⚠ WARNING: Inert noble gas used as welding shielding gas. Simple asphyxiant — displaces oxygen and can cause rapid unconsciousness in confined spaces without warning (colorless, odorless). Cylinders are high-pressure hazards.
GHS Hazard Pictograms
🔵 Compressed Gas
Hazard Statements (H-codes)
H280 – Contains gas under pressure; may explode if heated
H336 – May cause drowsiness or dizziness (asphyxiant at high concentrations)
Precautionary Statements (P-codes)
P410+P403 – Protect from sunlight; store in well-ventilated place
P261 – Avoid breathing gas
P271 – Use only outdoors or in well-ventilated area
First Aid Measures (Section 4)
👁Eye Contact▼
Cryogenic liquid contact: do not rub. Flush gently with tepid water. Seek medical attention.
🖐Skin Contact▼
Cryogenic contact causes frostbite — do not rub frozen tissue. Rewarm with tepid water.
🫁Inhalation▼
Remove to fresh air immediately. If unconscious, call 911. Do not enter oxygen-deficient space without SCBA.
🫦Ingestion▼
Not applicable (gas under normal conditions).
Storage & Handling
🔒 Storage & Handling: Secure cylinders upright in well-ventilated area. Keep away from heat and incompatible gases. Use cylinder caps when not in use.
PPE Requirements
Safety glasses
Welding gloves when handling cylinders
Oxygen monitor in confined spaces
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