99.5% Tetraethylene glycol
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Description
Additional Information
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Category
Polyol Series
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Describe
Tetrahydrofuran (THF) is a colorless, volatile, polar aprotic cyclic ether solvent (molecular formula C4H8O) with an ether-like odor. It is miscible with water and most organic solvents and is known as a universal solvent. It is widely used in organic synthesis, polymer dissolution and the pharmaceutical field.
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Cas No.
109-99-9
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Purity
99.9%
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Synonym(s)
THF
Physical and chemical properties
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1.1. Chemical Identity
- Chemical Name: Tetrahydrofuran
- IUPAC Name: Oxolane
- Synonyms: THF; Diethylene oxide; 1,4-Epoxybutane; Tetramethylene oxide.
- CAS Number: 109-99-9
- EC Number: 203-726-8
- Molecular Formula: $C_4H_8O$
- Molecular Weight: 72.11 g/mol
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1.2. Physical Properties
- Appearance: Clear, colorless, volatile liquid.
- Odor: Strong, ethereal, acetone-like odor.
- Melting Point: -108.5 °C (-163.3 °F)
- Boiling Point: 66 °C (150.8 °F) at 1013 hPa
- Density: 0.889 g/cm³ at 20 °C
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Solubility:
- In Water: Miscible (completely soluble).
- In Organic Solvents: Miscible with most organic solvents (e.g., ethanol, diethyl ether, acetone, benzene, chloroform).
- Vapor Pressure: 170 hPa at 20 °C
- Vapor Density: 2.49 (Air = 1)
- Viscosity: 0.48 mPa·s at 20 °C
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1.3. Chemical Properties and Stability
- Stability: Stable under recommended storage conditions. Note: Forms explosive peroxides upon exposure to air and light if not inhibited.
- Incompatibilities: Incompatible with strong oxidizing agents, strong acids, strong bases, and oxygen. Reacts violently with lithium aluminum hydride and sodium aluminum hydride.
- Hazardous Polymerization: May occur in the presence of cationic initiators.
- Hazardous Decomposition Products: Thermal decomposition can produce carbon oxides ($CO, CO_2$) and potentially explosive peroxides.
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1.4. Other Key Data
- Flash Point: -14.4 °C (6.1 °F) - Closed cup.
- Autoignition Temperature: 321 °C (610 °F)
- Explosive Limits: * Lower Explosive Limit (LEL): 2.0 % (V)
- Upper Explosive Limit (UEL): 11.8 % (V)
- Refractive Index: ~1.407
| Industry Category | Chemicals |
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| Product Category | Polyol Series |
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