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HOME | OUR VISION | PRODUCTS | MARKET SERVED | CUSTOMER RESPONSE | TECH INFO | MSDS INFO | SAFETY INFO | FEEDBACK | CONTACT INFO |
| Chemical Name: | Liquid Oxygen |
| Formula: |
O2 |
| Chemical Family: | Oxidizer |
| Use: | Welding, Medical |
| Synonyms: | Oxygen USP, Aviators Breathing Oxygen (ABO) |
| ¨ ¨ |
| NFPA Fire: | 0 | HMIS Fire: | 0 | Acute: | No |
| NFPA Health: | 3 | HMIS Health: | 3 | Chronic: | No |
| NFPA Reactivity: | 0 | HMIS Reactivity: | 0 | Fire: | Yes |
| NFPA Special Hazard: | SA | Mixture: | No | Reactive: | No |
| Sudden Release Pressure: | Yes |
| 02. INGREDIENTS - COMPOSITION & INFORMATION |
| PERCENT | EXPOSURE GUIDELINES |
| COMPONENT | CAS No. | (BY WT.) | OSHA - TWA | ACGIH - STEL |
|
Oxygen |
7782-44-7 |
99.0% | 100.0% | None. | Simple Asphyxiant |
| LD50: None. LC50: None. |
| 03. HAZARDS IDENTIFICATION |
| EMERGENCY OVERVIEW: |
| Warning: | Extremely cold oxidizing liquid and gas under pressure. |
| Vigorously accelerates combustion. |
| Combustibles in contact with liquid oxygen may explode on ignition or impact. |
| Can cause severe frostbite. |
| Potential Health Effects Information: |
| Routes of Exposure: |
| Inhalation: | Breathing 80% or more oxygen at atmospheric pressure for more that a few hours |
| may cause nasal stuffiness, cough , sore throat, chest pain and breathing difficulty. |
| Breathing oxygen at higher pressure increases the likelihood of adverse effects |
| within a shorter time period. Breathing pure oxygen under pressure may cause lung |
| damage and also central nervous system effects resulting in dizziness, poor |
| coordination, tingling sensation, visual and hearing disturbances, muscular twitching, |
| unconsciousness and convulsion. Breathing oxygen under pressure may cause |
| prolongation of adaptation to darkness and reduced peripheral vision. |
| Eye Contact: | Tissue freezing and severe cryogenic burns of eyes. |
| Skin Contact: | Tissue freezing and severe cryogenic burns of skin. |
| Chronic Effects: | None |
| Medical Conditions Aggravated By | None. |
| Overexposure: |
| Other Effects Of Overexposure | See Section 11 "Toxicological Information". |
| Carcinogenicity: | Oxygen is not listed by NTP, OSHA, or IARC |
| 04. FIRST AID MEASURES |
| Eye: | Incase of splash contamination, immediately flush eyes with plenty of water for at |
| least 15 minutes. See a physician, preferably an ophthalmologist, immediately. |
| Inhalation: | Move victim to fresh air. Call a physician. The physician should be advised that the |
| victim has been exposed to a high concentration of oxygen. |
| Rescue personnel should be aware of the extreme fire hazards associated with |
| oxygen-enriched atmospheres. |
| Skin: | Remove any clothing that may restrict circulation to frozen area. Do not rub frozen |
| parts as tissue damage may result. As soon as practical place the affected area in a |
| warm water bath which has a temperature not to exceed 105°F (40°C). Never use |
| dry heat. Remove and thoroughly air out contaminated clothing. In case of |
| massive exposure, remove clothing while showering with warm water. Call a |
| physician as soon as possible. |
| Frozen tissue is painless and appears waxy with a possible yellow color. It will |
| become swollen, painful, and prone to infection when thawed. If the frozen part of |
| the body has been thawed by the time medical attention has been obtained, cover |
| the area with dry sterile dressing with a large bulky protective covering. |
| Ingestion: | None. |
| Note To Physician: | Supportive treatment should include immediate sedation, anti-convulsive therapy if |
| needed, and rest. More detailed information can be found in Section 11 |
| "Toxicological Information" |
| 05. FIRE FIGHTING MEASURES |
| Flash Point: | Not applicable; Gas. |
| Auto ignition: | Not applicable. |
| Flammable Limits - Lower: | Not applicable. |
| Flammable Limits - Upper: | Not applicable. |
| Extinguishing Media: | Oxygen is nonflammable and will accelerate combustion. Use extinguishing media |
| appropriate for surrounding fire. |
| Fire Fighting Instructions: | Evacuate all personnel from the danger area. If possible, shut off flow of oxygen |
| which is supporting the fire. Immediately cool containers with water spray form |
| maximum distance. Do not direct water spray at the container vent. When cool, |
| move containers from fire area, if without risk. Liquid oxygen when spilled will |
| vaporize rapidly forming an oxygen-enriched vapor cloud. Evacuate this vapor |
| cloud area. |
| Fire And Explosion Hazards: | Oxidizing agent, vigorously accelerates combustion. Some materials which are |
| noncombustible in air will burn in the presence of an oxygen-enriched atmosphere |
| (over 23%). Oxygen may form explosive compounds when exposed to combustible |
| materials or oil, grease, and other hydrocarbon materials. |
| Liquid oxygen, when spilled, will vaporize rapidly, forming an oxygen-rich vapor |
| cloud. Evacuate this vapor cloud area. Visibility may be obscured in its vapor |
| cloud. |
| Upon exposure to intense heat or flame, cylinder will vent rapidly and or rupture |
| violently. Most cylinders are designed to vent contents when exposed to elevated |
| temperatures. |
| Pressure in a container can build up due to heat and it may rupture if pressure relief |
| devices should fail to function. |
| Contact with cold liquid or gaseous oxygen may cause frostbite. |
| Hazardous Combustion Products: | None known. |
| Sensitivity To Static Discharge: | Not applicable. |
| Sensitivity To Mechanical Impact: | None. |
| 06. ACCIDENTAL RELEASE MEASURES |
| Steps to be taken is material is released | Evacuate all personnel from the affected area. Shut off source of Oxygen, if |
| or spilled: | possible without risk. Ventilate area or remove leaking containers to a well |
| ventilated location. Remove sources of heat, ignition and, if possible, separate |
| combustibles from the leak. |
| If possible, prevent liquid oxygen from contacting grease, oil, asphalt and other |
| combustibles. To increase rate of vaporization, spray large amounts of water onto |
| the spill from an upwind position. Avoid contact with liquid oxygen or cold gas. |
| 07. HANDLING AND STORAGE |
| Storage: | Store and use with adequate ventilation. Do not store in a confined space. Post |
| "No Smoking or Open Flames" signs in the storage area. Cryogenic containers are |
| equipped with pressure relief devices to control internal pressure. Under normal |
| conditions these containers will periodically vent product. Some metals such as |
| carbon steel may become brittle at low temperatures and will easily fracture. |
| Prevent entrapment of liquid in closed systems or piping without pressure relief |
| devices. |
| Handling: | Never allow any unprotected part of the body to touch un-insulated pipes or vessels |
| which contain cryogenic fluids. The extremely cold metal will cause the flesh to |
| stick fast and tear when one attempts to withdraw from it. |
| Do not drop, tip, or roll containers on their side. If user experiences any difficulty |
| operating container valve discontinue use and contact supplier, Containers of liquid |
| oxygen should be separated from flammable gas containers by a minimum distance |
| of 20 ft., or by a barrier of noncombustible material at least 5 ft. high having a fire |
| resistance rating of 1/2 hour. For additional precautions in using liquid oxygen see |
| Section 16 - Other Information. |
| 08. EXPOSURE CONTROLS - PERSONAL PROTECTION |
| Engineering Controls: |
| Ventilation: | Natural or mechanical to prevent oxygen-enriched atmospheres over 21% oxygen. |
| Personal Protective Equipment (PPE): |
| Skin Protection: |
| Clothing: | Cotton clothing is recommended for use to prevent static buildup. Long sleeve shirts |
| and trousers without cuffs. |
| Eye/Face Protection: | Full face shield and safety glasses are recommended. |
| Shoes: | Safety shoes are recommended when handling cylinders. |
| Gloves: | Loose fitting thermal insulated or leather gloves. Gloves must be clean and free of |
| oil and grease. |
| Respiratory Protection: | Before entering area you must check for flammable and oxygen deficient |
| atmospheres. |
| Respirator: | None required in general use. |
| Respirator: | Wear a Self contained breathing apparatus (SCBA) or NIOSH/MSHA-approved |
| (or equivalent) full-face piece airline respirator in the positive pressure mode in |
| oxygen deficient atmospheres (air purifying respirators will not provide protection). |
| 09. PHYSICAL AND CHEMICAL PROPERTIES |
| Physical State: | Liquid gas |
| Color: | Pale blue |
| Odor: | Odorless |
| Molecular Weight: | 32 |
| Boiling Point: | -297.3°F (-183.0°C) @ 1 atm |
| Specific Gravity: | 1.14 At 70°F (21.1°C) @ 1 atm, Air = 1 |
| Freezing/Melting Point: | -361.1°F (-218.4°C), @ 1 atm |
| Vapor Pressure: | Not Applicable |
| Vapor Density: | .083 lb./cu ft (1.326 kg/CuM), At 70°F (21.1°C) @ 1 atm |
| Water Solubility: | .0489 Vol./Vol. At 32° F (0°C) |
| Expansion Ratio: | 1-860.5 70°F (21.1°C) |
| pH: | Not Applicable - Gas |
| Odor Threshold: | Not Applicable - Gas |
| Evaporation Rate: | Not Applicable - Gas |
| Coefficient Of Water/Oil Distribution: | Information not available |
| 10. STABILITY AND REACTIVITY |
| Chemical Stability: | Stable. |
| Conditions To Avoid: | None. |
| Incompatibility With Other Materials: | Flammable materials, hydrocarbons such as oils and grease, asphalt, ethers, alcohols, |
| acids and aldehydes. Oxygen reacts with many materials. Refer to NFPA 491 M |
| Manual of Hazardous Chemical Reactions. |
| Hazardous Decomposition Products: | None. |
| Hazardous Polymerization: | Will not occur. |
| 11. TOXICOLOGICAL INFORMATION |
| Other Studies Relevant To Material: | At atmospheric concentration and pressure, oxygen poses no toxicity hazards. |
| Premature infants exposed to high oxygen concentrations may suffer delayed retinal |
| damage which can progress to retinal detachment and blindness. Retinal damage |
| may also occur in adults exposed to 100% oxygen for extended periods (24 to 48 |
| hr). |
| At two or more atmospheres central nervous system (CNS) toxicity occurs. |
| Symptoms include nausea, vomiting, dizziness or vertigo, muscle twitching, vision |
| changes, and loss of consciousness and generalized seizures. At three atmospheres, |
| CNS toxicity occurs in less than two hours, and at six atmospheres in only a few |
| minutes. |
| Additional Notes to Physician: | Animal studies suggest that the administration of certain drugs, including |
| phenothiazine drugs and chloroquine, increase the susceptibility to toxicity from |
| oxygen at high pressures. Animal studies also indicate that vitamin "E" deficiency |
| may increase susceptibility to oxygen toxicity. |
| Airway obstruction during high oxygen tension may cause alveolar collapse |
| following absorption of the oxygen. Similarly, occlusion of the Eustachian tubes may |
| cause retraction of the eardrum and obstruction of the paranasal sinuses may |
| produce "vacuum-type" headache. |
| All individuals exposed for long periods to oxygen at high pressure and who exhibit |
| overt oxygen toxicity should have ophthalmologic examinations. |
| Irritancy Of Material: | None. |
| Reproductive Effects: | None. |
| Teratogenicity: | None. |
| Synergistic Materials: | None. |
| Sensitization To Material: | None. |
| Mutagenicity: | None. |
| 12. ECOLOGICAL INFORMATION |
| Additional Information: | The atmosphere contains approximately 21% oxygen. No adverse ecological |
| effects are expected. Oxygen does not contain any Class I or Class II ozone |
| depleting chemicals (40 CFR Part 82). Oxygen is not listed as a marine pollutant by |
| DOT (49 CFR Part 171). |
| 13. DISPOSAL CONSIDERATIONS |
| Waste Disposal Method: | Do not attempt to dispose of residual or unused quantities. Return cylinder to |
| supplier. |
| Unserviceable cylinders should be returned to the supplier for safe and proper |
| disposal. |
| For emergency disposal, discharge slowly to the atmosphere in a well ventilated |
| area or outdoors. |
| 14. TRANSPORT INFORMATION |
| DOT/IMO Shipping Name: | Oxygen, refrigerated liquid. |
| Hazard Class: | 2.2 (Nonflammable gas.) |
| Identification Number: | UN 1073 |
| PIN: | 1073 |
| Product RQ: | None. |
| Shipping Label: | Oxygen. An oxygen label may be used for domestic shipment in the United States |
| and Canada in place of the nonflammable and oxidizer labels, (49 CFR Part 172). |
| Special Shipping Information: | Cylinders should be transported in a secure position, in a well ventilated vehicle. |
| The transportation of compressed gas cylinders in automobiles or in closed-body |
| vehicles can present serious hazards and should be discouraged. |
| Placard (When Required): | Nonflammable Gas. |
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