Hydrogen in Argon

Physical and chemical properties
Physical state: Compressed gas.
Appearance: Colorless.
Odor: Odorless.

Hazard Statements

Contains gas under pressure; may explode if heated
May displace oxygen and cause rapid suffocation

Prevention

Use and store only outdoors or in a well ventilated place
Use a back flow preventive device in piping
Use only with equipment rated for cylinder pressure
Close valve after each use and when empty

Handing and storage

Store in cool, dry, well-ventilated area of non-combustible construction away from heavily trafficked areas and emergency exits.
Keep at temperatures below 52°C / 125°F.
Cylinders shouldbe stored upright with valve protection cap in place and firmly secured to prevent falling.
Full and empty cylinders should be segregrated.
Use a "first in-first out" inventory system to prevent full cylinders from being stored for excessive periods of time.
Stored containers should be periodically checked for general condition and leakage.