Sulfolane 99% CAS 126-33-0 is high-polar aprotic industrial solvent, colorless crystal which melts above 27℃. It is well-known as selective extraction solvent for aromatic hydrocarbon separation and acid-gas removal in petrochemical and natural‑gas processing industry. TNJ Chemical is a professional manufacturer and exporter since 2001. If you need to buy this product with competitive price, please contact us at sales@tnjchem.com
Product Name: Sulfolane
CAS No: 126-33-0
EC No: 204-783-1
Synonyms: Tetrahydrothiophene-1,1-dioxide, Tetramethylene sulfone
Molecular Formula: C4H8O2S
Molecular Weight: 120.17 g/mol
1. Chemical-Physical Properties
Appearance Colorless crystal / clear oily liquid (above 27℃)
Melting Point 27.4-27.8 ℃
Boiling Point 285 ℃ (partial decomposition)
Density (30℃, g/cm³) 1.261
Refractive Index (30℃) 1.481‑1.483
Flash Point (closed cup) 166 ℃
Solubility Miscible with water, alcohols, aromatics; low solubility for aliphatic paraffinsStability Stable under normal condition; decomposes over 220 ℃, releases SO₂
2. Quality Specification (Industrial Grade / Aromatic-Extraction Grade)
| Test Item | Specification |
|---|---|
| Assay (GC), % ≥ | 99.0 |
| Moisture, % ≤ | 0.10 |
| Color (APHA) ≤ | 20 |
| Acidity (as H₂SO₄), % ≤ | 0.005 |
| Ash, % ≤ | 0.01 |
| Impurity (thiophene etc.) | Meet petro‑chemical extraction requirement |
3. Application
‑ Petrochemical: Selective extraction solvent for benzene, toluene, xylene from hydrocarbon mixtures (aromatic extraction unit).
‑ Gas treatment: Remove H₂S, CO₂ and organic sulfur from natural gas & refinery gas (Sulfinol process).
‑ Fine-chemical: High‑boiling aprotic polar solvent for organic synthesis, polymerization reaction medium.
‑ Other: Spinning solvent for polymer, analytical reagent.
4. Packing, Transportation & Storage
‑ Packing: 250 kg steel drum; IBC tote tank.
‑ Storage: Store in cool dry ventilated warehouse. Keep sealed, avoid high temperature and strong alkali. Prevent moisture absorption.
‑ Shelf-life: 12 months under original sealed condition.
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