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Substance Name: Acetylene
RN: 74-86-2
UNII: OC7TV75O83
InChIKey: HSFWRNGVRCDJHI-UHFFFAOYSA-N

Note

  • The simplest two carbon alkyne with the formula HCCH.

Molecular Formula

  • C2-H2

Molecular Weight

  • 26.0378
 

Classification Codes

Classification Code

  • Human Data

Superlist Classification Code

  • Simple Asphyxiant

Names and Synonyms

Name of Substance

  • Acetylene

MeSH Heading

  • Acetylene

Synonyms

  • Acetylen
  • Acetylene
  • EC 200-816-9
  • EINECS 200-816-9
  • Ethine
  • Ethyne
  • HSDB 166
  • Narcylen
  • UNII-OC7TV75O83

Systematic Names

  • Acetylene
  • Ethyne

Superlist Names

  • Acetylene
  • Acetylene, dissolved
  • Acetylene, dissolved [UN1001] [Flammable gas]
  • Ethyne
  • UN1001

Registry Numbers

CAS Registry Number

  • 74-86-2

FDA UNII

  • OC7TV75O83

Other Registry Number

  • 57113-74-3

System Generated Number

  • 0000074862

Structure Descriptors

InChI

1S/C2H2/c1-2/h1-2H

InChIKey

HSFWRNGVRCDJHI-UHFFFAOYSA-N

Smiles

C#C

Toxicity

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
human LCLo inhalation 50pph/5M (500000ppm)   Tabulae Biologicae. Vol. 3, Pg. 231, 1933.
human TCLo inhalation 20pph (200000ppm) BEHAVIORAL: HEADACHE

LUNGS, THORAX, OR RESPIRATION: DYSPNEA
"Toxicology of Drugs and Chemicals," Deichmann, W.B., New York, Academic Press, Inc., 1969Vol. -, Pg. 67, 1969.
mammal (species unspecified) LCLo inhalation 50pph/5M (500000ppm)   Naunyn-Schmiedeberg's Archiv fuer Experimentelle Pathologie und Pharmakologie. Vol. 138, Pg. 65, 1928.

Physical Properties

Physical Property Value Units Temp (deg C) Source
Melting Point -8.07E+01 deg C   EXP
Boiling Point -8.47E+01 deg C   EXP
log P (octanol-water) 0.37 (none)   EXP
Water Solubility 1200 mg/L 20 EXP
Vapor Pressure 5240 mm Hg 25 EXP
Henry's Law Constant 0.022 atm-m3/mole 25 EST
Atmospheric OH Rate Constant 8.15E-13 cm3/molecule-sec 25 EXP

Physical property data is provided to ChemIDplus by SRC, Inc.