ɪn nˈaɪnti pɚsˈɛnt tə sˈɪksti fˈaɪv pɚsˈɛnt mˈɔltiːnz.