Tetrahydrofuran (THF)
C₄H₈O · CAS 109-99-9
High-purity THF across eight grades for GPC/SEC polymer molecular weight characterization, Grignard reagent preparation, and solid-state battery polymer electrolyte synthesis. Anhydrous grade (≤30 ppm H₂O) for moisture-sensitive reactions.
Molecular Weight
72.11 g/mol
Boiling Point
66 °C
Density
0.889 g/mL
Molecular Formula
Available Grades
Analytical Specification
Analytical Specification Table
All values represent maximum allowable limits unless noted ≥. A lot-specific Certificate of Analysis (CoA) with ICP-MS, LPC, and GC data is issued for every shipment. Full data packages available on request.
| Parameter | Test Method | Unit | HPLC-G | HPLC | Anhy. | AR |
|---|---|---|---|---|---|---|
| Assay (GC) | GC-FID | % | ≥99.9 | ≥99.9 | ≥99.9 | ≥99.5 |
| Water Content (KF) | Karl Fischer | ppm | ≤20 | ≤30 | ≤30 | ≤300 |
| Peroxide (as H₂O₂) | Iodometric | ppm | ≤1 | ≤1 | ≤1 | ≤10 |
| BHT Stabilizer | GC-FID | ppm | ≤250 | ≤250 | — | ≤250 |
| UV Absorbance 254 nm | UV-Vis | AU | ≤0.01 | ≤0.02 | — | — |
| Residue on Evaporation | Gravimetric | ppm | ≤1 | ≤2 | — | ≤5 |
★ G5 = SEMI C1 Tier D (6N grade). All metal values by ICP-MS. Particle counts by in-line LPC during ISO Class 3 fill. CoA available on request.
Grade Comparison
G1 → G5 Purity Scale
Select the grade that matches your process node and contamination budget. Every grade is available from PureTech with full lot CoA and ICP-MS data.
All grades tested by ICP-MS (28 elements), in-line LPC (ISO Class 3 fill), and Karl Fischer titration. G5 = SEMI C1 Tier D. Full CoA per lot. Request CoA template →
Application Areas
Where Tetrahydrofuran Is Used
Semiconductor Process
- Polymer semiconductor thin-film characterization
- organic photovoltaic (OPV) material research
Laboratory & Analytical
- GPC/SEC mobile phase for polymer MW analysis
- Grignard reagent (RMgX) preparation solvent
- Ring-opening polymerization (ROP) solvent
- HPLC normal-phase mobile phase modifier
- Anionic polymerization solvent
Industrial & Other
- PVC pipe adhesive cement
- polyurethane elastomer synthesis
- pharmaceutical API synthesis
Battery & Energy Storage
Packaging & Supply
Available Container Formats
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