LIQUEFIED GAS (NONFLAMMABLE)

Liquids other than those classified as flammable, corrosive or poisonous. Charged with nitrogen, carbon dioxide, or air for the purpose of expelling the liquid from the container. Under prolonged exposure to fire or heat the containers may rupture violently and rocket.

none

No rapid reaction with air. No rapid reaction with water.

Excerpt from 120 [Gases - Inert (Including Refrigerated Liquids)]:

Non-flammable gases. Containers may explode when heated. Ruptured cylinders may rocket. (ERG, 2020)

Excerpt from 120 [Gases - Inert (Including Refrigerated Liquids)]:

Vapors may cause dizziness or asphyxiation without warning. Vapors from liquefied gas are initially heavier than air and spread along ground. Contact with gas or liquefied gas may cause burns, severe injury and/or frostbite. (ERG, 2020)

Almost any reducing agent and all hydrocarbons can form explosive mixtures with liquefied air [Chem. Eng. News 27:2612. 1949]. Explosions have occurred when liquid air contacts organic matter. A cracked tube of activated charcoal immersed in liquid air exploded violently [J. Sci. Inst. 5:24. 1928]. Allyldimethylarsine ignites in air and on filter paper [NFPA 491M. 1991]. The slow reaction between nitrogen dioxide and formaldehyde becomes explosive in the region of 180°C [Trans. Faraday Soc. 45:767-770, 1949]. Nitrogen dioxide and ozone react with the evolution of light, and often explode [J. Chem. Phys. 18:366. 1920]. Contact of very cold liquefied gas with water may result in vigorous or violent boiling of the product and extremely rapid vaporization due to the large temperature differences involved. If the water is hot there is the possibility that a liquid "superheat" explosion may occur. Pressures may build to dangerous levels if liquid gas contacts water in a closed container [Handling Chemicals Safely 1980].

• Not Chemically Reactive

No information available.

Excerpt from 120 [Gases - Inert (Including Refrigerated Liquids)]:

IMMEDIATE PRECAUTIONARY MEASURE: Isolate spill or leak area for at least 100 meters (330 feet) in all directions.

LARGE SPILL: Consider initial downwind evacuation for at least 100 meters (330 feet).

FIRE: If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2020)

Excerpt from 120 [Gases - Inert (Including Refrigerated Liquids)]:

Use extinguishing agent suitable for type of surrounding fire. If it can be done safely, move undamaged containers away from the area around the fire. Damaged cylinders should be handled only by specialists.

FIRE INVOLVING TANKS: Fight fire from maximum distance or use unmanned master stream devices or monitor nozzles. Cool containers with flooding quantities of water until well after fire is out. Do not direct water at source of leak or safety devices; icing may occur. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks engulfed in fire. (ERG, 2020)

Excerpt from 120 [Gases - Inert (Including Refrigerated Liquids)]:

Do not touch or walk through spilled material. Stop leak if you can do it without risk. Use water spray to reduce vapors or divert vapor cloud drift. Avoid allowing water runoff to contact spilled material. Do not direct water at spill or source of leak. If possible, turn leaking containers so that gas escapes rather than liquid. Prevent entry into waterways, sewers, basements or confined areas. Allow substance to evaporate. Ventilate the area. CAUTION: When in contact with refrigerated/cryogenic liquids, many materials become brittle and are likely to break without warning. (ERG, 2020)

Excerpt from ERG Guide 120 [Gases - Inert (Including Refrigerated Liquids)]:

Wear positive pressure self-contained breathing apparatus (SCBA). Structural firefighters' protective clothing provides thermal protection but only limited chemical protection. Always wear thermal protective clothing when handling refrigerated/cryogenic liquids or solids. (ERG, 2020)

No information available.

Excerpt from 120 [Gases - Inert (Including Refrigerated Liquids)]:

Call 911 or emergency medical service. Ensure that medical personnel are aware of the material(s) involved and take precautions to protect themselves. Move victim to fresh air if it can be done safely. Give artificial respiration if victim is not breathing. Administer oxygen if breathing is difficult. Clothing frozen to the skin should be thawed before being removed. In case of contact with liquefied gas, thaw frosted parts with lukewarm water. Keep victim calm and warm. (ERG, 2020)

• LIQUEFIED GAS (NONFLAMMABLE)
• LIQUEFIED GASES, NON-FLAMMABLE, CHARGED WITH NITROGEN, CARBON DIOXIDE OR AIR
• LIQUEFIED NONFLAMMABLE GAS, [CHARGED WITH NITROGEN, CARBON DIOXIDE, OR AIR]