Acetylene
Names
[ CAS No. ]:
74-86-2
[ Name ]:
Acetylene
[Synonym ]:
Welding Gas
MFCD00008567
4-01-00-00939
Ethyne
C2H2
Ethine
vinylene
Acetylen
EINECS 200-816-9
ethenylene
Narcylen
Acetylene
Chemical & Physical Properties
[ Density]:
0.6±0.1 g/cm3
[ Boiling Point ]:
-28 ºC
[ Melting Point ]:
-88°C
[ Molecular Formula ]:
C2H2
[ Molecular Weight ]:
26.037
[ Flash Point ]:
-18 ºC
[ Exact Mass ]:
26.015650
[ LogP ]:
0.37
[ Vapour Pressure ]:
69690.6±0.1 mmHg at 25°C
[ Index of Refraction ]:
1.316
[ Water Solubility ]:
0.106 g/100 mL
MSDS
Toxicological Information
CHEMICAL IDENTIFICATION
- RTECS NUMBER :
- AO9600000
- CHEMICAL NAME :
- Acetylene
- CAS REGISTRY NUMBER :
- 74-86-2
- LAST UPDATED :
- 199712
- DATA ITEMS CITED :
- 22
- MOLECULAR FORMULA :
- C2-H2
- MOLECULAR WEIGHT :
- 26.04
- WISWESSER LINE NOTATION :
- 1UU1
HEALTH HAZARD DATA
ACUTE TOXICITY DATA
- TYPE OF TEST :
- TCLo - Lowest published toxic concentration
- ROUTE OF EXPOSURE :
- Inhalation
- SPECIES OBSERVED :
- Human
- DOSE/DURATION :
- 20 pph
- TOXIC EFFECTS :
- Behavioral - headache Lungs, Thorax, or Respiration - dyspnea
- REFERENCE :
- 34ZIAG "Toxicology of Drugs and Chemicals," Deichmann, W.B., New York, Academic Press, Inc., 1969 Volume(issue)/page/year: -,67,1969
- TYPE OF TEST :
- LCLo - Lowest published lethal concentration
- ROUTE OF EXPOSURE :
- Inhalation
- SPECIES OBSERVED :
- Human
- DOSE/DURATION :
- 50 pph/5M
- TOXIC EFFECTS :
- Details of toxic effects not reported other than lethal dose value
- REFERENCE :
- TABIA2 Tabulae Biologicae. (The Hague, Netherlands) V.1-22, 1925-63. Discontinued. Volume(issue)/page/year: 3,231,1933
- TYPE OF TEST :
- LCLo - Lowest published lethal concentration
- ROUTE OF EXPOSURE :
- Inhalation
- SPECIES OBSERVED :
- Mammal - species unspecified
- DOSE/DURATION :
- 50 pph/5M
- REFERENCE :
- AEPPAE Naunyn-Schmiedeberg's Archiv fuer Experimentelle Pathologie und Pharmakologie. (Berlin, Ger.) V.110-253, 1925-66. For publisher information, see NSAPCC. Volume(issue)/page/year: 138,65,1928 *** REVIEWS *** ACGIH TLV-Simple asphyxiant, NO TWA DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year: TLV/BEI,1997 *** U.S. STANDARDS AND REGULATIONS *** MSHA STANDARD:ASPHYXIANTS/GASES DTLWS* "Documentation of the Threshold Limit Values for Substances in Workroom Air," Supplements. For publisher information, see 85INA8. Volume(issue)/page/year: 3,8,1973 OSHA PEL (Construc):simple asphyxiant - inert gas and vapor CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1926.55,1994 OSHA PEL (Shipyard):Simple asphyxiant - inert gas and vapor CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1915.1000,1993 OSHA PEL (Fed Cont):Simple asphyxiant - inert gas and vapor CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 41,50-204.50,1994 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-ARAB Republic of Egypt:TWA 1 ppm (14 mg/m3) JAN 1993 OEL-AUSTRALIA:Asphyxiant JAN 1993 OEL-BELGIUM:Asphyxiant JAN 1993 OEL-HUNGARY:Asphyxiant JAN 1993 OEL-THE NETHERLANDS:Asphyxiant JAN 1993 OEL-SWITZERLAND:TWA 1000 ppm (1080 mg/m3) JAN 1993 OEL-UNITED KINGDOM:Asphyxiant JAN 1993 OEL IN BULGARIA, COLOMBIA, JORDAN, KOREA check ACGIH TLV OEL IN NEW ZEALAND, SINGAPORE, VIETNAM check ACGIH TLV *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH RECOMMENDED EXPOSURE LEVEL (REL) : NIOSH REL TO ACETYLENE-air:CL 2500 ppm/15M REFERENCE : NIOSH* National Institute for Occupational Safety and Health, U.S. Dept. of Health, Education, and Welfare, Reports and Memoranda. Volume(issue)/page/year: DHHS #92-100,1992 NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 03298 No. of Facilities: 85909 (estimated) No. of Industries: 341 No. of Occupations: 111 No. of Employees: 704679 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 03298 No. of Facilities: 2514 (estimated) No. of Industries: 41 No. of Occupations: 52 No. of Employees: 48962 (estimated) No. of Female Employees: 3072 (estimated)
Safety Information
[ Hazard Codes ]:
F+:Highlyflammable;
[ Risk Phrases ]:
R5
[ Safety Phrases ]:
S9-S16-S33
[ RIDADR ]:
UN 1001
[ Hazard Class ]:
2.1
[ HS Code ]:
2901292000
Precursor & DownStream
Precursor
DownStream
Customs
[ HS Code ]: 2901292000
[ Summary ]:
2901292000 ethyne。supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward)。VAT:17.0%。tax rebate rate:9.0%。MFN tarrif:2.0%。general tariff:45.0%