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Acetylene is a colourless gas, slightly lighter than air. It is non-toxic, but has an anesthetic effect if inhaled. Acetylene is highly flammable. Mixed with oxygen for welding the flame temperature will reach 3100°C. Acetylene mixed with air is explosive within 2.2% to 85% by volume. Avoid releasing acetylene into the air and ensure good ventilation where acetylene cylinders are stored or used.
Tare "A" weight of acetylene cylinders includes cylinder shell, neckring, valve, porous mass and acetone. For acetylene the following is valid:
| 1 nm3 |
= 1.095 kg. |
| 1 kg |
= 0.91 nm3 |
| 1 bar |
= 14.5 psi |
| 1 nm3 |
= 35.3 ft3 |
| 1 kg |
= 2.2 lbs |
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