Agent Name

Sulfur hexafluoride

CAS Number

2551-62-4

Formula

F6-S

Major Category

Toxic Gases & Vapors

Synonyms

Elegas; Hexafluorure de soufre [French]; Sulfur fluoride (SF6); Sulfur fluoride (SF6), (OC-6-11)-; Sulfur hexafluoride; [ChemIDplus] UN1080

Category

Simple Asphyxiants

Description

Colorless, odorless gas. [Note: Shipped as a liquefied compressed gas. Condenses directly to a solid upon cooling.]; [NIOSH]

Sources/Uses

Used as a gaseous electric insulator and as a tracer gas to measure ventilation patterns; [ACGIH]

Comments

". . . it seems unlikely that a gas as inert as sulfur hexafluoride would exert any toxic effect in concentrations as low as 1000 ppm. The chief hazard, as with other inert gases, would seem to be asphyxiation as a result of the displacement of air by this heavy gas." [ACGIH] Possible frostbite from contact with liquid; [NIOSH]

Exposure Assessment
Skin Designation (ACGIH)

Insufficient data

TLV (ACGIH)

1000 ppm

PEL (OSHA)

1000 ppm

MAK

1000 ppm

Adverse Effects
Other Poison

Simple Asphyxiant

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Diseases

Occupational diseases associated with exposure to this agent: