Alkanes do not conduct electricity in any way, nor are they substantially polarized by an electric field.
ˈælkeɪnz duːnˌɑːt kəndˈʌkt ᵻlɛktɹˈɪsᵻɾi ɪn ˌɛni wˈeɪ, nˈɔːɹ ɑːɹ ðeɪ səbstˈænʃəli pˈoʊlɚɹˌaɪzd baɪ ɐn ᵻlˈɛktɹɪk fˈiːld.