Description
Diethylene Glycol (DEG) is a versatile, water-soluble organic compound formed by the ether linkage of two ethylene glycol molecules. This clear, nearly odorless liquid combines the chemical characteristics of both primary alcohols and ethers, delivering exceptional solvency power, hygroscopicity, and thermal stability in a single molecule. With a boiling point of 245°C (473°F)—significantly higher than its mono-ethylene glycol precursor—DEG offers superior performance in applications requiring low volatility and elevated operating temperatures. The compound’s dual hydroxyl groups provide extensive chemical reactivity, serving as building blocks for polyester resins, polyurethanes, plasticizers, and specialty intermediates. Its remarkable ability to absorb moisture from gases and liquids has established DEG as the industrial standard for natural gas dehydration and humidity control applications.
- Exceptional Thermal Range: Operating capability from -9°C to over 240°C with extremely low vapor pressure (0.002 mmHg @ 20°C), enabling use in both low-temperature freeze protection and elevated-temperature process applications.
- Superior Solvency: Dissolves a broad spectrum of organic substances including dyes, resins, oils, and nitrocellulose while maintaining complete water miscibility across all concentrations.
- Outstanding Hygroscopicity: Efficiently absorbs atmospheric moisture, making it ideal for gas drying, humidity control, and as a conditioning agent for paper, cork, and textile products.
- Chemical Versatility: Dual hydroxyl functionality enables conversion to aldehydes, amines, esters, ethers, and numerous other derivatives for downstream chemical synthesis.
Applications
Natural Gas Dehydration · Heat Transfer Fluids · Unsaturated Polyester Resin Production · Polyurethane Manufacturing · Plasticizer Intermediate · Printing Inks & Dyes · Textile Conditioning · Glass & Cement Grinding Aids · Cork & Paper Treatment · Brake Fluid Formulation · Latex Paint Antifreeze · Morpholine Synthesis · 1,4-Dioxane Production · Adhesive & Coating Formulations · Soluble Oil Stabilization · Aromatic Hydrocarbon Separations
Benefits
High Boiling Point & Low Volatility · Complete Water Miscibility · Excellent Solvency Power · Superior Hygroscopic Properties · Broad Chemical Compatibility · Thermal Stability · Low Freezing Point · Versatile Chemical Intermediate
Product Availability
250 g · 500 g · 2500 g · 10,000 g · Bulk (Drums / Totes)
Product Data
| Property | Specification |
| Appearance | Clear, Colorless to Pale Yellow Liquid |
| Composition | 2-(2-hydroxyethoxy)ethanol |
| CAS Number | 111-46-6 |
| Molecular Formula | C₄H₁₀O₃ |
| Molecular Weight | 106.12 g/mol |
| Assay (Purity) | ≥99% |
| Boiling Point | 473.5°F (245.3°C) |
| Freezing Point | 15.8°F (-9.0°C) |
| Flash Point (Closed Cup) | 310°F (154°C) |
| Flash Point (Open Cup) | 325°F (163°C) |
| Autoignition Temperature | 687°F (364°C) |
| Specific Gravity @ 20°C | 1.1182 |
| Viscosity @ 20°C | 35.7 cP |
| Refractive Index @ 20°C | 1.4472 |
| Vapor Pressure @ 20°C | 0.002 mmHg |
| Water Solubility @ 20°C | Miscible (100%) |
| Surface Tension @ 25°C | 44.8 dynes/cm |
| Heat of Vaporization | 234.4 BTU/lb |
