BENZOFURAN

PRODUCT IDENTIFICATION
CAS NO. 271-89-6

2,3-BENZOFURAN

EINECS NO. 205-982-6
FORMULA C8H6O
MOL WT. 118.13
H.S. CODE

2902.90

TOXICITY

  
SYNONYMS 2,3-Benzofuran; Benzo[b]furan; Coumarone; Cumaron;
2,3-Benzofurfuran; 1-Oxidene; 1-Oxindene

SMILES

 

CLASSIFICATION

 

PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE clear to slightly greenish liquid
MELTING POINT -18 C
BOILING POINT 170 - 173 C
SPECIFIC GRAVITY

1.0913

SOLUBILITY IN WATER Insoluble
pH

 

VAPOR DENSITY  
AUTOIGNITION

 

NFPA RATINGS Health: 1; Flammability: 2; Reactivity: 0

REFRACTIVE INDEX

 

FLASH POINT

50 C

STABILITY Stable under ordinary conditions. Air, light sensitive.

GENERAL DESCRIPTION & APPLICATIONS
2,3-Benzofuran (1-Oxindene) is a clear to slightly greenish liquid ; boils at 173C. It is an oxygen-containing heterocyclic organic compound fused to benzene ring. It is obtained from coal tar distillation. Benzofuran can be prepared by O-alkylation of salicylaldehyde with chloroacetic acid followed by dehydration of the resulting ether. In another method called the "Perkin rearrangement" a coumarin is reacted with an hydroxide Benzofuran is rarely used for any commercial purposes. Rather, the principal industrial use of benzofuran is in the production of thermoplastic resins called coumarone-indene resin. This resin resists corrosion and is used to make paints and adhesives, and rubber compounds.. The resin also provides water resistance and is used in coatings on paper products and fabrics. It is used as an adhesive in food containers and is in some asphalt floor tiles.
  • Indene is an analog without the oxygen atom.
  • Indole is an analog with a nitrogen instead of the oxygen atom.
  • Furan is an analog without the fused benzene ring
  • Aurone contains a benzofuran ring linked with benzylidene at position 2.
  • Dibenzofuran has two benzene rings fused to one furan ring in the middle.
SALES SPECIFICATION

APPEARANCE

 clear to slightly greenish liquid
CONTENT

99.0% min

BOILING POINT 170 - 173 C
TRANSPORTATION
PACKING  
HAZARD CLASS 3 (Packing Group: III)
UN NO. 1993
OTHER INFORMATION
Hazard Symbols: F, Risk Phrases: 45-10, Safety Phrases: 53-45