- Oxygen, refrigerated liquid (cryogenic liquid)
- Liquid oxygen
Oxygen is a colorless, odorless and tasteless gas. As a non-liquid gas it is shipped at pressures of 2000 psig or above.
Manufacture of synthesis gas for prodn of ammonia, methyl alcohol, acetylene, etc, to counteract effect of eutrophication in lakes & reservoirs, coal gasification.
Registry Numbers and Inventories.
EC Index Number
Mutagen; Reproductive Effector; Human Data
Swiss Giftliste 1
Melting point, °C
Boiling point, °C
Vapor pressure, mmHg
1905 (-173 C)
Vapor density (air=1)
Odor Threshold Odor threshold Odorless
1.14 g/cm3 (20 C)
Solubility in water
gas: 1 atm at 25C (0.020 75 cp)
Partition coefficient, pKow
Heat of fusion
Heat of vaporization
Hazards and Protection.
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Wear appropriate protective gloves, clothing and goggles. Always wear thermal protective clothing when handling refrigerated/cryogenic liquids.
Wear positive pressure self-contained breathing apparatus (SCBA).
Keep sparks, flames, and other sources of ignition away. Attempt to stop leak if without undue personnel hazard. Do not use water on material itself.
Dangerously explosive. Cool all affected containers with flooding quantities of water. Do not use water on material itself. Apply water from as far a distance as possible.
Substance does not burn but will support combustion.
Some may react explosively with fuels. May ignite combustibles (wood, paper, oil, clothing, etc.). Vapors from liquefied gas are initially heavier than air and spread along ground. Runoff may create fire or explosion hazard. Containers may explode when heated. Ruptured cylinders may rocket.
Significant dermal exposure to the escaping compressed gas or liquid oxygen may cause reduced body temperature. Seizures - central nervous system involvement in hyperbaric situations may pose a significant threat to safety.
Necrotizing enterocolitis in premature neonates may be, at least partially, caused by oxygen-generated free radicals.
Vapors may cause dizziness or asphyxiation without warning.
Direct contact with the escaping compressed gas or liquid oxygen may cause frostbite injury to the skin.
Vision loss, myopia, nuclear cataracts, retrolental fibroplasia, and ocular frostbite injury may occur under various conditions of oxygen exposure. Sinus mucosal inflammation, and pharyngeal edema may occur with oxygen administration.
Unlikely route of exposure - because oxygen is a gas at ambient temperatures, ingestion is an unlikely route of exposure.
In all but the most severe cases (pneumonia), recovery is rapid after reduction of oxygen pressure; supportive treatment should include immediate sedation, anticonvulsive therapy if needed, and rest.
Treat frostbite; soak in lukewarm water.
Treat frostbite burns.
USCG CHRIS Code
Std. Transport #