Introduction：Basic information about CAS 933-52-8|Tetramethyl-1,3-cyclobutanedione, including its chemical name, molecular formula, synonyms, physicochemical properties, and safety information, etc.
| Common Name | Tetramethyl-1,3-cyclobutanedione |
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| CAS Number | 933-52-8 | Molecular Weight | 140.180 |
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| Density | 1.0±0.1 g/cm3 | Boiling Point | 208.3±15.0 °C at 760 mmHg |
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| Molecular Formula | C8H12O2 | Melting Point | 114-116 °C(lit.) |
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| MSDS | ChineseUSA | Flash Point | 74.3±17.4 °C |
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Names
| Name | Dimethyl Ketene Dimer |
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| Synonym | More Synonyms |
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Chemical & Physical Properties
| Density | 1.0±0.1 g/cm3 |
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| Boiling Point | 208.3±15.0 °C at 760 mmHg |
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| Melting Point | 114-116 °C(lit.) |
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| Molecular Formula | C8H12O2 |
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| Molecular Weight | 140.180 |
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| Flash Point | 74.3±17.4 °C |
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| Exact Mass | 140.083725 |
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| PSA | 34.14000 |
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| LogP | 0.43 |
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| Vapour Pressure | 0.2±0.4 mmHg at 25°C |
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| Index of Refraction | 1.443 |
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| InChIKey | RGCDVHNITQEYPO-UHFFFAOYSA-N |
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| SMILES | CC1(C)C(=O)C(C)(C)C1=O |
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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 DATAACUTE 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
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Safety Information
| Personal Protective Equipment | Eyeshields;Gloves;type N95 (US);type P1 (EN143) respirator filter |
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| Safety Phrases | S24/25 |
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| RIDADR | NONH for all modes of transport |
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| WGK Germany | 3 |
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| RTECS | GU1775000 |
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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 |
