- Indene
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- $5.00 / 1KG
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2023-04-14
- CAS:95-13-6
- Min. Order: 1KG
- Purity: 99%
- Supply Ability: 10000kg
- Indene
-
- $1.00 / 1kg
-
2019-07-06
- CAS:95-13-6
- Min. Order: 1kg
- Purity: 96%-99%
- Supply Ability: as request
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| | Indene Chemical Properties |
| Melting point | -5--3 °C (lit.) | | Boiling point | 181-182 °C (lit.) | | density | 0.996 g/mL at 25 °C (lit.) | | vapor pressure | 1.7 hPa (20 °C) | | refractive index | n20/D 1.595(lit.) | | Fp | 138 °F | | storage temp. | 2-8°C | | solubility | organic solvents: miscible | | pka | 20(at 25℃) | | form | Crystalline Powder | | color | White to pale yellow | | Odor Threshold | 0.0038ppm | | Water Solubility | INSOLUBLE | | Sensitive | Light Sensitive | | Merck | 14,4939 | | BRN | 635873 | | Exposure limits | ACGIH: TWA 5 ppm
NIOSH: TWA 10 ppm(45 mg/m3) | | Stability: | 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. | | InChIKey | YBYIRNPNPLQARY-UHFFFAOYSA-N | | LogP | 3.02 at 25℃ and pH6.4 | | CAS DataBase Reference | 95-13-6(CAS DataBase Reference) | | NIST Chemistry Reference | Indene(95-13-6) | | EPA Substance Registry System | Indene (95-13-6) |
| | Indene Usage And Synthesis |
| Description | 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.
| | References | [1] https://en.wikipedia.org/wiki/Indene
[2] https://www.alfa.com/de/catalog/L12665/
[3] Stephen F. Hahn, Marc A. Hillmyer (2003) High glass transition temperature polyolefins obtained by the catalytic hydrogenation of polyindene, 36, 71-76.
| | Chemical Properties | Yellow green clear liquid | | Uses | Preparation of coumarone-indene resins, intermediate. | | Uses | Preparation of coumarone-indene
resins | | Uses | 1H-Indene is a building block that has been used in the synthesis of isatins. It was used in the synthesis of new C60 derivative, indene-C60 bisadduct. It was used in preparing polyindene by the controlled cationic polymerization initiated with cumyl methyl ether/TiCl4 in CH2Cl2. | | Definition | 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. | | Synthesis Reference(s) | Tetrahedron Letters, 18, p. 49, 1977 DOI: 10.1016/S0040-4039(01)92547-X | | General Description | 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. | | Reactivity Profile | 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. | | Hazard | Toxic by inhalation. | | Health Hazard | Indene is expected to be an irritant
of the mucous membranes. | | Purification Methods | 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 |
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