Answer: coaltar

AnswerCrossword Clue
COALTARPsoriasis treatment
COALTARIngredient in medicated shampoo
COALTAR... pitch (paving goo)
COALTAR... pitch (former paving product)
COALTARDye source
COALTARSource of benzene, phenol, etc.
COALTARSource of many synthetics and dyes.
COALTARSubstance used in dyes.
COALTARLiquid used in dyes.
COALTARCertain pitch
COALTARAspirin source
COALTARBenzene source
COALTARDark dye ingredient
COALTARCreosote source