Tetramethyl-1,3-cyclobutanedione

Modify Date: 2025-08-22 18:51:40

Tetramethyl-1,3-cyclobutanedione Structure
Tetramethyl-1,3-cyclobutanedione structure
 Common Name Tetramethyl-1,3-cyclobutanedione
CAS Number 933-52-8 Molecular Weight 140.180
Density 1.0±0.1 g/cm3 Boiling Point 208.3±15.0 °C at 760 mmHg
Molecular Formula C8H12O2 Melting Point 114-116 °C(lit.)
MSDS Chinese USA Flash Point 74.3±17.4 °C

 Names

Name Dimethyl Ketene Dimer
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.0±0.1 g/cm3
Boiling Point 208.3±15.0 °C at 760 mmHg
Melting Point 114-116 °C(lit.)
Molecular Formula C8H12O2
Molecular Weight 140.180
Flash Point 74.3±17.4 °C
Exact Mass 140.083725
PSA 34.14000
LogP 0.43
Vapour Pressure 0.2±0.4 mmHg at 25°C
Index of Refraction 1.443

 Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
GU1775000
CHEMICAL NAME :
1,3-Cyclobutanedione, 2,2,4,4-tetramethyl-
CAS REGISTRY NUMBER :
933-52-8
LAST UPDATED :
199701
DATA ITEMS CITED :
2
MOLECULAR FORMULA :
C8-H12-O2
MOLECULAR WEIGHT :
140.20
WISWESSER LINE NOTATION :
L4V CVTJ B1 B1 D1 D1

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Subcutaneous
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
308 mg/kg/77W-I
TOXIC EFFECTS :
Tumorigenic - neoplastic by RTECS criteria Tumorigenic - tumors at site of application
REFERENCE :
JNCIAM Journal of the National Cancer Institute. (Washington, DC) V.1-60, 1940-78. For publisher information, see JJIND8. Volume(issue)/page/year: 46,143,1971

 Safety Information

Personal Protective Equipment Eyeshields;Gloves;type N95 (US);type P1 (EN143) respirator filter
Safety Phrases S24/25
RIDADR NONH for all modes of transport
WGK Germany 3
RTECS GU1775000

 Synonyms

1,3-Cyclobutanedione, 2,2,4,4-tetramethyl-
EINECS 213-269-6
Tetramethylcyclobutane-1,3-dione
2,2,4,4-Tetramethyl-1,3-cyclobutanedione
2,2,4,4-tetramethylcyclobutane-1,3-dione
Tetramethyl-1,3-cyclobutanedione
MFCD00001331
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Chemsrc provides Tetramethyl-1,3-cyclobutanedione(CAS#:933-52-8) MSDS, density, melting point, boiling point, structure, formula, molecular weight etc. Articles of Tetramethyl-1,3-cyclobutanedione are included as well.>> amp version: Tetramethyl-1,3-cyclobutanedione

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