| Product Identification | Back to Contents | 【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 | Back to Contents | 【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 | Back to Contents | 【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 | Back to Contents | 【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 | Back to Contents | 【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 | Back to Contents | 【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 | Back to Contents | 【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. |
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| Company Name: |
Sigma-Aldrich |
| Tel: |
021-61415566 800-8193336 |
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| WebSite: |
https://www.sigmaaldrich.cn |
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