Contact Lens                                                                               Introduction, Process , Companies in the field, Consultant, Patent, News Reports                                                      Primary Information Services                                                        Home. Ordering Information. Contact

         

Information @ a Glance

General

  • Tetrahydrofuran, also known as THF, is a heterocyclic organic compound with the formula (CH2)4O.
  • Tetrahydrofuran is a colorless low-viscosity liquid with a smell similar to diethyl ether.
  • THF is one of the most polar ethers. THF is the fully hydrogenated analog of the aromatic compound furan.
  • THF is an aprotic solvent with a dielectric constant of 7.6.
  • THF is a moderately polar, aprotic solvent that dissolves a wide range of nonpolar and polar compounds.
     

Process

  • THF can be polymerized by strong acids to give a linear polymer called poly(tetramethylene ether) glycol PTMEG, also known as PTMO, polytetramethylene oxide.
  • THF can be synthesized by catalytic hydrogenation of furan.
  • The major industrial process for making THF is the acid-catalyzed dehydration of 1,4-butanediol.
  • Du Pont developed a process for producing THF by oxidizing n-butane to crude maleic anhydride, followed by catalytic hydrogenation of maleic anhydride to THF.
     

Application

  • THF or diethyl ether are often used as solvents for Grignard reagents because of the oxygen atom's ability to coordinate to the magnesium ion component of the Grignard reagent.
  • THF is often used in polymer science to dissolve rubber prior to determining its molecular mass using gel permeation chromatography.
  • THF dissolves PVC, and is the main ingredient in PVC adhesives.
  • THF can be used to liquefy old PVC cement.
     

Report

  • Exposure to THF is most likely to occur in occupational settings through inhalation or by dermal contact.
  • THF has been detected in ambient air, groundwater, drinking water, landfill sludge, and in some common household products.
  • THF is present as vapour where it is degraded by photochemically-produced hydroxyl and nitrate radicals in air.
  • GPC elution curves of Athabasca bitumen in both tetrahydrofuran and tohene obtained using uv detector.

Entrepreneur who want the information such as "Introduction, Process , Companies in the field, Consultant, Patent, News Reports" about Tetrahydrofuran can

                                                                    Order CD-ROM Today

Primary Information Services
 21 Murugappan St, SwamyNagar Ext2, 
Ullagaram, Chennai - 600091, India.
 Phone: 91 44 22421080 
Email : informer@eth.net
Mobile numbers:9940043898, 9444008898  Fax : 91 44 22423753