Indene (chemical compound)

Structural formula
General
Surname	In the
other names	1 H indexes; Indonaphthene; Benzocyclopentadiene; INDENE ( INCI ) ;
Molecular formula	C 9 H 8
Brief description	colorless oil
External identifiers / databases
EC number	202-393-6
ECHA InfoCard	100.002.176
PubChem	7219
ChemSpider	6949
Wikidata	Q421008
properties
Molar mass	116.16 g · mol -1
Physical state	liquid
density	0.99 g cm −3
Melting point	−2 ° C
boiling point	182 ° C
Vapor pressure	1.6 h Pa (20 ° C)
solubility	practically insoluble in water
Refractive index	1.5768 (20 ° C)
safety instructions
H and P phrases	H: 226-304
	P: 301 + 310-331
MAK	Switzerland: 10 ml m −3 or 45 mg m −3
	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.

[CosIng-1] try into indenes in CosIng database of the European Commission, accessed on May 18, 2020th

[2] Entry on Inden. In: Römpp Online . Georg Thieme Verlag, accessed on December 28, 2014.

[GESTIS-3] ↑ ^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) .

[CRC90_3_302-4] 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.

[5] 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.