naphthalene balls

Is Naphthalene Toxic To Humans? Naphthalene is used in the production of phthalic anhydride; it is also used in mothballs. Acute (short- term) exposure of humans to naphthalene by inhalation, ingestion, and dermal contact is associated with hemolytic anemia, damage to the liver, and neurological damage. How much naphthalene is harmful? The Occupational Safety and