Care of persons exposed to toxic chemicals must be directed by a physician or other recognized authority. Pure Form - Crystalline, colorless. Possible chemical warfare agent. When heated to decomposition, emits very dangerous cyanides and sulfur compounds. Methyl isothiocyanate is very toxic and highly irritating to skin, mucous membranes, and eyes.
Caution is advised.
Signs and symptoms of acute exposure to methyl isothiocyanate is an irritant to eyes, skin, lungs, and the mucous membranes of the gastrointestinal tract. Also, headache, vomiting, abdominal pain, insomnia, and anxiety neurosis with depression, or paranoid tendencies may be produced. Acute exposure to methyl isothiocyanate exposure may require decontamination and life support for the victims. Emergency personnel should wear protective clothing appropriate to the type and degree of contamination. Rescue vehicles should carry supplies such as plastic sheeting and disposable plastic bags to assist in preventing spread of contamination.