Indene Chemical Properties
- Melting point:
- −5-−3 °C(lit.)
- Boiling point:
- 181-182 °C(lit.)
- 0.996 g/mL at 25 °C(lit.)
- vapor pressure
- 1.7 hPa (20 °C)
- refractive index
- Flash point:
- 138 °F
- storage temp.
- organic solvents: miscible
- 20(at 25℃)
- Crystalline Powder
- White to pale yellow
- Water Solubility
- Light Sensitive
- Stable, but air and light sensitive; may polymerize upon exposure to light. Typically contains aroung 80 - 100 ppm of p-tert-butylcatechol as inhibitor. Refrigerate. Flammable. Incompatible with strong oxidizing agents.
- CAS DataBase Reference
- 95-13-6(CAS DataBase Reference)
- NIST Chemistry Reference
- EPA Substance Registry System
- Indene (95-13-6)
Indene Usage And Synthesis
Indene (also called 1H-Indene, C9H8) is a flammable polycyclic hydrocarbon. It is a colorless and aromatic smelling liquid. It is used in the synthesis of new C60 derivative (indene-C60 Bisadduct) and to prepare polyindene by the controlled cationic polymerization initiated with cumyl methyl ether/TiCl4 in CH2Cl2. Polyindene is further used to synthesize polyolefins. Indene is also used in the synthesis of istatins, in the production of indene/cumarone thermoplastic resins, and in the production of hydrocarbon resins. These industrial resins, also called indene-coumarone resins, are mainly consumed by the paints & coatings, rubber, and construction industries.
It should be stored in a cool place. The container should be kept tightly closed in a dry and well-ventilated place. Containers which areopened must be carefully resealed and kept upright to prevent leakage. Indene is incompatible with strong oxidizing agents. Recommended storage temperature is 2 - 8°C. Indene is sensitive to light.
 Stephen F. Hahn, Marc A. Hillmyer (2003) High glass transition temperature polyolefins obtained by the catalytic hydrogenation of polyindene, 36, 71-76.
Yellow green clear liquid
Preparation of coumarone-indene resins, intermediate.
indene: A colourless flammable hydrocarbon,C9H8; r.d. 0.996; m.p.–1.8°C; b.p. 182.6°C. Indene is anaromatic hydrocarbon with a five-memberedring fused to a benzenering. It is present in coal tar and isused as a solvent and raw materialfor making other organic compounds.
A colorless liquid derived from coal tar. Fp: -2°C; bp:182°C. Density 0.997 g cm-3. Insoluble in water but soluble in organic solvents.
Indene is combustible (flash point between 140°F and 200°F). Polymerizes and oxidizes on standing in the air. This reaction is accelerated by heating, acids, and catalysts, including peroxides. Has exploded during nitration with a mixture of H2SO4 and HNO3.
Toxic by inhalation.
Shake indene with 6M HCl for 24hours (to remove basic nitrogenous material), then reflux it with 40% NaOH for 2hours (to remove benzonitrile). Fractionally distil, then fractionally crystallise it by partial freezing. The higher-melting portion is converted to its sodium salt by adding a quarter of its weight of sodamide under nitrogen and stirring for 3hours at 120o. Unreacted organic material is distilled off at 120o/1mm. The sodium salts are hydrolysed with water, and the organic fraction is separated by steam disillation, followed by fractional distillation. Before use, the distillate is passed, under nitrogen, through a column of activated silica gel. It turns yellow in air as it readily oxidizes and polymerises. [Russell J Am Chem Soc 78 1041 1956, Beilstein 5 IV 1532.]
Indene Preparation Products And Raw materials
- phenindamine tartrate
- INDENE-1-CARBOXYLIC ACID N-AMYL ESTER
- CINNAMYLIDENE INDENE
- INDENE-5-CARBOXYLIC ACID
- 9-METHYL-2,3,7-TRIHYDROXY-6-FLUORONE SULFATE
- INDENE-MALEIC ANHYDRIDE ADDUCT
- INDENONE ETHYLENE KETAL
- INDENE-1-CARBOXYLIC ACID N-BUTYL ESTER
- DIMETHINDENE MALEATE
- INDENE-1-CARBOXYLIC ACID OCTYL ESTER
- INDENE-1-CARBOXYLIC ACID CYCLOHEXYL ESTER
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