CAS 111-46-6 · Ether Diol
Diethylene Glycol
DEG · C₄H₁₀O₃ · MW 106.12 g/mol
A high-boiling ether diol produced as a co-product of ethylene glycol manufacture. DEG combines the properties of a glycol and an ether, making it a versatile industrial chemical for gas dehydration, plasticizer production, polyester resins, and textile processing. Texas-Chem supplies DEG in drums, totes, and bulk.
Formula
C₄H₁₀O₃
Boiling Point
245 °C
Solubility
Fully water-miscible
Pack Sizes
Drums · Totes · Bulk
Structural Formula
Ether diol — two ethylene glycol units linked by an ether oxygen bridge
Safety & Regulatory
- NFPA Health
- 1 — Slight hazard
- NFPA Flammability
- 1 — Slight hazard
- NFPA Reactivity
- 0 — Stable
- OSHA PEL
- None established
- ACGIH TLV
- None established
- DOT Hazard Class
- Not regulated
- Toxicity
- Low acute toxicity; avoid ingestion
Combustible liquid — store away from heat and ignition sources. Always consult the current Safety Data Sheet before handling.
Grades & Packaging
Available Grades
Pack Sizes
Physical & Chemical Properties
| Molecular Formula | C₄H₁₀O₃ |
| Molecular Weight | 106.12 g/mol |
| CAS Number | 111-46-6 |
| Boiling Point | 245 °C (473 °F) |
| Melting Point | −10.4 °C (13.3 °F) |
| Flash Point | 124 °C (255 °F) — Combustible |
| Density | 1.118 g/cm³ at 20 °C |
| Vapor Pressure | <0.001 kPa at 20 °C |
| Solubility in Water | Miscible in all proportions |
| Viscosity | 30.2 mPa·s at 25 °C |
| Refractive Index | 1.4472 at 20 °C |
| Auto-ignition Temp. | 229 °C (444 °F) |
Industrial Applications
Natural Gas Dehydration
DEG is used as a dehydration agent in natural gas processing to remove water vapor from gas streams, preventing hydrate formation and pipeline corrosion.
Plasticizers
Feedstock for diethylene glycol dibenzoate and other plasticizers used in PVC, adhesives, and sealants. Provides flexibility and low-temperature performance.
Unsaturated Polyester Resins
Monomer in the production of unsaturated polyester resins for fiberglass composites, gel coats, and casting resins. Improves flexibility and impact resistance.
Textile Finishing
Softening and lubricating agent in textile processing. Used in fiber finishing, yarn sizing, and fabric softener formulations.
Morpholine Production
Chemical intermediate for the synthesis of morpholine — a solvent and chemical building block used in pharmaceuticals, rubber chemicals, and corrosion inhibitors.
Humectants & Solvents
Humectant in printing inks, paper coatings, and tobacco processing. Solvent for nitrocellulose, resins, and dyes in specialty coating applications.
Why Source DEG from Texas-Chem?
- 35+ years supplying industrial glycols to Texas manufacturers
- Industrial grade available in multiple pack sizes
- Flexible packaging from 55-gal drums to bulk tanker delivery
- Competitive pricing backed by top-tier producer relationships
- Technical support and SDS documentation with every order
- Same-day quotes for standard quantities
Diethylene Glycol vs. Alternatives
Diethylene glycol (DEG) is a high-boiling diol used in gas dehydration, resins, and plasticizers. Here's how it compares to related glycols.
| Attribute | Diethylene Glycol | Ethylene Glycol | Triethylene Glycol |
|---|---|---|---|
| Boiling Point | 245 °C (473 °F) | 197 °C (387 °F) | 285 °C (545 °F) |
| Hygroscopicity | High | Moderate | Very high |
| Primary Use | Gas dehydration, resins, plasticizers | Antifreeze, polyester | Gas dehydration (preferred) |
| Toxicity | Toxic — not food-safe | Toxic — not food-safe | Low toxicity |
| Viscosity (25 °C) | 30 cP | 16 cP | 47 cP |
Industries We Supply Diethylene Glycol To
Natural Gas Processing
DEG is used as a dehydration agent in glycol contactors to remove water vapor from natural gas streams at Gulf Coast processing facilities.
Diethylene Glycol supply in Houston, TXResin & Polymer Manufacturing
Intermediate in the production of unsaturated polyester resins, polyurethanes, and plasticizers for the coatings and composites industries.
Diethylene Glycol supply in Beaumont, TXTextile & Fiber Processing
Used as a softening agent and lubricant in textile manufacturing and synthetic fiber processing operations.
Diethylene Glycol supply in Dallas, TXPrinting & Inks
Solvent and humectant in printing inks, dyes, and coatings where high boiling point and low volatility are required.
Diethylene Glycol supply in Fort Worth, TX