Acetylene Storage — C2H2 Acetone-Saturated Cylinder Selection

Storing Acetylene? This Isn't a Tank Chemical

Straight answer: acetylene isn't stored in tanks — it's a cylinder gas. It's the most reactive common industrial gas and can decompose explosively above about 15 psig, so it's dissolved in acetone inside specially-packed cylinders, not held in bulk tanks. We're being upfront so you don't go looking for the wrong product.

So where does a tank fit? It doesn't.

There's no polyethylene-tank application for acetylene. It's handled exclusively in DOT-spec cylinders (acetylene dissolved in acetone within a porous filler). The only hard material rules worth knowing: never use copper or silver in the system — acetylene forms impact-sensitive explosive acetylides with both.

The safety that actually matters

• Extremely flammable, can decompose explosively — cylinder-only handling, kept upright, below 15 psig at the tool.
• No copper or silver anywhere in the wetted path.

Common questions

Can I store acetylene in a tank?

No — it's a cylinder gas (dissolved in acetone in a packed cylinder). There's no bulk-tank or poly-tank option.

Why no copper fittings?

Acetylene + copper (or silver) forms an impact-sensitive explosive. Keep both out of the system.