Polyethylene Glycol

2-Thiouracil CAS 141-90-2
Benzyl acetate
Benzyl acetate

Poly(ethylene glycol) paramete

CAS No.: 25322-68-3
MF: H-O(CH2CH2-O)nH, H-O(CH2CH2-O)nH
Place of Origin: Shandong, China
Purity: ≥99%
Model Number: CAS25322-68-3
Appearance: liquid
CAS: 25322-68-3
EINECS: 500-038-2
Shelf life: 2years
Color: Colorless
Other Names: Poly(ethylene glycol)
EINECS No.: 500-038-2
Type: Dyestuff Intermediates
Application: Organic catalyst, Organic catalyst
Product name: Poly(ethylene glycol)
Assay: ≥99%
Apperance: liquid
Sample: Availiable

Introduction of Polyethylene Glycol

Polyethylene glycol, abbreviated as "PEG" with the chemical formula C2H6O2, is a macromolecular compound formed by the intermolecular dehydration condensation of ethylene glycol.

Its properties vary depending upon the relative molecular mass, ranging from a colorless and odor-free thick fluid to a waxy strong. It is soluble in water and many natural solvents, quickly soluble in aromatic hydrocarbons, and slightly soluble in aliphatic hydrocarbons.

At room temperature, polyethylene glycol is liquid when its molecular weight is between 200 and 600, and it gradually becomes semi-solid when its molecular weight exceeds 600.

The number after the polyethylene glycol indicates the average molecular weight. For example, polyethylene glycol-400 means the average molecular weight of the product is about 400.

Polyethylene glycol 400 (PEG 400) is a low-molecular-weight quality of polyethylene glycol like the usual polyethylene glycol. It is a clear, colorless, thick fluid. PEG 400 is extensively used in different pharmaceutical formulas due partially to its low toxicity.


Colorless transparent liquid
Diphenyl Sulfide
Diphenyl Disulfide


1.Used as an analytical reagent and also in the pharmaceutical industry

2.Used as softener, lubricant, etc

3.In medicine, cosmetics as a substrate, in rubber, metal processing, pesticides and other industries as dispersants, lubricants, emulsifiers

4.Organic synthesis of media, daily cosmetics industry humectant, inorganic salt solvent, viscosity regulator, etc

5.Used as flocculant, fluid friction reducer, textile wetting agent, retention and filter aid, adhesive, thickener and denture fixator, etc

6.Used in cosmetic, pharmaceutical, chemical fiber, rubber, paper making, paint, electroplating, pesticide, metal processing and food processing industries

7.Used as mold agent, metal drawing, stamping and forming lubricant, papermaking industry lubricant, cutting fluid, lapping liquid cooling lubrication, polishing agent, etc

Why Choose to Look Chemical as a Polyethylene Glycol Supplier?

Look Chemical is an experienced polyethylene glycol distributor and manufacturer. Our products are competitively priced and enjoy a good reputation and market share worldwide.

Our factory has first-class polyethylene glycol production line equipment to ensure maximum product quality. We guarantee accurate net weight and well-sealed packaging for long-term needs - long-distance shipping for export.

Application of Polyethylene Glycol in Various Fields

Use as chemical and analytical reagents.

One of the main roles of polyethylene glycol is as a solvent or surfactant, helping to mix chemically different components evenly.

They are used as plasticizers, softeners, wetting agents, lubricants, solvents, and binders, as well as in the formulation of fragrances and as pharmaceutical preparations.

Used in pharmaceuticals

Polyethylene glycol is a polymer of hydrolysis item of ethylene oxide, which is safe, non-irritating, and widely utilized in numerous pharmaceutical preparations, for instance.

Used as the liquid for contact lenses. The viscosity of its aqueous solution is sensitive to shear rate, and bacteria do not grow easily on polyethylene glycol.

Used in synthetic lubricants. Condensation polymer of ethylene oxide and water. For the preparation of ointment base for water-soluble drugs, also as a solubilizer for water-insoluble drugs such as acetylsalicylic acid and caffeine for the preparation of injection solutions.

Carrier for slow drug release and immobilized enzymes. Applying polyethylene glycol aqueous solution to the outer layer of pills can control the diffusion of drugs in the pills to improve the efficacy.

Used in daily chemical products

Also, polyethylene glycol interacts strongly with water, so adding this product to these products helps keep them moist.

In addition, some daily chemical products require a certain viscosity. Since low molecular weight polyethylene glycols are viscous liquids, they can significantly increase the viscosity of these cosmetic products.

This product increases skin suppleness in topical lotions and has a moisturizing effect similar to glycerin.

Taken together, the toxicity of the diols is quite low. Topical application of polyethylene glycol, especially for mucosal administration, can cause irritation and pain.

Use as a pro-fusion agent.

An excellent chemical pro-fusion agent used in protoplast fusion. In 50% PEG, free water disappears, leading to cell dehydration and causing structural changes in the plasma membrane and cell fusion.

The advantages of PEG for use in cell fusion are.

① Highly versatile and can be used in various animals, plants, and microorganisms.

②Easy to prepare and control than the Sendai virus etc.

③Stable activity and easy to use.

Chemical Properties

Under normal conditions, polyethylene glycol is stable but can interact with oxygen in the air at 120℃ or higher.

In an inert ambiance (such as nitrogen and carbon dioxide), it does not transform even when heated to 200-240 ° C. When the temperature level climbs to 300 ° C, it undergoes thermal breaking.

It does not hydrolyze for a long time, is secure to heat, and does not react with several chemical reagents.

Adding antioxidants, such as phenothiazine with a mass fraction of 0.25% to 0.5%, can enhance its chemical stability. Any of its disintegration products are unpredictable and do not create crusty or slimy precipitates.

Particular steel salts are soluble in polyethylene glycol at concerning 100 ° C as well as continue to be secure at room temperature. These steel salts consist of calcium, cobalt, copper, iron, magnesium, manganese, tin and zinc chloride, potassium iodide, and ethylmercury.

Product service

1. Certificate Of Analysis (COA)

2. Material Safety Data Sheet (MSDS)

3. Route of synthesis (ROS)

4. Method of Aanlysis (MOA)

5. Nuclear Magnetic Resonance (NMR)

6. Packing pictures and loading video before loading

7. Free Sample

8. Factory audit

About Look Chemical

Look Chemical is an experienced polyethylene glycol distributor and supplier. As a supplier of polyethylene glycols with an extensive distribution network, customers in many markets rely on Look Chemical to supply chemical feedstocks.

We have our production lines and stable production capacity to ensure a consistent and stable supply of products to our customers. You may have other requirements for product requirements, and we can custom manufacture them for you!

We will give you the COA, MSDS, and other information on polyethylene glycol.

If you are looking for a reliable polyethylene glycol supplier, professional production and perfect service will surely make you satisfied!


Pre-Sales Service

* Prompt reply and 24 hours online, professional team to provide best price and high quality product.

* Sample testing support.

* Every batch of products will be tested to ensureits quality.

*The packing also can be according the customers` requirment.

*Any inquiries will be replied within 24 hours.

*we provide Commerical Invoice, Packing List, Bill of loading, COA , Health certificate and Origin certificate. If your markets have any special requirements, let us know.

After-Sales Service

*The fact of logistics information monitoring.

* Any questions about the product can be consulted at any time.

*Product has any problem can return.


Q1: Do you accept sample order?
A:  We will make samples before mass production, and after sample approved, we'll begin mass production. Doing 100% inspection during production, then do random inspection before packing.
Q2:  What is our advantage?
A : The series of natural extracted product are all self-developed, produced and tested. Mature production technology, strict cost control, and perfect quality assurance system, ensure the product stability and competitive price.
Q3: What’s your MOQ?
A :  Our MOQ is 1kg. But usually we accept less quantity such as 100g on the condition that sample charge is 100% paid.
Q4: Do you supply product report?
A : Yes. We'll give you product analysis report before shipping.
 Q5: Is there a discount?
A :  Different quantity has different discount.
Q6: Can we visit your factory?
A :  Yes. Welcome to visit.
Q7: How to confirm the Product Quality before placing orders?
A :  You can get free samples for some products,you only need to pay the shipping cost or arrange a courier to us and take the samples. You can send us your product specifications and requests,we will manufacture the products according to your requests.




1. ≤50kg, Express delivery recommended, usually called as DDU service;

2. ≤500kg, Air shipping recommended, usually called as FOB, CFR, or CIF service;

3. >500kg, sea shipping recommended, usually called as FOB, CFR, or CIF service;

4. For high value products, please select air shipping and express delivery for safe.


Packing can be conducted according to customers' requirements.

Delivery detail

   [Delivery] 5 working days after payment.

Poly(ethylene glycol) picture

Packaging and shipping

Honor Certificate

Professional team