Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information
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Oxygen(7782-44-7)

Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information

Product Identification

Product Name
Oxygen
Synonyms
Liquid oxygen
LOX
Oxygen, refrigerated liquid (cryogenic liquid)
CAS
7782-44-7
Formula
O2
Molecular Weight
31.99
EINECS
231-956-9
RTECS
RS2060000
RTECS Class
Mutagen; Reproductive Effector; Human Data
Merck
12,7098
Beilstein/Gmelin
485 (G)
EC Index Number
008-001-00-8
EC Class
Oxidising

Physical and Chemical Properties

Appearance
Oxygen is a colorless, odorless and tasteless. As a liquid, it has a pale blue color.
Solubility in water
Very soluble
Melting Point
-218.3
Boiling Point
-183.17
Vapor Pressure
1905 (-173 C)
Density
1.14 g/cm3 (20 C)
Partition Coefficient
-.53
Heat Of Vaporization
6.8 kJ/mol
Usage
Manufacture of synthesis gas for prodn of ammonia, methyl alcohol, acetylene, etc, to counteract effect of eutrophication in lakes & reservoirs, coal gasification.
Vapor Density
1.43
Odor threshold
Odorless

First Aid Measures

Ingestion
Unlikely route of exposure - because oxygen is a gas at ambient temperatures, ingestion is an unlikely route of exposure.
Inhalation
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.
Skin
Treat frostbite; soak in lukewarm water.
Eyes
Treat frostbite burns.

Handling and Storage

Storage
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.
Handling
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.

Hazards Identification

Inhalation
Vapors may cause dizziness or asphyxiation without warning.
Skin
Direct contact with the escaping compressed gas or liquid oxygen may cause frostbite injury to the skin.
Eyes
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.
Ingestion
Necrotizing enterocolitis in premature neonates may be, at least partially, caused by oxygen-generated free radicals.
Hazards
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.
UN (DOT)
1073

Exposure Controls/Personal Protection

Personal Protection
Wear appropriate protective gloves, clothing and goggles. Always wear thermal protective clothing when handling refrigerated/cryogenic liquids.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Exposure Effects
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.
Poison Class
-

Fire Fighting Measures

Fire Fighting
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.
Fire Potential
Substance does not burn but will support combustion.

Accidental Release Measures

Small spills/leaks
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.

Stability and Reactivity

Stability
No data.

Transport Information

UN Number
1073
Hazard Class
5.1
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