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Basic Information
| CAS No.: | 147-47-7 |
|---|---|
| Name: | 1,2-Dihydro-2,2,4-trimethylquinoline |
| Molecular Structure: | |
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| Formula: | C12H15 N |
| Molecular Weight: | 173.258 |
| Synonyms: | 1,2-Dihydro-2,2,4-trimethylquinolene;1,2-Dihydro-2,2,4-trimethylquinoline; 2,2,4-Trimethyl-1,2-dihydroquinoline;2,2,4-Trimethyl-1,2-dihydroquinone; Acetone anil; Acetone anil (quinolinederivative); Good-rite 3140; Hydroquin; NSC 4175; Polnox R |
| EINECS: | 205-688-8 |
| Density: | 0.951 g/cm3 |
| Melting Point: | 72 - 94 C |
| Boiling Point: | >315 C (Decomposes) |
| Flash Point: | 115 C |
| Solubility: | Insoluble Miscible in Acetate, Benzene, Monochlorobenzene, Ethanol, Gasoline; Soluble in Chloroform |
| Appearance: | brown powder or flakes |
| Safety: | Moderately toxic by ingestion. When heated to decomposition it emits toxic fumes of NOx. |
| Transport Information: | 20kgs, |
| PSA: | 12.03000 |
| LogP: | 3.43200 |
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1,2-Dihydro-2,2,4-trimethylquinoline
Chemistry
FORMULA:(C12H15N)n (n=2.5 - 3 typical)
MOL WT.: ca 500
H.S. CODE: 3812.30
PHYSICAL STATE: brown solid
MELTING POINT: 72 - 94 °C
BOILING POINT: >315 °C (Decomposes)
SPECIFIC GRAVITY: 1.09
SOLUBILITY IN WATE: Insoluble
SOLVENT SOLUBILITY: Miscible in Acetate, Benzene, Monochlorobenzene, Ethanol, GASOLINE; Soluble in chloroform
MOL WT.: ca 500
H.S. CODE: 3812.30
PHYSICAL STATE: brown solid
MELTING POINT: 72 - 94 °C
BOILING POINT: >315 °C (Decomposes)
SPECIFIC GRAVITY: 1.09
SOLUBILITY IN WATE: Insoluble
SOLVENT SOLUBILITY: Miscible in Acetate, Benzene, Monochlorobenzene, Ethanol, GASOLINE; Soluble in chloroform
Uses
2,2,4-TRIMETHYL-1,2-DIHYDROQUINOLINE is a general purpose antioxidant, stabilizer or polymerization inhibitor. The polymer is useful as an antioxidant for rubber.
Production
2,2,4-TRIMETHYL-1,2-DIHYDROQUINOLINE is effectively prepared by the polymerization of 2,2,4-trimethyl-1,2-dihydroquinoline monomer in the presence of Hydrochloric Acid, the amount of Hydrochloric Acid being 0.2 to 0.5 mole per mole of the total of the monomer and impurity AMINES contained in the monomer, and the concentration of Hydrochloric Acid being from 15 to 25% by weight.
Toxicity Data With Reference
Oral rat : LD50: 2250 mg/kg
Consensus Reports
Reported in EPA TSCA Inventory.
Standards and Recommendations
APPEARANCE OF 2,2,4-TRIMETHYL-1,2-DIHYDROQUINOLINE: brown powder or flakes
MELTING POINT: 80 - 100 °C
HEAT LOSS: 0.3% max
ASH: 0.3% max
INSOLUBLE IN ETHANOL: 0.1% max
MELTING POINT: 80 - 100 °C
HEAT LOSS: 0.3% max
ASH: 0.3% max
INSOLUBLE IN ETHANOL: 0.1% max