Diketene

Modify Date: 2025-08-24 11:58:28

Diketene Structure
Diketene structure
 Common Name Diketene
CAS Number 674-82-8 Molecular Weight 84.073
Density 1.1±0.1 g/cm3 Boiling Point 127.4±0.0 °C at 760 mmHg
Molecular Formula C4H4O2 Melting Point -7.5°C
MSDS Chinese USA Flash Point 34.4±0.0 °C
Symbol GHS02 GHS06
GHS02, GHS06		 Signal Word Danger

 Names

Name Acetyl ketene
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.1±0.1 g/cm3
Boiling Point 127.4±0.0 °C at 760 mmHg
Melting Point -7.5°C
Molecular Formula C4H4O2
Molecular Weight 84.073
Flash Point 34.4±0.0 °C
Exact Mass 84.021126
PSA 26.30000
LogP 0.27
Vapour density 2.9 (vs air)
Vapour Pressure 11.1±0.2 mmHg at 25°C
Index of Refraction 1.450
InChIKey WASQWSOJHCZDFK-UHFFFAOYSA-N
SMILES C=C1CC(=O)O1

 Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
RQ8225000
CHEMICAL NAME :
2-Oxetanone, 4-methylene-
CAS REGISTRY NUMBER :
674-82-8
BEILSTEIN REFERENCE NO. :
0104541
LAST UPDATED :
199710
DATA ITEMS CITED :
15
MOLECULAR FORMULA :
C4-H4-O2
MOLECULAR WEIGHT :
84.08
WISWESSER LINE NOTATION :
T4VOY DHJ CU1

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
Standard Draize test
ROUTE OF EXPOSURE :
Administration onto the skin
SPECIES OBSERVED :
Rodent - rabbit
REFERENCE :
85JCAE "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986 Volume(issue)/page/year: -,301,1986
TYPE OF TEST :
Open irritation test
ROUTE OF EXPOSURE :
Administration onto the skin
SPECIES OBSERVED :
Rodent - rabbit
REFERENCE :
UCDS** Union Carbide Data Sheet. (Union Carbide Corp., 39 Old Ridgebury Rd., Danbury, CT 06817) Volume(issue)/page/year: 2/20/1963
TYPE OF TEST :
Standard Draize test
ROUTE OF EXPOSURE :
Administration onto the skin
SPECIES OBSERVED :
Rodent - rabbit
REFERENCE :
IHFCAY Industrial Hygiene Foundation of America, Chemical and Toxicological Series, Bulletin. (Pittsburgh, PA) 1947-69. Volume(issue)/page/year: 6,1,1967
TYPE OF TEST :
Standard Draize test
ROUTE OF EXPOSURE :
Administration into the eye
SPECIES OBSERVED :
Rodent - rabbit
REFERENCE :
85JCAE "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986 Volume(issue)/page/year: -,301,1986
TYPE OF TEST :
Standard Draize test
ROUTE OF EXPOSURE :
Administration into the eye
SPECIES OBSERVED :
Rodent - rabbit
REFERENCE :
UCDS** Union Carbide Data Sheet. (Union Carbide Corp., 39 Old Ridgebury Rd., Danbury, CT 06817) Volume(issue)/page/year: 2/20/1963
TYPE OF TEST :
Standard Draize test
ROUTE OF EXPOSURE :
Administration into the eye
SPECIES OBSERVED :
Rodent - rabbit
REFERENCE :
IHFCAY Industrial Hygiene Foundation of America, Chemical and Toxicological Series, Bulletin. (Pittsburgh, PA) 1947-69. Volume(issue)/page/year: 6,1,1967 ** ACUTE TOXICITY DATA **
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
560 uL/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
TXAPA9 Toxicology and Applied Pharmacology. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1959- Volume(issue)/page/year: 28,313,1974
TYPE OF TEST :
LCLo - Lowest published lethal concentration
ROUTE OF EXPOSURE :
Inhalation
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
20000 ppm/1H
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
IHFCAY Industrial Hygiene Foundation of America, Chemical and Toxicological Series, Bulletin. (Pittsburgh, PA) 1947-69. Volume(issue)/page/year: 6,1,1967
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
800 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
KODAK* Kodak Company Reports. (343 State St., Rochester, NY 14650) Volume(issue)/page/year: 21MAY1971
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Administration onto the skin
SPECIES OBSERVED :
Rodent - rabbit
DOSE/DURATION :
2830 uL/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
TXAPA9 Toxicology and Applied Pharmacology. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1959- Volume(issue)/page/year: 28,313,1974
TYPE OF TEST :
LC50 - Lethal concentration, 50 percent kill
ROUTE OF EXPOSURE :
Inhalation
SPECIES OBSERVED :
Rodent - guinea pig
DOSE/DURATION :
3 gm/m3/2H
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
85JCAE "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986 Volume(issue)/page/year: -,301,1986
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Administration onto the skin
SPECIES OBSERVED :
Rodent - guinea pig
DOSE/DURATION :
10 mL/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
KODAK* Kodak Company Reports. (343 State St., Rochester, NY 14650) Volume(issue)/page/year: 21MAY1971 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-RUSSIA:STEL 1 mg/m3 JAN 1993

 Safety Information

Symbol GHS02 GHS06
GHS02, GHS06
Signal Word Danger
Hazard Statements H226-H302-H331
Precautionary Statements P261-P301 + P312 + P330-P304 + P340 + P312-P403 + P233-P403 + P235
Personal Protective Equipment Eyeshields;Faceshields;full-face respirator (US);Gloves;multi-purpose combination respirator cartridge (US);type ABEK (EN14387) respirator filter
Hazard Codes Xn:Harmful
Risk Phrases R10;R20
Safety Phrases S3-S36/37-S33-S24/25-S23-S16
RIDADR UN 2929 6.1/PG 2
WGK Germany 2
RTECS RQ8225000
Packaging Group I
Hazard Class 6.1(a)

 Articles14

More Articles
Chemical reactivity and biological activity of diketene.

Chem. Res. Toxicol. 21(10) , 1964-9, (2008)

The alkylating potential of diketene (4-methylene-2-oxetanone), the basic unit of many derivatives of pesticides, chemicals, pharmaceuticals, and dyestuffs, was investigated kinetically. The nucleophi...

Novel approach to 1,5-benzodiazepine-2-ones containing peptoid backbone via one-pot diketene-based Ugi-4CR.

J. Comb. Chem. 12(4) , 497-502, (2010)

An efficient and simple route for preparation of substituted 1,5-benzodiazepine-2-one containing peptoid backbone is presented. The classical Ugi reaction is considerably extended by application of o-...

One-pot multicomponent synthesis of 1-aryl-5-methyl-N-R2-1H-1,2,3-triazole-4-carboxamides: an easy procedure for combinatorial chemistry.

J. Comb. Chem. 11(3) , 481-5, (2009)

A convenient synthetic protocol was elaborated for creation of combinatorial libraries of 1-(R(1)-phenyl)-5-methyl-N-R(2)-1H-1,2,3-triazole-4-carboxamides. As starting materials, commercially availabl...

 Synonyms

ACETYLKETENE
4-Methylidenoxetan-2-on
Acety ketene
Diketene(DK)
4-Methyleneoxetan-2-one
Ketene dimer
4-methylideneoxetan-2-one
EINECS 211-617-1
But-1-ene-1,3-dione
Ketenedimere
ethenone,dimer
MFCD00005173
Diketen
4-Methylene-2-oxetanone
Dikitene
diketene dimer
Diketene
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