Agent Name

Argon

CAS Number

7440-37-1

Formula

Ar

Major Category

Toxic Gases & Vapors

Synonyms

Argon-40; [ChemIDplus] UN1006; UN1951

Category

Simple Asphyxiants

Description

An inert gas that is colorless and odorless; [ACGIH] Heavier than air; [Burke, p. 90]

Sources/Uses

Used as an inert gas in arc welding, semiconductor doping, and metal refining (blanketing agent); Also used as an inert gas in electric lamps and ionization chambers; [ACGIH] Also used in geological dating and cryogenic applications; [Merck Index]

Comments

Simple asphyxiant; Evaporating liquid can cause frostbite; [ICSC]

Exposure Assessment
Explanatory Notes

ACGIH documentation withdrawn in 2013; Refer to Appendix F: Minimal Oxygen Content; [TLVs and BEIs]

Adverse Effects
Other Poison

Simple Asphyxiant

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information

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Chemical Information

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Biomedical References

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Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent:

Processes

Industrial Processes with risk of exposure:

Activities

Activities with risk of exposure: