Though mineral spirits is one of the safer alternative cleaners and solvents, it is described by the Occupational Health and Safety Administration (OSHA) as a mild dermal irritant. It also receives a class 3 flammability rating; once its relatively high flashpoint is reached, mineral spirits will burn just like any hydrocarbon-based solvent, thereby emitting dangerous toxins. Additionally, chronic toxic encephalopathy, a brain ailment often found in commercial and residential painters, has been blamed on prolonged exposure to mineral spirits. Therefore, although mineral spirits is a far safer alternative to many solvents in certain applications, it should, like any petroleum distillate, be stored and handled with proper care.