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271-89-6

Name Benzofuran
CAS 271-89-6
EINECS(EC#) 205-982-6
Molecular Formula C8H6O
MDL Number MFCD00005847
Molecular Weight 118.13
MOL File 271-89-6.mol

Chemical Properties

Description
2,3-Benzofuran is a colourless, sweet-smelling, oily liquid made by processing coal into coal oil. It may also be formed during other uses of coal or oil. 2,3-Benzofuran is not used for any commercial purposes, but the part of the coal oil that contains 2,3-benzofuran is made into a plastic called coumarone–indene resin. This resin resists corrosion and is used to make paints and varnishes. 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 some asphalt floor tiles. The resin has been approved for use in food packages and as a coating on citrus fruits. We do not know how often the resin is used or whether any 2,3-benzofuran in the coating or packaging gets into the food. 2,3-Benzofuran may enter the air, water, and soil during its manufacture, use, or storage at hazardous waste sites.
Definition A bicyclic ring compound derived from coal tar naphtha, the parent substance of coumarone-indene resins.
Appearance Colorless to light yellow liqui
Melting point  <-18℃
Boiling point  173-175 °C(lit.)
density  1.095 g/mL at 20 °C(lit.)
refractive index  n20/D 1.567
Fp  133 °F
storage temp.  2-8°C
solubility  soluble in Dichloromethane
form  Crystalline Powder or Crystals
pka 33.2
color  Yellow to green to yellow-brown
Water Solubility  insoluble
Detection Methods HPLC,NMR
Merck  14,1088
BRN  107704
LogP 2.670
CAS DataBase Reference 271-89-6(CAS DataBase Reference)
IARC 2B (Vol. 63) 1995
NIST Chemistry Reference Benzofuran(271-89-6)
EPA Substance Registry System 271-89-6(EPA Substance)

Safety Data

Hazard Codes  Xn,Xi
Risk Statements 
R40:Limited evidence of a carcinogenic effect.
R52:Harmful to aquatic organisms.
R10:Flammable.
Safety Statements 
S36/37:Wear suitable protective clothing and gloves .
S16:Keep away from sources of ignition-No smoking .
RIDADR  UN 1993 3/PG 3
WGK Germany  3
RTECS  DF6423800
10-23
Hazard Note  Irritant
TSCA  Yes
HazardClass  3
PackingGroup  III
HS Code  29329990
Hazardous Substances Data 271-89-6(Hazardous Substances Data)
Toxicity
Isolated from coal oil and used in the manufacture of coumarone-indene resin. This resin is used in paints, glue, etc. and is allowed in food packaging. Little is known about the toxicity of benzofuran to humans but acute toxicity in experimental animals involves liver and kidney failure. Chronic toxicity to animals involves damage to the liver, kidneys, lungs, and stomach. Lifetime administration (oral administration) caused cancer in both rats and mice.

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