Helium gas cylinders are typically made of high-quality steel or aluminum and contain compressed helium gas.

 Helium gas cylinders are typically made of high-quality steel or aluminum and contain compressed helium gas. They are designed to be durable and secure, with sealed valves to prevent leaks. Important safety considerations include storing cylinders upright, away from heat and physical damage, and ensuring adequate ventilation during use. Never inhale helium from a cylinder, as it can cause asphyxiation. 

A Safety Data Sheet (SDS) for helium gas, revised in 2025, would outline safety information for handling and storage, including potential hazards and recommended precautions. Key aspects would include its non-flammability, the potential for oxygen displacement leading to asphyxiation at high concentrations, and the need for adequate ventilation. 

Key information typically found in a 2025 Helium SDS:

Identification: Helium (CAS Number: 7440-59-7), UN1046 for compressed helium, UN1963 for liquid helium. 

Hazards Identification: Non-flammable, classified as a simple asphyxiant. High concentrations can displace oxygen, leading to asphyxiation and potential unconsciousness or death. 

First Aid Measures: In case of inhalation, remove the person to fresh air and seek medical attention if symptoms persist. For skin contact with liquid helium, flush with water and seek medical attention for frostbite. 

Fire-Fighting Measures: Helium is non-flammable and does not support combustion. In case of fire, use appropriate extinguishing media for surrounding materials and cool cylinders with water. 

Accidental Release Measures: Ensure adequate ventilation, and if in liquid form, prevent contact with skin. Avoid discharge into waterways or drains. 

Handling and Storage: Store in a cool, well-ventilated area, away from incompatible substances (e.g., oxidizing agents). Protect from physical damage, and ensure cylinders are properly secured. 

Exposure Controls/Personal Protection: Use appropriate ventilation to maintain oxygen levels above 19.5%. Wear safety glasses with side shields and appropriate gloves for cylinder handling. 

Physical and Chemical Properties: Colorless, odorless, non-flammable gas. The boiling point of liquid helium is -269°C, according to Airlife Gases. 

Stability and Reactivity: Stable under normal conditions. No hazardous decomposition products. 

Toxicological Information: Helium is not acutely toxic, but it can cause asphyxiation. 

Ecological Information: No known ecological damage caused by helium. 

Composition:

Cylinder Material: Helium gas cylinders are commonly made of high-quality steel or aluminum. 

Gas: The cylinder contains compressed helium gas, which is a non-toxic, inert, and colorless gas. 

Seals: Cylinders have sealed valves to prevent leaks and ensure the safe containment of the gas. 

Safety Precautions:

Storage:

Store cylinders upright in a well-ventilated area, away from heat, direct sunlight, and physical damage. 

Secure cylinders to prevent them from falling or being knocked over. 

Keep cylinders away from heavily trafficked areas and emergency exits. 

Segregate full and empty cylinders. 

Handling:

Always wear appropriate personal protective equipment (PPE) when handling cylinders, including gloves and safety glasses. 

Use a hand truck or other suitable equipment to move cylinders. 

Avoid dragging, rolling, sliding, or dropping cylinders. 

Usage:

Ensure adequate ventilation when using helium, as it can displace oxygen and cause asphyxiation. 

Never inhale helium from a cylinder or balloon, as it can be dangerous and cause serious injury or death. 

In case of a leak, evacuate the area and ensure proper ventilation. 

Follow all instructions and warnings provided on the cylinder and in the Material Safety Data Sheet (MSDS). 

Disposal:

Return unused product in its original container to the supplier. 

Do not discharge helium into any place where its accumulation could be dangerous. 

By following these safety guidelines, the risk of injury or accident when handling and using helium gas cylinders can be significantly reduced.