Benzofuran
- Product Name
- Benzofuran
- CAS No.
- 271-89-6
- Chemical Name
- Benzofuran
- Synonyms
- Coumarone;2,3-BENZOFURAN;1-BENZOFURAN;CUMARONE;BENZO[B]FURAN;BENZOFURANE;Cumaron;coumaron;1-oxidene;BENZOFURAN
- CBNumber
- CB8853413
- Molecular Formula
- C8H6O
- Formula Weight
- 118.14
- MOL File
- 271-89-6.mol
Benzofuran Property
- Melting point:
- <-18℃
- Boiling point:
- 173-175 °C(lit.)
- Density
- 1.095 g/mL at 20 °C(lit.)
- refractive index
- n20/D 1.567
- Flash point:
- 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
- Merck
- 14,1088
- BRN
- 107704
- LogP
- 2.670
- CAS DataBase Reference
- 271-89-6(CAS DataBase Reference)
- NIST Chemistry Reference
- Benzofuran(271-89-6)
- IARC
- 2B (Vol. 63) 1995
- EPA Substance Registry System
- Benzofuran (271-89-6)
Safety
- Hazard Codes
- Xn,Xi
- Risk Statements
- 40-52-10
- Safety Statements
- 36/37-16
- RIDADR
- UN 1993 3/PG 3
- WGK Germany
- 3
- RTECS
- DF6423800
- F
- 10-23
- Hazard Note
- Irritant
- TSCA
- Yes
- HazardClass
- 3
- PackingGroup
- III
- HS Code
- 29329900
- 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.
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Warning
- Hazard statements
-
H226Flammable liquid and vapour
H351Suspected of causing cancer
- Precautionary statements
-
P201Obtain special instructions before use.
P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P308+P313IF exposed or concerned: Get medical advice/attention.
N-Bromosuccinimide Price
- Product number
- B8002
- Product name
- 2,3-Benzofuran
- Purity
- 99%
- Packaging
- 5g
- Price
- $57.8
- Updated
- 2024/03/01
- Product number
- 43042
- Product name
- 2,3-Benzofuran
- Purity
- analytical standard
- Packaging
- 1ml
- Price
- $73.5
- Updated
- 2022/05/15
- Product number
- B0060
- Product name
- 2,3-Benzofuran
- Purity
- >99.0%(GC)
- Packaging
- 5g
- Price
- $31
- Updated
- 2024/03/01
- Product number
- B0060
- Product name
- 2,3-Benzofuran
- Purity
- >99.0%(GC)
- Packaging
- 25g
- Price
- $90
- Updated
- 2024/03/01
- Product number
- A15225
- Product name
- Benzo[b]furan, 99+%
- Packaging
- 10g
- Price
- $62.65
- Updated
- 2024/03/01
Benzofuran Chemical Properties,Usage,Production
Chemical Properties
2,3-Benzofuran is a colorless, 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 fl oor 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. Breathing contaminated air or touching the chemical in the workplace is the source of human exposure.
Uses
As an intermediate in the polymerization of coumarone-indene resins found in various corrosion-resistant coatings such as paints and varnishes; in water-resistant coatings for paper products and fabrics; in adhesives for use in food containers
Uses
Benzo[b]furan is used in the manufacture of coumarone-indene resin. It has been used to make floor tiles and other products. It is also used as a coating on grapefruit, lemons, lirnes, oranges, tangelos and tangerines and in the production of COITosion-resistant paints and varnishes, in water-resistant coatings on paper products and fabrics and as adhesives in food containers.
Uses
manufacture of coumarone-indene resins.
Definition
A bicyclic ring compound derived from coal tar naphtha, the parent substance of coumarone-indene resins.
Synthesis Reference(s)
The Journal of Organic Chemistry, 44, p. 28, 1979 DOI: 10.1021/jo01315a008
General Description
Clear oily yellow liquid with an aromatic odor.
Air & Water Reactions
Highly flammable. May be sensitive to prolonged exposure to air. Very slightly water soluble.
Reactivity Profile
Benzofuran slowly polymerizes on standing. Benzofuran may be sensitive to prolonged exposure to air. Benzofuran is polymerized by H2SO4.
Hazard
Possible carcinogen.
Health Hazard
ACUTE/CHRONIC HAZARDS: When heated to decomposition Benzofuran emits acrid and irritating smoke and fumes.
Health Hazard
Rats and mice that ingested high levels of 2,3-benzofuran over a short time had liver and kidney damage. Those exposed over a long time to moderate levels had liver, kidney, lung, and stomach damage. In one study, the ability of animals to reproduce was not affected. We do not know if people will experience health effects similar to those seen in animals.
Fire Hazard
Benzofuran is combustible.
Carcinogenicity
Benzofuran was not mutagenic in bacterial assays but did cause chromosomal aberrations and sister chromatid exchanges in cultured rodent cells.
Purification Methods
Benzofuran is steam distilled, dissolved in Et2O, washed with 5% aqueous NaOH, saturated NaCl, dried (Na2SO4), evaporated and redistilled. UV: max 245, 275, 282nm (log 4.08, 3.45, 3.48). The picrate has m 102-103o. [Burgstahler & Worden Org Synth Coll Vol V 251 1973, NMR: Black & Heffernan Aust J Chem 18 353 1965, Beilstein 17/2 V 3.]
Benzofuran Preparation Products And Raw materials
Raw materials
Preparation Products
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View Lastest Price from Benzofuran manufacturers
- Product
- Benzofuran 271-89-6
- Price
- US $0.00/KG
- Min. Order
- 1KG
- Purity
- 98%
- Supply Ability
- 100KG
- Release date
- 2019-05-25