Tetrahydrofuran CAS No. 109-99-9
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Category：Agrochemicals
Introduction
Tetrahydrofuran (THF)
CAS No.: 109-99-9 | EC No.: 203-726-8
1. Chemical Identification
| Property | Specification |
|---|---|
| IUPAC Name | Oxolane |
| Molecular Formula | C₄H₈O |
| Molecular Weight | 72.11 g/mol |
| Appearance | Clear colorless liquid |
| Density | 0.887 g/mL at 20°C |
| Melting Point | -108°C |
| Boiling Point | 66°C |
| Refractive Index | n<sup>20</sup><sub>D</sub> 1.407 |
| Flash Point | -14°C (closed cup) |
| Explosive Limits | 1.8-11.8 vol% in air |
Synonyms:
THF, Tetramethylene oxide, Oxacyclopentane
2. Key Applications
Industrial Solvent
- Polymer Industry:
✓ PVC cement solvent
✓ Polystyrene processing
✓ Magnetic tape coatings - Chemical Synthesis:
✓ Grignard reactions
✓ Pharmaceutical intermediates
Chemical Intermediate
- Pesticides: Phenylbutyltin synthesis
- Pharmaceuticals:
✓ Progesterone production
✓ Rifamycin processing
Specialty Uses
- Adhesives and coatings
- Laboratory reagent
- Extraction solvent
3. Product Advantages
✔ Excellent Solvency – Dissolves polar/nonpolar compounds
✔ Low Viscosity – Good penetration properties
✔ High Purity Grades – For sensitive applications
4. Physical & Chemical Properties
- Solubility:
- Miscible with water/organic solvents
- Good solvent for resins and polymers
- Stability:
- Forms peroxides on air exposure
- Stable under inert atmosphere
5. Handling & Storage
| Parameter | Requirement |
|---|---|
| Storage Temp | <30°C (explosion-proof area) |
| Packaging | 200L steel drums |
| Shelf Life | 12 months (with stabilizer) |
| Special Notes | Test for peroxides regularly |
6. Safety Information
Danger!
- H225: Highly flammable liquid/vapor
- H302+H312+H332: Harmful if swallowed/in contact skin/inhaled
- H319: Causes serious eye irritation
Protective Measures:
- P210: Keep away from heat/sparks/open flames
- P280: Wear protective gloves/eye protection
- P305+P351+P338: Eye contact rinse procedure
7. Quality Specifications
- Purity: ≥99.9% (GC)
- Water Content: ≤0.05%
- Peroxide Content: ≤10 ppm
Disclaimer:
The above content is for reference and communication only among industry insiders, and does not guarantee its accuracy or completeness. According to relevant laws and regulations and the regulations of this website, units or individuals who purchase related items should obtain valid qualifications and qualification conditions.
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