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| Product Name: | Nitrogen, Refrigerated Liquid |
| Chemical Name: | Nitrogen |
| Formula: | N2 | 0 |
| Chemical Family: | Inert gas | 3 | 0 |
| Use: | Various, inerting, medical, food freezing | SA |
| Synonyms: | Nitrogen NF, LIN, Cryogenic Liquid Nitrogen, Liquid Nitrogen |
| ¨ ¨ |
| NFPA Fire: | 0 | HMIS Fire: | 0 | Acute: | Yes |
| NFPA Health: | 3 | HMIS Health: | 3 | Chronic: | No |
| NFPA Reactivity: | 0 | HMIS Reactivity: | 0 | Fire: | No |
| 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 |
| Nitrogen | 7727-37-9 | 99.0% | 100.0% | None. | Simple Asphyxiant |
| LD50: None. LC50: None. |
| 03. HAZARDS IDENTIFICATION |
| EMERGENCY OVERVIEW: |
| Warning: | Extremely cold liquid and gas under pressure. |
| Can cause rapid suffocation. |
| May cause severe frostbite. |
| Potential Health Effects Information: |
| Routes of Exposure: |
| Inhalation: | Simple asphyxiant. Nitrogen is nontoxic, but may cause suffocation by displacing |
| the oxygen in air. Exposure to oxygen-deficient atmosphere (<19.5%) may cause |
| dizziness, drowsiness, nausea, vomiting, excess salivation, diminished mental |
| alertness, loss of consciousness and death. Exposure to atmospheres containing |
| 8-10% or less oxygen will bring about unconsciousness without warning and so |
| quickly that the individuals cannot help or protect themselves. Lack of sufficient |
| oxygen may cause serious injury or death. |
| 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: |
| Carcinogenicity: | Nitrogen is not listed by NTP, OSHA, or IARC |
| Other Effects Of Overexposure: | None. |
| 04. FIRST AID MEASURES |
| Inhalation: | Remove to fresh air. If not breathing, give artificial respiration. If breathing is |
| difficult, give oxygen. Get medical attention. |
| Eye: | In case of splash contamination, immediately flush eyes with water for at least 15 |
| minutes. See physician, preferably an ophthalmologist, immediately. |
| 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. |
| Notes To Physician: | None. |
| 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: | Nitrogen is nonflammable and does not support combustion. Use extinguishing |
| media appropriate for the surrounding fire. |
| Fire Fighting Instructions: | Nitrogen is a simple asphyxiant. If possible, remove nitrogen cylinders from fire |
| area or cool with water. Do not direct water spray at the container vent. |
| Self-contained breathing apparatus may be required for rescue workers. Evacuate |
| this area. |
| Fire And Explosion Hazards: | Liquid nitrogen when spilled will vaporize rapidly forming an oxygen deficient vapor |
| cloud. Evacuate this vapor cloud area. Visibility may be obscured in its vapor |
| cloud. 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 |
| gaseousnitrogenn may cause frostbite. |
| Hazardous Combustion Products: | None known. |
| Sensitivity To Static Discharge: | Not applicable. |
| Sensitivity To Mechanical Impact: | None. |
| 06. ACCIDENTAL RELEASE MEASURES |
| Evacuate: | Evacuate all personnel from the affected area. Shut off source of Nitrogen if |
| possible without risk. Ventilate area or remove leaking containers to a well |
| ventilated location. |
| To increase rate of vaporization, spray large amounts of water onto the spill from an |
| upwind position. Avoid contact with liquid nitrogen or cold gas. If leaking from |
| container or its valve, contact your supplier. |
| 07. HANDLING AND STORAGE |
| Storage: | Store and use with adequate ventilation. Do not store in a confined space. |
| 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. |
| Use a suitable hand truck for container movement, Cryogenic containers shall be |
| handled and stored in an upright position. Do not drop, or roll containers on their |
| sides, If user experiences any difficulty operating container valve discontinue use, |
| and contact supplier. For additional precautions in using liquid nitrogen see Section |
| 16 - Other Information. |
| 08. EXPOSURE CONTROLS - PERSONAL PROTECTION |
| Engineering Controls: |
| Ventilation: | Natural or mechanical to prevent oxygen-deficient atmospheres under 19.5% |
| oxygen. |
| Personal Protective Equipment (PPE): |
| Clothing: | 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. |
| Respiratory Protection: | Before entering area you must check for flammable and oxygen deficient |
| atmospheres. |
| Respirator: | None required in general use. |
| Emergency Use: | Self-contained breathing apparatus (SCBA) or positive pressure airline with mask |
| are to be used in oxygen-deficient atmosphere. Respirators will not function. |
| 09. PHYSICAL AND CHEMICAL PROPERTIES |
| Physical State: | Liquid gas |
| Color: | Colorless |
| Odor: | Odorless |
| Molecular Weight: | 28.01 |
| Boiling Point: | -320.4°F (-195.8°C) @ 1 atm |
| Specific Gravity: | .967 At 70°F (21.1°C) @ 1 atm, Air = 1 |
| Freezing/Melting Point: | -345.8°F (-209.9°C), @ 1 atm |
| Vapor Pressure: | Not Applicable |
| Vapor Density: | .072 lb./cu ft (1.153 kg/CuM), At 70°F (21.1°C) @ 1 atm |
| Water Solubility: | .023 Vol./Vol. At 32° F (0°C) |
| Expansion Ratio: | 1-696.5 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: | None |
| Hazardous Decomposition Products: | None |
| Hazardous Polymerization: | Will not occur |
| 11. TOXICOLOGICAL INFORMATION |
| Irritancy Of Material: | None. |
| Reproductive Effects: | None. |
| Teratogenicity: | None. |
| Synergistic Materials: | None. |
| Sensitization To Material: | None. |
| Mutagenicity: | None. |
| 12. ECOLOGICAL INFORMATION |
| Unassigned: | The atmosphere contains approximately 78% nitrogen. No adverse ecological |
| effects are expected. Nitrogen does not contain any Class I or Class II ozone |
| depleting chemicals (40 CFR Part 82). Nitrogen 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. |
| For emergency disposal, discharge slowly to the atmosphere in a well ventilated |
| area or outdoors. |
| 14. TRANSPORT INFORMATION |
| DOT/IMO Shipping Name: | Nitrogen, refrigerated liquid. |
| Hazard Class: | 2.2 (Non Flammable gas.) |
| Identification Number: | UN 1977 |
| PIN: | 1977 |
| Product RQ: | None. |
| Shipping Label: | Nonflammable Gas |
| Placard (When Required): | Nonflammable Gas. |
| 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. |
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