25190-06-1

Basic information

• Product Name: Poly(tetrahydrofuran)
• Synonyms: 4-butanediyl),.alpha.-hydro-.omega.-hydroxy-poly(oxy-1;alpha-hydro-omega-hydroxy-poly(oxy-4-butanediyl);b2000;glycols,polytetramethylene;hiprenemc532;polifurit;poly(butyleneoxide);poly(oxy-1,4-butylene)glycol
• CAS NO: 25190-06-1
• Molecular Formula: C16H33O5X2
• Molecular Weight: 305.43
• EINECS: 203-786-5
• Product Categories: Ethers;Hydrophobic Polymers;Materials Science;Polymer Science;Polymers;Tetrahydrofuran
• Mol File: 25190-06-1.mol
• Article Data: 0

Chemical Properties

• Melting Point: 33-36 °C
• Boiling Point: 195.7oC at 760mmHg
• Flash Point: >230 °F
• Appearance: /
• Density: 1 g/mL at 25 °C
• Vapor Pressure: <0.01 mm Hg ( 25 °C)
• Refractive Index: n20/D 1.465
• Storage Temp.: Store below +30°C.
• Solubility: <10g/l
• CAS DataBase Reference: Poly(tetrahydrofuran)(CAS DataBase Reference)
• NIST Chemistry Reference: Poly(tetrahydrofuran)(25190-06-1)
• EPA Substance Registry System: Poly(tetrahydrofuran)(25190-06-1)

Safety Data

• Hazard Codes: Xi
• Statements: 36/37/38
• Safety Statements: 26-36
• WGK Germany: 1
• RTECS: MD0916000
• Hazardous Substances Data: 25190-06-1(Hazardous Substances Data)

Usage

Chemical Properties

mp 11 - 38 °C 100 - 4,400 mPa.s @ 40 °C

Definition

ChEBI: A macromolecule composed of repeating oxybutylene units.

Preparation

Low molecular weight polymers of tetrahydrofuran were introduced commercially in 1955. The polymers were intended for use in the preparation of flexible polyurethane foams, being terminated by hydroxyl groups: Although these polyethers produced good foams they were rather expensive and were soon displaced by the cheaper propylene oxide-based polyethers. However, these polymers of tetrahydrofuran (commonly called poly(oxytetramethylene)glycol) now find use in the preparation of polyamide, polyester and polyurethane thermoplastic elastomers.Details of the manufacture of polytetrahydrofuran have not been disclosed. Polymerization of tetrahydrofuran can be effected only by cationic initiators. Combinations of metal halides with water are not effective but protic acids (e.g. HCl04) and oxonium salts (e.g. (C2H5）3O+BF4-) are efficient initiators. Polymerization occurs by a ring-opening mechanism involving a tertiary oxonium ion, e.g.

InChI:InChI=1/C8H18O2/c1-3-5-6-10-8(4-2)7-9/h8-9H,3-7H2,1-2H3/t8-/m0/s1