248-93-1

Basic information

• Product Name: 13H-indeno[1,2-b]anthracene
• Synonyms: 13H-indeno[1,2-b]anthracene;Einecs 205-962-7
• CAS NO: 248-93-1
• Molecular Formula: C₂₁H₁₄
• Molecular Weight: 266.33586
• EINECS: 205-962-7
• Mol File: 248-93-1.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 489.7°Cat760mmHg
• Flash Point: 242.9°C
• Appearance: /
• Density: 1.229g/cm³
• Vapor Pressure: 2.93E-09mmHg at 25°C
• Refractive Index: 1.764
• CAS DataBase Reference: 13H-indeno[1,2-b]anthracene(CAS DataBase Reference)
• NIST Chemistry Reference: 13H-indeno[1,2-b]anthracene(248-93-1)
• EPA Substance Registry System: 13H-indeno[1,2-b]anthracene(248-93-1)

Safety Data

• Hazardous Substances Data: 248-93-1(Hazardous Substances Data)

Usage

Classification

Polycyclic aromatic hydrocarbon (PAH)

Formation

Incomplete combustion of organic materials (coal, oil, gas)

Presence

Cigarette smoke, vehicle exhaust, industrial emissions

Carcinogenicity

Group 2B carcinogen (IARC)

Health risks

Increased risk of lung, liver, and skin cancer

Exposure

Occupational and environmental settings

Precaution

Efforts to limit exposure to prevent adverse health effects

InChI:InChI=1/C21H14/c1-2-6-15-10-18-13-21-19(12-17(18)9-14(15)5-1)11-16-7-3-4-8-20(16)21/h1-10,12-13H,11H2

Upstream product

• 7321-27-9 2-bromoanthracene 
• 501-65-5 diphenyl acetylene 

Relevant articles and documents

Palladium-Catalyzed Reaction of Haloarenes with Diarylethynes: Synthesis, Structural Analysis, and Properties of Methylene-Bridged Arenes

Fluorenes and methylene-bridged polyarenes were easily and efficiently synthesized from haloarenes (or aryl triflates) and diarylethynes by a one-pot, two-step procedure. This protocol involves the palladium-catalyzed cycloisomerization and a subsequent base-mediated retro-aldol condensation. A major advantage is that the starting materials need not have ortho functional groups to complete the annulation. The backbone of the designed products was enlarged using dihaloarenes, highly π-conjugated haloarenes, or diarylalkynes. The mechanism of the formation of benzo[a]fluorene was investigated. The bowl-shaped structure of methylene-bridged indenocorannulene was verified by X-ray crystallography. The photophysical and electrochemical properties of the products thus prepared were investigated.