Characteristics
These materials are extremely cold (-110°C to -270°C). Upon contact with cryogenic materials, living tissue can freeze and become brittle enough to shatter. Additional hazards include rapid pressure buildup, oxygen enrichment, and asphyxiation. Rapid pressure buildup could lead to an explosion if cryogen is improperly contained.
Laboratory Chemicals
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liquid argon
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liquid carbon monoxide
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liquid ethylene
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liquid fluorine
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liquid helium
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liquid hydrogen
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liquid methane
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liquid nitrogen
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liquid oxygen
Storage Precautions for Cryogens
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Store and handle in a well-ventilated area. When liquid cryogens are converted to the gaseous phase, they may create an oxygen deficiency. Do not use cryogens in small enclosed spaces.
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Use only approved storage vessels (i.e., thermos-like evacuated, double-walled containers) with pressure relief mechanisms. Non-approved vessels may explode.
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Secure containers so they will not tip over or obstruct an aisle, hallway, or corridor during an earthquake.