99.5% Dipropylene glycol
Price:Negotiable
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Description
Additional Information
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Category
Polyol Series
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Describe
Tetraethylene glycol (TEG-4 or TEG?) is a colorless, odorless, viscous polyol compound. It is a type of polyethylene glycol ether (oligoether) with good hygroscopicity, thermal stability and solubility. It is widely used in solvents, lubricants, gas dehydrating agents, surfactant raw materials and other fields.
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Cas No.
31692-85-0
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Purity
99.5%
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Synonym(s)
TEG-4 ； TEG?
Physical and chemical properties
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Physical and Chemical Properties
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1. Chemical Identity
- Chemical Name: Tetraethylene glycol
- IUPAC Name: 2-[2-[2-(2-Hydroxyethoxy)ethoxy]ethoxy]ethan-1-ol
- Synonyms: TEG-4, 3,6,9-Trioxaundecane-1,11-diol
- CAS Number: 112-60-7
- EC Number: 203-989-9
- Molecular Formula: C8?H18?O5?
- Molecular Weight: 194.23 g/mol
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2. Physical Properties
- Appearance: Clear, colorless, viscous, hygroscopic liquid.
- Odor: Practically odorless.
- Melting Point: -6 °C (21 °F)
- Boiling Point: 327-328 °C (621-622 °F) at 1013 hPa
- Density: 1.125 g/cm³ at 20 °C
- Solubility:
- In Water: Miscible (soluble in all proportions).
- In Organic Solvents: Soluble in alcohol and acetone. Insoluble in ether, benzene, and most hydrocarbons.
- Vapor Pressure: <0.01 hPa at 20 °C
- Vapor Density: 6.7 (Air = 1)
- Viscosity: 61.2 mPa·s at 20 °C
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3. Chemical Properties and Stability
- Stability: Stable under normal conditions. Hygroscopic (absorbs moisture from the air).
- Incompatibilities: Incompatible with strong oxidizing agents (e.g., potassium permanganate, perchloric acid), strong acids, and strong bases.
- Hazardous Decomposition Products: Combustion may produce toxic fumes of carbon monoxide (CO) and carbon dioxide (CO2?).
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4. Other Key Data
- Flash Point: 185 °C (365 °F) - Closed cup
- Autoignition Temperature: 350 °C (662 °F)
- Explosive Limits:
- Lower Explosive Limit (LEL): 0.7 % (V)
- Upper Explosive Limit (UEL): 7.7 % (V)
- Refractive Index (n20/D): ~1.460
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1. Chemical Identity
| Industry Category | Chemicals |
|---|---|
| Product Category | Polyol Series |
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