Diethylene Glycol(CAS:111-46-6) DEG Bulk Industrial Chemical Supplier - Basic Chemical Raw Material for Solvent Preparation, Resin Synthesis and Textile Auxiliaries

Product Overview

Diethylene glycol — DEG, also listed as diglycol or 2,2'-oxydiethanol — is the glycol that forms when two ethylene glycol molecules join through an ether linkage. Two hydroxyl groups sit at the ends of the molecule with an oxygen bridge between them, and that structure is where its working character comes from: it binds water strongly, mixes with water in any proportion, thickens a formulation more than monoethylene glycol does, and stays in the process far longer than a light, fast-evaporating solvent.

We supply it as an industrial grade, refined by distillation at our base in Dongying, Shandong. It arrives as a colourless to pale yellow, transparent, slightly viscous liquid with almost no odour. Nothing is blended into it: what you buy is the glycol as it leaves the refining train, released against a batch analysis.

Its uses follow from those properties. Gas processing plants use it to pull water vapour out of natural gas, air and other industrial gases. Polyester, PBT and polyurethane producers dose it as a chain transfer agent or chain extender to steer molecular weight. Unsaturated polyester and gelcoat plants use it as an active diluent and solvent in glass-fibre reinforced systems. Textile finishers take it as a dye solvent and humectant; formulators of hydraulic oils, brake fluids, lubricants and printing inks use it as a viscosity modifier and moisture-holding component; and it is also a route to morpholine and an ingredient in certain adhesives and sealants.

Buyers are industrial: resin and composites manufacturers, gas processing operators, textile chemical blenders, fluid and ink formulators, distributors serving those sectors, and blenders of industrial cleaners who want a high-boiling, fully water-miscible glycol in the mix. It is a bulk raw material for plants that convert it, not a consumer product.

Specifications

Key Properties

• Water uptake that does real work — DEG hydrogen-bonds water readily, which is the whole point in a dehydration unit and the reason an ink or a textile finish stays open instead of skinning over. The same appetite means an open drum will pick up atmospheric moisture, so keep bungs and lids tight between draws.
• Complete miscibility with water — it mixes in any ratio without splitting, clouding or salting out, so dilution, rinsing and wash-water handling stay simple and no second phase forms in the tank.
• Two reactive ends — both hydroxyls can enter condensation reactions, letting DEG act as a chain extender or chain transfer agent and shift molecular weight and end-group balance in polyester and polyurethane batches.
• Staying power in the process — a high boiling point and low vapour loss keep it in the system through drying, curing and finishing steps where a fast solvent would already have left.
• Body and freeze behaviour — noticeably more viscous than monoethylene glycol at the same temperature, it builds thickness in hydraulic and brake fluids and modifies lubricant viscosity, while still depressing the freezing point of water-based systems.
• Neutral load on your equipment — supplied neutral, so storage and transfer through mild-steel drums, pumps, pipework and heat exchangers does not add an acidity load to the batch.

Industrial Applications

Natural gas and industrial gas dehydration

Gas processors use the material's hygroscopicity to strip water vapour from natural gas, air and other process gases. Triethylene glycol is the more common desiccant in large dedicated units, but DEG is a workable choice where a glycol loop is already on site or where the contactor design suits a more viscous liquid. Confirm circulation rate and regeneration conditions in your own unit before switching a system over.

Polyester, PBT and polyurethane

Charged as a chain transfer agent or chain extender, DEG changes how far a polymer chain grows and where it stops. In polyester and PBT it adjusts molecular weight and can introduce ether links into the backbone; in polyurethane it acts as a short-chain diol extender. Small dosage changes show up clearly in melt viscosity and finished mechanical properties, which is why batch-to-batch consistency matters as much as the head grade.

Unsaturated polyester and glass-fibre composites

In UPR and gelcoat systems it works as an active diluent and solvent: it lowers working viscosity, helps the resin wet out glass fibre, and can be built into the resin backbone to adjust flexibility. Hand lay-up, closed moulding and panel shops are the typical users.

Textile dyeing and finishing

Finishing plants use it as a dye solvent and humectant in fabric finishing agents, improving dye dispersion and the hand of the finished fabric. Because it holds moisture, it also slows the surface drying that can cause uneven thermo-fixation across a batch.

Functional fluids and printing inks

As a viscosity modifier and antifreeze component it appears in lubricants, hydraulic oils and brake fluids, and in low-toxicity antifreeze circuits such as solar thermal systems. In printing inks it works as a solvent and humectant, keeping the film open on press. Sites that cut viscosity with a xylene thinner normally keep DEG as the humectant rather than the diluent, because the aromatic thinner drives evaporation while the glycol holds the film back.

Morpholine, adhesives and sealants

DEG is one of the starting materials for morpholine production and appears as a component in certain adhesives and sealants, where its moisture affinity and low volatility help the formulation stay workable through application.

Handling, Safety & Storage

• Treat it as a restricted industrial material — the oral LD₅₀ in rats is around 12–20 g/kg, and swallowing even a small amount can cause severe harm, including kidney failure. It is not a general-purpose glycol and should never be handled casually on site.
• Protect skin and eyes — gloves and goggles are the minimum when drawing from drums, IBCs or tanks; a face shield and apron belong at the decanting station. Rinse any splash promptly with plenty of water and get medical attention if the eyes are involved.
• Control mist, not just vapour — this is not a light solvent, but pumping, heating and splash filling can still create aerosol. Use local exhaust at the transfer point and keep the area ventilated.
• Keep containers closed — the material pulls moisture out of the air. Bungs, lids and tank hatches closed between draws keep water content at the release specification.
• Store cool, dry and upright — under cover, away from strong oxidisers, with drums and IBCs on spill trays. Frost-free storage is worth arranging: the liquid thickens as it cools and can solidify in a hard frost, which makes unloading slow.
• Plan the spill response — absorb on inert material and stop the liquid reaching drains or watercourses; because it mixes completely with water it will not separate out once it is in a ditch or a stream.

Production Route & Origin

1. Ethylene oxide hydration. Ethylene oxide is reacted with water to make monoethylene glycol, and DEG forms in the same train as the dimeric by-product of that reaction.
2. Separation from the glycols. The DEG cut is drawn off and routed to its own purification instead of being recycled back into the MEG line.
3. Distillation refining. Water and lighter glycols are taken out and the product is brought up to the industrial grade we ship, with appearance and water content checked against the release specification.
4. Batch release. Each lot is sampled and analysed before it is cleared for packing; release is based on that batch's own results, not the previous batch.
5. Storage and loading. Finished material goes to dedicated tanks and is loaded under SOP-compliant procedures for chemical cargo, with warehousing and logistics handled in-house.
6. Dispatch from the Bohai Rim. Everything runs from our park-based site in Dongying, Shandong — modern plants with automated control and integrated utilities, and a team of more than 200 across R&D, production and sales — and ships out through the Bohai Rim port cluster.

Ordering & Delivery

1. Send the specification. Tell us the grade, the end use — resin, gas dehydration, textile finishing or industrial cleaners — and the destination port. The end use determines which documents and which packing make sense.
2. Agree the packing. Steel drums, plastic drums, IBC tanks, flexitanks, ISO tanks and bags are all available. The choice usually comes down to volume, the unloading equipment at your site and how long the material will sit in store.
3. Set the volume and the pricing basis. The minimum order quantity is one 20-foot container (20' FCL) per product. Pricing is negotiated against order quantity, and volume discounts are discussed on the quantity and frequency you can commit to, so it is worth sharing your quarterly or annual run rate at quotation stage.
4. Confirm payment terms. We work on T/T and L/C as standard. Other arrangements can be discussed case by case, particularly for regular business.
5. Confirm documents and inspection. The quality paperwork, safety data sheet and packing list travel with the shipment; a third-party pre-shipment inspection can be arranged if your QA team wants one.
6. Book the shipment. Delivery is generally arranged within 14 working days of receiving the deposit or the original letter of credit. Loading follows our standard operating procedures for chemical cargo through professional chemical logistics channels.

Aromatic and Multi-Line Supply

Plants that run DEG rarely run it alone. A coating or ink line using a glycol humectant usually buys an aromatic thinner as well, and both are easier to administer when they arrive from the same base with one set of documents.

Mixed xylene is produced on our Dongying site, so the aromatic stream is ours rather than bought in. That is why coating and ink customers can treat us as their xylene manufacturer as well as their glycol supplier. A wash or dilution grade for the same formulation is quoted by the same team that handles the glycol, which is the work the xylene solvent manufacturer side of the business does every week. The xylene thinner manufacturer work runs from the same tanks, the same loading bay and the same release discipline.

For a plant buying across categories the practical gain is consolidation: a xylene chemical for the thinner line, an ester or a ketone for another department, and the glycol for the resin shop can be booked on one shipment, checked on one document package and moved through one freight arrangement. Tell us what else sits on your purchase list and we will confirm what can travel together. The same applies to buyers who blend coatings, inks and industrial cleaners, where the glycol and the aromatic are usually bought side by side.

A Reliable Fine Chemical Partner

Shandong Wintex Chemical Co., Ltd. is based in Dongying, Shandong, a leading petrochemical base in China, and focuses on the research, development, production and sale of high-value-added fine chemicals. Its park-based manufacturing site brings together modern plants, automated control systems and integrated utilities to support efficient full-process production. As a key fine chemical supplier in the Bohai Rim, the company maintains substantial capacity for stable, premium products and integrated supply chain solutions. Wintex works as a partner rather than only a supplier, helping customers address challenges in sourcing, application and technical support. Through its “two ends abroad” trade strategy, it continues to grow international trade and global partnerships. The company’s commitment is summed up in Safety, Innovation, Win-Win. To confirm current capacity, product grades or supply terms for your project, contact the Wintex team directly.

Scale & Supply Capability

Shandong Yingtai Chemical Co., Ltd. operates from Dongying, Shandong, in the heart of China's petrochemical industry and home to the Shengli Oilfield. Our 60,000㎡ park-based facility runs modern plants with automated control systems and integrated utilities, and a team of over 200 people covers R&D, production and sales of high-value-added fine chemicals. We supply seven core chemical categories, backed by stable quality and consistent availability, and work alongside buyers on sourcing, product application and technical support. Custom requirements are reviewed case by case — share your specification and volume and we will confirm feasibility.

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