Product Description
Tetraethylene Glycol (TTEG) is a high-purity polyether diol with the molecular formula HO(CH₂CH₂O)₄H (C₈H₁₈O₅, CAS 112-60-7). This transparent, colorless, practically odorless liquid is characterized by its moderate viscosity, low volatility, and hygroscopic properties—the highest molecular weight member of the common ethylene glycol oligomer series produced commercially. TTEG offers a higher boiling point (327°C), higher molecular weight (194.23 g/mol), and lower hygroscopicity compared to triethylene glycol, making it the preferred choice for applications requiring these enhanced properties. The compound is completely miscible with water and many organic solvents including ethanol, acetone, acetic acid, glycerin, pyridine, aldehydes, carbon tetrachloride, and diethyl ether, while remaining immiscible with oils, benzene, toluene, fats, and aliphatic hydrocarbons. The terminal hydroxyl groups undergo standard alcohol chemistry, enabling conversion to a wide variety of derivatives including esters, ethers, aldehydes, amines, and organic esters—providing exceptional versatility as a chemical intermediate, plasticizer, solvent, and processing aid.
- Highest Boiling Point in Series: 327°C boiling point exceeds triethylene glycol (288°C), enabling use in higher-temperature applications with minimal volatility losses.
- Lower Hygroscopicity: Reduced moisture absorption compared to lower glycols allows better performance in humidity-sensitive formulations.
- Excellent Solvency: Complete miscibility with water and broad organic solvent compatibility provides versatile dissolution and coupling capabilities.
- Chemical Versatility: Terminal hydroxyl groups enable derivatization to esters, ethers, amines, and other functional compounds for specialty chemical synthesis.
Applications
Natural Gas Dehydration
Gas Processing
Plasticizer
Polyester Resin Production
Unsaturated Polyester Resins
Nitrocellulose Solvent
Lacquers & Coatings
Hydraulic Fluids
Chemical Intermediate
Ink Manufacturing
Dye Production
Textile Lubricant Formulations
Coupling Agent
Tetraethylene Glycol Methacrylate Synthesis
Surface Modification (Protein-Resistant Coatings)
High-Temperature Reactions
Separation Processes
Hydrocarbon Purification
Heat Transfer Fluids
Lubricant Formulations
Specialty Chemical Manufacturing
Benefits
High Boiling Point
Low Volatility
Excellent Thermal Stability
Broad Solvent Compatibility
Complete Water Miscibility
Versatile Chemical Intermediate
Lower Hygroscopicity than TEG
Good Plasticizing Properties
Consistent Quality
Low Toxicity Profile
Non-Carcinogenic (not listed by IARC)
Multiple Packaging Options
Domestic Availability
Product Availability
500 mL
2500 mL
Drum
IBC Tote
Bulk
Product Data
| Property | Test Method | Value |
| Appearance | Visual | Clear, Colorless to Straw-Colored Liquid |
| Odor | — | Practically Odorless / Mild |
| Chemical Name | IUPAC | 2-[2-[2-(2-Hydroxyethoxy)ethoxy]ethoxy]ethanol |
| Synonyms | — | Tetraglycol, TTEG, T4EG, TetraEG, Hi-Dry |
| CAS Number | — | 112-60-7 |
| EC Number (EINECS) | — | 203-989-9 |
| Molecular Formula | — | C₈H₁₈O₅ |
| Molecular Weight | — | 194.23 g/mol |
| Purity | — | 99% minimum (typical) |
| pH | — | ~8.5 |
| Specific Gravity @ 20/20°C | — | 1.125 |
| Bulk Density | — | 9.4 lb/gal @ 20°C |
| Refractive Index @ 20°C | — | 1.459 |
| Boiling Point @ 760 mmHg | — | 327–328°C (621°F) |
| Melting Point / Freezing Point | — | -4°C (25°F) |
| Flash Point (PMCC) | ASTM D 93 | 193°C (379°F) |
| Vapor Pressure @ 20°C | — | <0.01 mmHg |
| Vapor Density (Air = 1) | — | 6.7 |
| Viscosity @ 20°C | — | 61.9 mPa·s (cP) |
| Water Solubility | — | Miscible (complete) |
| NFPA 704 Rating | — | Health 1, Flammability 1, Instability 0 |
| RTECS Number | — | XC2100000 |
| HS Code | — | 2909 49 80 |
| TSCA Status | — | Listed |
Note: Tetraethylene glycol is hygroscopic and will absorb atmospheric moisture; store in tightly sealed containers to maintain product quality. Incompatible with strong oxidizing agents and strong bases—avoid contact with these materials. TTEG may attack some forms of plastics; verify compatibility before use in plastic systems. The compound is combustible when preheated; keep away from heat sources, sparks, and open flames. Use appropriate eye protection—flush eyes thoroughly with water if contact occurs and seek medical attention if irritation develops. TTEG is not classified as a dangerous good for transport. Consult the Safety Data Sheet (SDS) for complete hazard information, exposure limits, first aid measures, and handling precautions.