Tetramethyl-1,3-cyclobutanedione

Names

[ CAS No. ]:
933-52-8

[ Name ]:
Tetramethyl-1,3-cyclobutanedione

[Synonym ]:
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

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

MSDS

Click to get detail MSDS

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