Indene (chemical compound)
Structural formula | |||||||||||||||||||
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General | |||||||||||||||||||
Surname | In the | ||||||||||||||||||
other names |
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Molecular formula | C 9 H 8 | ||||||||||||||||||
Brief description |
colorless oil |
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External identifiers / databases | |||||||||||||||||||
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properties | |||||||||||||||||||
Molar mass | 116.16 g · mol -1 | ||||||||||||||||||
Physical state |
liquid |
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density |
0.99 g cm −3 |
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Melting point |
−2 ° C |
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boiling point |
182 ° C |
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Vapor pressure |
1.6 h Pa (20 ° C) |
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solubility |
practically insoluble in water |
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Refractive index |
1.5768 (20 ° C) |
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safety instructions | |||||||||||||||||||
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MAK |
Switzerland: 10 ml m −3 or 45 mg m −3 |
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As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . Refractive index: Na-D line , 20 ° C |
Inden (stress on the final syllable: Ind e n ) is a colorless liquid with an aromatic odor. It belongs to the arenas . The name was in 1888 by Roser from Ind onaphth s formed.
Presentation and extraction
Indene is obtained by distilling coal tar . It is also created when acetylene is heated in the absence of air.
properties
Indene, in particular 2 H indene, polymerizes in the air under room conditions or exposure to light. Therefore 2 H -inds only exist in the form of its derivatives . It smells aromatic, the odor threshold is 0.07 to 0.32 mg / m 3 . Indene is flammable, the flash point is 79 ° C. It is insoluble in water. A MAK value has not been specified for Inden. Indene reacts violently with oxidizing agents and the nitration is explosive.
use
The liquid is used as a solvent and for the production of other organic compounds as well as indene- coumarone resins. Indene also plays an important role as a complex ligand of transition metals in homogeneous catalysis . It is a raw material for azulene .
Individual evidence
- ↑ entry into indenes in CosIng database of the European Commission, accessed on May 18, 2020th
- ↑ Entry on Inden. In: Römpp Online . Georg Thieme Verlag, accessed on December 28, 2014.
- ↑ a b c d e f g Entry on Inden in the GESTIS substance database of the IFA , accessed on February 5, 2017(JavaScript required) .
- ↑ David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Physical Constants of Organic Compounds, pp. 3-302.
- ↑ Swiss Accident Insurance Fund (Suva): Limit values - current MAK and BAT values (search for 95-13-6 or indene (chemical compound) ), accessed on November 2, 2015.