Handle with care. It will cause severe burns to exposed skin and eyes. The vapour is also a strong irritant and corrosive. Always use a fume hood when handling this acid. It can cause kidney damage and can be absorbed through the skin in doses large enough to cause toxicity.
Inhalation can cause erosion of the respiratory tract.
Over exposure to iodine vapour can be fatal. This is a very dangerous substance and should be handled with extreme care. Ingestion will cause severe abdominal pain. It is a combustible powder and should never be handled close to heat or naked flame. It is a known carcinogen and should be handled with extreme care.