ketene

Modify Date: 2025-08-27 12:34:12

ketene Structure
ketene structure
Common Name ketene
CAS Number 463-51-4 Molecular Weight 42.03670
Density 0.712 g/cm3 Boiling Point -56ºC
Molecular Formula C2H2O Melting Point -150ºC
MSDS N/A Flash Point N/A

 Names

Name ethenone
Synonym More Synonyms

 Chemical & Physical Properties

Density 0.712 g/cm3
Boiling Point -56ºC
Melting Point -150ºC
Molecular Formula C2H2O
Molecular Weight 42.03670
Exact Mass 42.01060
PSA 17.07000
LogP 0.00400
Vapour Pressure 12600mmHg at 25°C
Index of Refraction 1.303

 Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
OA7700000
CHEMICAL NAME :
Ketene
CAS REGISTRY NUMBER :
463-51-4
LAST UPDATED :
199712
DATA ITEMS CITED :
30
MOLECULAR FORMULA :
C2-H2-O
MOLECULAR WEIGHT :
42.04
WISWESSER LINE NOTATION :
OCU1

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LCLo - Lowest published lethal concentration
ROUTE OF EXPOSURE :
Inhalation
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
23 ppm/30M
TOXIC EFFECTS :
Behavioral - convulsions or effect on seizure threshold Lungs, Thorax, or Respiration - dyspnea
REFERENCE :
JIHTAB Journal of Industrial Hygiene and Toxicology. (Cambridge, MA) V.18-31, 1936-49. For publisher information, see AEHLAU. Volume(issue)/page/year: 31,209,1949
TYPE OF TEST :
LCLo - Lowest published lethal concentration
ROUTE OF EXPOSURE :
Inhalation
SPECIES OBSERVED :
Primate - monkey
DOSE/DURATION :
200 ppm/10M
TOXIC EFFECTS :
Sense Organs and Special Senses (Eye) - ptosis Lungs, Thorax, or Respiration - acute pulmonary edema Lungs, Thorax, or Respiration - other changes
REFERENCE :
JIHTAB Journal of Industrial Hygiene and Toxicology. (Cambridge, MA) V.18-31, 1936-49. For publisher information, see AEHLAU. Volume(issue)/page/year: 31,209,1949
TYPE OF TEST :
LCLo - Lowest published lethal concentration
ROUTE OF EXPOSURE :
Inhalation
SPECIES OBSERVED :
Mammal - cat
DOSE/DURATION :
750 ppm/10M
TOXIC EFFECTS :
Lungs, Thorax, or Respiration - acute pulmonary edema Lungs, Thorax, or Respiration - other changes Gastrointestinal - changes in structure or function of salivary glands
REFERENCE :
JIHTAB Journal of Industrial Hygiene and Toxicology. (Cambridge, MA) V.18-31, 1936-49. For publisher information, see AEHLAU. Volume(issue)/page/year: 31,209,1949
TYPE OF TEST :
LCLo - Lowest published lethal concentration
ROUTE OF EXPOSURE :
Inhalation
SPECIES OBSERVED :
Rodent - rabbit
DOSE/DURATION :
53 ppm/2H
TOXIC EFFECTS :
Lungs, Thorax, or Respiration - acute pulmonary edema Lungs, Thorax, or Respiration - other changes
REFERENCE :
JIHTAB Journal of Industrial Hygiene and Toxicology. (Cambridge, MA) V.18-31, 1936-49. For publisher information, see AEHLAU. Volume(issue)/page/year: 31,209,1949
TYPE OF TEST :
LCLo - Lowest published lethal concentration
ROUTE OF EXPOSURE :
Inhalation
SPECIES OBSERVED :
Rodent - guinea pig
DOSE/DURATION :
53 ppm/2H
REFERENCE :
JIHTAB Journal of Industrial Hygiene and Toxicology. (Cambridge, MA) V.18-31, 1936-49. For publisher information, see AEHLAU. Volume(issue)/page/year: 31,209,1949 *** REVIEWS *** ACGIH TLV-STEL 2.6 mg/m3 (1.5 ppm) 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 ACGIH TLV-TWA 0.86 mg/m3 (0.5 ppm) 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-air:TWA 0.5 ppm (0.9 mg/m3) 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: 3,143,1971 OSHA PEL (Gen Indu):8H TWA 0.5 ppm (0.9 mg/m3) CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1910.1000,1994 OSHA PEL (Construc):8H TWA 0.5 ppm (0.9 mg/m3) 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):8H TWA 0.5 ppm (0.9 mg/m3) 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):8H TWA 0.5 ppm (0.9 mg/m3) 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 0.5 ppm (0.9 mg/m3) JAN 1993 OEL-AUSTRALIA:TWA 0.5 ppm (0.9 mg/m3);STEL 1.5 ppm (3 mg/m3) JAN 1993 OEL-BELGIUM:TWA 0.5 ppm (0.89 mg/m3);STEL 1.5 ppm (2.6 mg/m3) JAN 1993 OEL-DENMARK:TWA 0.5 ppm (0.9 mg/m3) JAN 1993 OEL-FINLAND:STEL 0.5 ppm (0.9 mg/m3) JAN 1993 OEL-FRANCE:TWA 0.5 ppm (0.9 mg/m3) JAN 1993 OEL-GERMANY:TWA 0.5 ppm (0.9 mg/m3) JAN 1993 OEL-THE NETHERLANDS:TWA 0.5 ppm (0.9 mg/m3) JAN 1993 OEL-THE PHILIPPINES:TWA 0.5 ppm (0.9 mg/m3) JAN 1993 OEL-SWITZERLAND:TWA 0.5 ppm (0.9 mg/m3);STEL 1 ppm (1.8 mg/m3) JAN 1993 OEL-TURKEY:TWA 0.5 ppm (0.9 mg/m3) JAN 1993 OEL-UNITED KINGDOM:TWA 0.5 ppm (0.9 mg/m3);STEL 1.5 ppm 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 KETENE-air:10H TWA 0.5 ppm;STEL 1.5 ppm 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 - 41840 No. of Facilities: 33 (estimated) No. of Industries: 1 No. of Occupations: 1 No. of Employees: 66 (estimated)

 Safety Information

RIDADR UN 1955
Hazard Class 2.3
HS Code 2914190090

 Synthetic Route

 Customs

HS Code 2914190090
Summary 2914190090 other acyclic ketones without other oxygen function。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:5.5%。General tariff:30.0%

 Synonyms

ketene
carbometene
oxoethylene
Ethen-1-one
ethylene-oxide
Keten
methylene ketone
methyleneoxaethylene
Carbomethene
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