Indene

Description

Indene · CAS 95-13-6 · C9H8. UNII 67H8Y6LB8A. Boiling Point: 359 °F at 760 mmHg (NIOSH, 2024); Boiling Point: 181.6 °C 760 MM HG; Boiling Point: 359 °F.

Identification

CAS Registry Number	95-13-6
PubChem CID	7219
Molecular formula	C9H8
IUPAC name	1H-indene
UNII (FDA)	67H8Y6LB8A

Computed Descriptors

Molecular Weight	116.16
XLogP3	2.9
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	0
Rotatable Bond Count	0
Exact Mass	116.062600255
Monoisotopic Mass	116.062600255
Topological Polar Surface Area	0
Heavy Atom Count	9
Formal Charge	0

Physical & Chemical Properties

Boiling Point	359 °F at 760 mmHg (NIOSH, 2024)
Boiling Point	181.6 °C 760 MM HG
Boiling Point	359 °F
Boiling Point	182 °C @760 [mm Hg]
Melting Point	29 °F (NIOSH, 2024)
Melting Point	-1.8 °C
Melting Point	29 °F
Melting Point	-1.5 °C
Flash Point	173 °F (NIOSH, 2024)
Flash Point	173 °F

Physical description & handling notes

• Indene appears as 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.
• Liquid
• Colorless liquid. [Note: A solid below 29 degrees F.]; [NIOSH]
• Colorless liquid derived from coal tar.
• Colorless liquid. [Note: A solid below 29 °F.]
• Colorless liquid

Regulatory Status

Regulatory & Food Contact	FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS
GHS notification summary	0.5% (2 / 400)

GHS Hazard Classification

GHS notification summary	0.5% (2 / 400)
Reported hazard statements	H226 (99.2%), H304 (54.8%), H315 (48.5%), H319 (35%), H411 (47%), H335, H370, H227

Documented Uses

• Used to prepare coumarone-indene resins; [ACGIH]
• Plastic Composites Manufacturing [Category: Industry]
• Used as a comonomer in coumarone and petroleum-derived aromatic hydrocarbon resins. Technical pure indene is used for the production of indan and its derivatives. Esters of indene-1-carboxylic acid, which are effective as acaricides, can be synthesized from indene for use in, eg, collars
• It is composed of a benzene ring fused with a cyclopentene ring.
• ... FROM ACETYLENE OVER ACTIVATED CHARCOAL @ 625 °C ... MFR FROM TETRAHYDRONAPHTHALENE BY PASSING OVER SIO2-AL2O3 CATALYST @ 670 °C
• Pyrolysis residual oils from olefin production contain varying amounts of indene, which can be separated by extractive distillation with N-methyl-2- pyrrolidone or by crystallization. Indene is recovered industrially from dephenolated and debased tar light oil by rectifying distillation followed by crystallization. When the phenol extraction is omitted a highly concentrated indene fraction can also be obtained by azeotropic distillation of an indene- phenol fraction with water, whereby the phenol is separated as a

Synonyms

INDENE; 1H-Indene; 95-13-6; Indonaphthene; Inden; DTXSID8042052; NSC 9270; 67H8Y6LB8A; NSC-9270; DTXCID6022052; CHEBI:41921; RefChem:790898; CHEBI:37910; 202-393-6; MFCD00003777; CHEMBL192812

Frequently Asked Questions

What are the CAS number and molecular formula of Indene?

CAS 95-13-6; molecular formula C9H8; molecular weight — g/mol.

What other names is Indene known by?

INDENE, 1H-Indene, 95-13-6, Indonaphthene, Inden, DTXSID8042052.

What is the regulatory status of Indene?

Documented regulatory listings: FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS.

Is Indene classified as hazardous?

0.5% of GHS notifications report no hazard classification (2 of 400).

What are the key physical properties of Indene?

Boiling Point: 359 °F at 760 mmHg (NIOSH, 2024); Boiling Point: 181.6 °C 760 MM HG; Boiling Point: 359 °F; Boiling Point: 182 °C @760 [mm Hg].

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.