While common, these crudes are sulfurous and require more refining and expense to turn into valuable fuels such as gasoline.
Duck through a low tunnel into the cave, with its wide pool of clear sulfurous water.
Large eruptions do change atmospheric composition especially due to the sulfurous dust they generate in the stratosphere.
Sometimes the proteins turn yellow or brown, though, or acquire a strong odor-from mushroomy to acidic or sulfurous.
Skunks and zorilles mimic the sulfurous, anoxic stink of a swamp.
Even so, geography emits a sulfurous odor of heresy.
sulfurous acid can be manufactured by oxidizing elemental sulfur in a burner chamber with pressurized water.
Especially sulfurous materials was removed completely.
Word Origin and History for sulfurous
also sulfurous, 1520s, "of the nature of brimstone," from sulfur + -ous. Hence figurative use with suggestions of hellfire (c.1600). Scientific chemistry sense is from 1790. Earlier in the "brimstone-like" sense was sulphurious (late 15c.).