The health hazards associated with overexposure to argon are minimal. But it is a simple asphyxiant, so in ceratin cases a release of a large volume of argon can pose a hazard of asphyxiation. Argon is neither flammable nor reactive. read more
Argon is completely harmless. Argon is a noble gas thus can't be flamable. It is even in the air you breathe. It only becomes dangerous if there is so much it depletes the oxygen level. read more
But it is a simple asphyxiant, so in ceratin cases a release of a large volume of argon can pose a hazard of asphyxiation. Argon is neither flammable nor reactive. If a tank of argon is heated or punctured, the tank may rupture and cause physical injury. read more