1. Color, taste, state: colorless and odorless gas (standard condition)
2. Melting point: -218.4℃, boiling point: -182.9℃
3. Density: 1.429 g/l (gas), 1.419 g/cm 3 (liquid), 1.426 g/cm 3 (solid)
4. Water solubility: it is not easily soluble in water
5. Storage: Sky blue cylinder

1. Dip the oxygen tube into the water cup
2. Loosen the chuck to observe the continuous discharge of bubbles
3. Pressure outside the bag or adjusting the chuck
4. Close the clamp and plug the hose to prevent air leakage.

1. Do not exceed the prescribed service pressure
2. Remaining isolating agent should be discharged completely while beating.
3. The amount of oxygen absorbed is adjusted by clamps
4. Do not squeeze, do not approach the fire;
5. Avoid light and heat, avoid contact with sharp objects and chemicals