| Grade Standard: | Industrial Grade |
|---|---|
| Appearance: | Liquid |
| Certification: | ISO |
| Un: | 1 |
| Synonyms: | Thf |
| CAS: | 109-99-9 |
| Customization: |
|---|
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| Tetrahydrofuran, abbreviated as THF, is a heterocyclic organic compound. It belongs to ethers and is the complete hydrogenation product of aromatic compound furan. Tetrahydrofuran is one of the strongest polar ethers. It is used as a moderately polar solvent in chemical reactions and extraction. It is a colorless and volatile liquid at room temperature and has an odor similar to ether. Soluble in most organic solvents such as water, ethanol, ether, acetone, benzene, etc., and are called "universal solvents". It is partially miscible with water energy at room temperature, and some illegal reagent manufacturers use this to make huge profits from tetrahydrofuran reagent mixed with water. Due to the tendency of THF to form peroxides in storage, industrial products generally add antioxidant BHT. Moisture content <= 0.2%. It has the characteristics of low toxicity, low boiling point and good fluidity. At present, the main domestic manufacturers of tetrahydrofuran include BASF China, Dalian Yizheng (DCJ), Shanxi Sanwei, Sinochem International, PetroChina Qianguo Refinery, etc., and some other PBT plants also have by-products. the sales indexes of tetrahydrofuran in the United States and Europe of LyondellBasell industry company of the United States are: purity 99.90%, chromaticity (APHA)10, moisture 0.03%,THF hydroperoxide 0.005%, total impurity 0.05%, oxidation inhibitor 0.025% ~ 0.035%. The most important use in the polyurethane industry is as a monomer raw material for polytetrahydrofuranediol (PTMEG), which is also one of the main uses of THF. |
Raw materials for spandex synthesis reaction
Tetrahydrofuran itself can be polycondensed (repolymerized by cation-initiated ring opening) to form polytetramethylene ether glycol (PTMEG), also known as tetrahydrofuran homogeneous polyether. PTMEG and toluene diisocyanate (TDI) are made of special rubber with wear resistance, oil resistance, good low temperature performance and high strength. Block polyether polyester elastic material is made of dimethyl terephthalate and 1, 4-butanediol. PTMEG with a relative molecular mass of 2000 and p-methylene bis (4-phenyl) diisocyanate (MDI) are used to prepare polyurethane elastic fibers (spandex, SPANDEX fibers), special rubber and some special purpose coatings.
the most important use of THF is to produce PTMEG. according to rough statistics, more than 80% of THF in the world is used to produce PTMEG, while PTMEG is mainly used to produce elastic spandex fiber. 2. solvent with excellent performance
tetrahydrofuran is a commonly used excellent solvent, especially suitable for dissolving PVC, polyvinylidene chloride and butaniline. it is widely used as a solvent for surface coating, anticorrosive coating, printing ink, magnetic tape and film coating. when used for electroplating aluminum liquid, the thickness of aluminum layer can be controlled arbitrarily and bright. Tape coating, PVC surface coating, cleaning PVC reactor, removal of PVC film, cellophane coating, plastic printing ink, thermoplastic polyurethane coating, adhesive solvent, commonly used in surface coating, protective coating, ink, extractant and surface treatment agent of artificial synthetic leather. 3. used as raw materials for organic synthesis such as pharmaceuticals
used to produce tetrahydrothiophene, 1.4-dichloroethane, 2.3-dichlorotetrahydrofuran, valerolactone, butyrolactone and pyrrolidone, etc. In the pharmaceutical industry, it is used to synthesize Kopiqing, Rifamycin, progesterone and some hormone drugs. Tetrahydrothiophenol is produced by hydrogen sulfide treatment, which can be used as an odor agent (identification additive) in fuel gas and is also the main solvent in the pharmaceutical industry. 4. other uses
chromatographic solvent (gel permeation chromatography), used for natural gas flavoring, acetylene extraction solvent, polymer light stabilizer, etc.
With the wide application of tetrahydrofuran, especially the rapid growth of China's spandex industry in recent years, the demand for PTMEG in China is increasing day by day, and the demand for tetrahydrofuran is also showing a rapid growth trend.
| Name | Tetrahydrofuran |
| Synonyms | THF oxolane Furanidine Tetrahydrofuran Diethylene oxide Furan, tetrahydro- Butane, alpha,delta-oxide Cyclotetramethylene oxide Sodium tri-sec-butylborohydride 1,2,3,4-tetrahydro-9H-fluoren-9-one TETRAMETHYLENE ETHER GLYCOL 2000 POLYMER |
| CAS | 109-99-9 |
| EINECS | 203-726-8 |
| InChI | InChI=1/C13H12O/c14-13-11-7-3-1-5-9(11)10-6-2-4-8-12(10)13/h1,3,5,7H,2,4,6,8H2 |
| InChIKey | WYURNTSHIVDZCO-UHFFFAOYSA-N |
| Molecular Formula | C4H8O |
| Molar Mass | 72.11 |
| Density | 0.887 g/mL at 20 °C |
| Melting Point | -108°C |
| Boling Point | 66 °C |
| Flash Point | 6 °F (-14 ºC) |
| Water Solubility | miscible |
| Solubility | water: soluble |
| Vapor Presure | <0.01 mm Hg ( 25 °C) |
| Vapor Density | 2.5 (vs air) |
| Appearance | Liquid |
| Specific Gravity | 0.89 |
| Color | <10(APHA) |
| Odor | Ethereal, detectable at 2 to 50 ppm |
| Exposure Limit | TLV-TWA 200 ppm (590 mg/m3) (ACGIH,MSHA, and OSHA); STEL 250 ppm(ACGIH); IDLH 20,000 ppm (NIOSH). |
| Maximum wavelength(λmax) | ['λ: 245 nm Amax: ≤0.26', , 'λ: 275 nm Amax: ≤0.046', , 'λ: 315 μm Amax: ≤0.0044'] |
| Merck | 14,9211 |
| BRN | 102391 |
| PH | 7-8 (200g/l, H2O, 20ºC) |
| Storage Condition | Store at +5°C to +30°C. |
| Stability | Stable. Incompatible with halogens, strong oxidizing agents, strong reducing agents, strong bases, oxygen. May generate explosive peroxides in storage if in contact with air. Highly flammable. |
| Sensitive | Air Sensitive & Hygroscopic |
| Explosive Limit | 1.5-12.4%(V) |
| Refractive Index | n20/D 1.465 |
| Physical and Chemical Properties | Characteristics of colorless transparent liquid, ether odor. boiling point 67 ºC freezing point -108 ºC relative density 0.985 refractive index 1.4050 flash point -17 ºC solubility, ketone, benzene, Ester, ether, hydrocarbon miscible. |
| Use | Used as solvent, raw material of organic synthesis |
180KG*80drum, 14.4 MTS/20'FCL
20tons/Isotank
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