non-splitting
non-staining
non-standard
non-stationary
nonstationary
non-steady
nonsteady
non-steady-state
non-strain-ageing
non-sulphur
  non-sulphurous
non-superconducting
non-swelling
nonsymbolic
non-symmetric
non-synchronous
nonsynchronous
nonsystematic
non-thermal
non-tight
non-toppling

    non-sulphurous oil

    бессернистая нефть