The crystalline form or strong solutions are severe skin irritants. Lesions resemble thermal burns. Vapors severely irritate the eyes. Causes tearing and inflammation of the eyelids. May cause insomnia, conjunctivitis, inflammation of the nasal mucous, bronchitis, tremor, rapid heart beat, diarrhea and weight loss.
Allergic sensitization can occur.
Persons with pre-existing skin disorders, eye problems, impaired respiratory function, or disease of the thyroid, lungs, or kidney may be more susceptible to the effects of the substance. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Call a physician. Observe for the development of pulmonary edema.