95-13-6

Name	Indene
CAS	95-13-6
EINECS(EC#)	202-393-6
Molecular Formula	C9H8
MDL Number	MFCD00003777
Molecular Weight	116.16
MOL File	95-13-6.mol

Chemical Properties

Appearance	Yellow green clear liquid
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
form	Crystalline Powder
pka	20(at 25℃)
color	White to pale yellow
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.
Odor Threshold	0.0038ppm
Water Solubility	INSOLUBLE
Sensitive	Light Sensitive
Merck	14,4939
BRN	635873
InChIKey	YBYIRNPNPLQARY-UHFFFAOYSA-N
Uses	Preparation of coumarone-indene resins, intermediate. less more
CAS DataBase Reference	95-13-6(CAS DataBase Reference)
NIST Chemistry Reference	Indene(95-13-6)
Storage Precautions	Store under nitrogen
EPA Substance Registry System	95-13-6(EPA Substance)

Safety Data

Hazard Codes	Xn
Risk Statements	R10:Flammable. R65:Harmful: May cause lung damage if swallowed. less more
Safety Statements	S23:Do not breathe gas/fumes/vapor/spray (appropriate wording to be specified by the manufacturer) . S24/25:Avoid contact with skin and eyes . S62:If swallowed, do not induce vomiting: seek medical advice immediately and show this container or label . less more
RIDADR	UN 3295 3/PG 3
WGK Germany	1
RTECS	NK8225000
F	8
TSCA	Yes
HazardClass	3
PackingGroup	III
HS Code	29029090
Hazardous Substances Data	95-13-6(Hazardous Substances Data)

Raw materials And Preparation Products

Hazard Information

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.

Chemical Properties

Yellow green clear liquid

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

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.]

Questions And Answer

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95-13-6

Chemical Properties

Safety Data

Raw materials And Preparation Products

Raw materials

Preparation Products

Hazard Information

General Description

Reactivity Profile

Hazard

Chemical Properties

Definition

Synthesis Reference(s)

Health Hazard

Purification Methods

Questions And Answer

Description

References

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Well-known Reagent Company Product Information

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