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Chemical Sampling Information (CSI)
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General Description

OSHA IMIS Code Number: 0240

Chemical Abstracts Service (CAS) Registry Number: 7440-37-1

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: CF2300000

Chemical Description and Physical Properties:

odorless, colorless, liquified gas
molecular weight: 39.95
molecular formula: Ar
boiling point: -185.9°C
melting point: -189.2°C

Exposure Limits

OSHA Permissible Exposure Limit (PEL):

Maritime: 29 CFR 1915.1000 Table Z-Shipyards -- Simple asphyxiants. The limiting factor is the available oxygen which shall be at least 18 percent and be within the requirements addressing explosion in subpart B of part 1915.

American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): Simple Asphyxiant

Health Factors

Potential Symptoms: Dizziness, unconsciousness, asphyxia; skin, eye frostbite (on contact with liquid).

Health Effects: Asphyxiation (HE17)

Affected Organs: CNS

Notes:

  1. Six fatalities from argon-induced asphyxia were reported to OSHA during 2001-2002.

Literature Basis:

  • International Chemical Safety Cards (WHO/IPCS/ILO): Argon.

Date Last Revised: 07/28/2003

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