Agent Name

Acetylene

CAS Number

74-86-2

Formula

C2-H2

Major Category

Toxic Gases & Vapors

Synonyms

Acetylen; Acetylene; Ethine; Ethyne; Narcylen; [ChemIDplus] UN1001

Category

Simple Asphyxiants

Description

Colorless gas with a faint, ethereal odor. [Note: Commercial grade has a garlic-like odor. Shipped under pressure dissolved in acetone.] [NIOSH] Vapor density = 0.91 (lighter than air); [HSDB]

Sources/Uses

A compressed gas used in the welding and cutting of metals; Was used as a general anesthetic in the 1920's; [ACGIH]

Comments

Acetylene is an explosive hazard and simple asphyxiant. [LaDou, p. 558] Possible frostbite from contact with liquid; [NIOSH] Acetylene is in the list of "Some volatile substances which may be abused by inhalation" published on the web site of the U.N. International Drug Control Programme, indicating its potential to cause narcosis in workers. [Reference #1]

Reference Link

Volatile Substance Abuse

Exposure Assessment
Skin Designation (ACGIH)

Insufficient data

Odor Threshold Low

226 ppm

Odor Threshold High

2584 ppm

Explanatory Notes

NIOSH REL (ceiling) = 2500 ppm; Odor threshold from AIHA; Flash point = 0 deg F; A simple asphyxiant (See Appendix F.) and explosion hazard; [TLVs and BEIs]

Flammability (NFPA)

4: Burns readily

Adverse Effects
Neurotoxin

CNS Solvent Syndrome

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: