Polyethylene Glycol

Other Trading Names:

  • PEG

CAS Number: 25322-68-3

HS Code: 34042000

Types of Packaging:

  • 200kg/drum
  • 25kg/bag
Inquiry right-arrow $100.00
Availability: In stock
SKU
Polyethylene Glycol

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Specification

Appearance(25°C)

Color Pt-

Co

Hydroxyl

Value

Molecular

weight

Freezing

point°C

Moisture(%)

PH value (1% aqueous

solution)

PEG-200

Colorless and clear

liquid

<20

510~623

180~220

-

<1.0

5.0~7.0

PEG-300

Colorless and clear

liquid

<20

340~416

270~330

-

<1.0

5.0 ~ 7.0

PEG-400

Colorless and clear

liquid

<20

255~312

360~440

4~10

<1.0

5.0 ~ 7.0

PEG-600

Colorless and clear

liquid

<20

170~208

540~660

20 25

<1.0

5.0 - 7.0

PEG-800

Milky white cream

<30

127~156

720~880

26 32

<1.0

5.0 ~ 7,0

PEG-1000

Milky white cream

<40

102~125

900~1100

38 41

<1.0

5.0 ~ 7,0

PEG-1500

Milky white solid

<40

68~83

1350~1650

43 46

<1.0

5.0 ~ 7.0

PEG-2000

Milky white solid

<50

51~63

1800~2200

48 50

<1.0

5,0 ~ 7.0

PEG-3000

Milky white solid

<50

34~42

2700~3300

51 53

<1.0

5.0 ~ 7.0

PEG-4000

Milky white solid

<50

26~32

3500~4400

53 54

<1.0

5.0 ~ 7.0

PEG-6000

Milky white solid

<50

17.5~20

5500~7000

54 60

<1.0

Activa 5.0 ~ 7,0

Go to Se

PEG-8000

Milky white solid

<50

12~16

7200~8800

60 63

<1.0

5.0 ~ 7,0

Chemical Description

  • Polyethylene glycol (PEG) is a polyether compound with many applications in industrial manufacturing, medicine, and biotechnology.
  • It is known chemically as a polyether composed of repeating ethylene glycol units, with the general formula H-(OCH₂CH₂)n-OH, where n represents the number of repeating units.
  • PEGs are available in a variety of molecular weights, ranging from 300 g/mol to 10,000,000 g/mol, which are tailored to specific applications.
  • The physical state of PEG varies with molecular weight: lower molecular weight PEGs (below 600 g/mol) are typically liquids, while higher molecular weight PEGs are waxy solids.
  • PEG is highly soluble in water, as well as in many organic solvents such as acetone, alcohols, and benzene, making it extremely versatile in different environments.
  • One of the key properties of PEG is its low toxicity and biodegradability, which makes it suitable for use in pharmaceuticals and cosmetics.
  • In pharmaceuticals, PEG is used as a base for ointments and as a vehicle for drugs, ensuring controlled release and improved solubility of active ingredients.
  • PEG is also employed in the production of laxatives, as it attracts and retains water, softening the stool and easing bowel movements.
  • In the field of biotechnology, PEG is used in the process of cell fusion and hybridoma production, where it facilitates the merging of cell membranes.
  • PEGylation, the process of attaching PEG chains to proteins and drugs, enhances the stability and solubility of these molecules, extending their half-life in the bloodstream and reducing immunogenicity.
  • PEG serves as a lubricant in industrial settings, providing smooth operation of machinery and reducing wear and tear on moving parts.
  • In the cosmetics industry, PEG is used in creams, lotions, and toothpaste as an emulsifier and moisturizer, helping to maintain product consistency and hydrate the skin.
  • The polymerization of ethylene oxide produces PEG, a process that can be controlled to achieve the desired molecular weight and properties.
  • PEG is also used in the preservation of biological tissues and organs, where it helps to prevent ice crystal formation during cryopreservation.
  • Environmental applications of PEG include its use as a dispersing agent in detergents, where it helps to break down oils and fats for more efficient cleaning.
  • PEG's versatility extends to its role as a plasticizer in the manufacture of plastics, where it imparts flexibility and durability to the final product.
  • Despite its widespread use, PEG can sometimes cause hypersensitivity reactions in certain individuals, although these cases are relatively rare.
  • PEG is often used in laboratory research as a crowding agent in solutions, mimicking the densely packed conditions within cells.
  • PEGylated proteins and nanoparticles are being explored for targeted drug delivery systems, aiming to enhance the efficacy and reduce the side effects of treatments.
  • PEG's unique combination of chemical stability, solubility, and biocompatibility continues to drive innovation and expand its applications across various fields.
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Polyethylene Glycol