Date published: 2026-7-28

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PEG 20000 (CAS 25322-68-3)

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Alternate Names:
Poly(ethylene glycol) 20000
Application:
PEG 20000 is a hydrophobic polymer
CAS Number:
25322-68-3
Molecular Weight:
~20000
Molecular Formula:
H(OCH2CH2)nOH
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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PEG 2000, also known as Poly(ethylene glycol), is a versatile compound with an average molecular mass of 2000. It finds applications in a wide range of fields, including industrial and biological chemistry. In industrial chemistry, PEG is utilized as a lubricant to reduce friction on various surfaces. Additionally, PEG plays a role in the development of vesicle transport systems, which have diagnostic applications in biological chemistry. PEG exhibits solubility in both water and nonpolar solvents like chloroform, ether, and benzene. Its solubility properties make it useful for enhancing the solubility of proteins and other organic compounds. Notably, the viscosity of PEG increases with the increase in its molecular weight.


PEG 20000 (CAS 25322-68-3) References

  1. Removal of peroxides in polyethylene glycols by vacuum drying: implications in the stability of biotech and pharmaceutical formulations.  |  Kumar, V. and Kalonia, DS. 2006. AAPS PharmSciTech. 7: 62. PMID: 17025243
  2. Modulating effect of polyethylene glycol on the intestinal transport and absorption of prednisolone, methylprednisolone and quinidine in rats by in-vitro and in-situ absorption studies.  |  Shen, Q., et al. 2008. J Pharm Pharmacol. 60: 1633-41. PMID: 19000368
  3. Poly(ethylene glycol)-modified gold nanorods as a photothermal nanodevice for hyperthermia.  |  Niidome, T., et al. 2009. J Biomater Sci Polym Ed. 20: 1203-15. PMID: 19520008
  4. Stability of a gold nanoparticle-DNA system in seawater.  |  Heo, JH., et al. 2013. J Nanosci Nanotechnol. 13: 7254-8. PMID: 24245239
  5. Solid-state characterization studies and effect of PEG 20000 and P90G on particle size reduction and stability of complexed glimepiride nanocrystals.  |  Sajeev Kumar, B., et al. 2013. J Young Pharm. 5: 83-9. PMID: 24396247
  6. Problems with PEG-based precipitation methods in the determination of HDL2- and HDL3-cholesterol.  |  Leino, A., et al. 1987. Scand J Clin Lab Invest. 47: 705-8. PMID: 2446379
  7. Crowded milieu prevents fibrillation of hen egg white lysozyme with retention of enzymatic activity.  |  Ghosh, S., et al. 2014. J Photochem Photobiol B. 138: 8-16. PMID: 24892979
  8. NANEX: Process design and optimization.  |  Baumgartner, R., et al. 2016. Int J Pharm. 506: 35-45. PMID: 27090153
  9. Fabrication of novel biodegradable porous bone scaffolds based on amphiphilic hydroxyapatite nanorods.  |  Zheng, X., et al. 2017. Mater Sci Eng C Mater Biol Appl. 75: 699-705. PMID: 28415517
  10. Highly Elastic Slide-Ring Hydrogel with Good Recovery as Stretchable Supercapacitor.  |  Feng, L., et al. 2020. Chemistry. 26: 14080-14084. PMID: 32462704
  11. Modulating Role of Co-Solutes in Complexation between Bovine Serum Albumin and Sodium Polystyrene Sulfonate.  |  Simončič, M. and Lukšič, M. 2022. Polymers (Basel). 14: PMID: 35335575
  12. Chemotactic response ofEscherichia colito polymer solutions.  |  Yang, Y., et al. 2022. Phys Biol. 19: PMID: 35545074
  13. Metabolism of polyethylene glycol by two anaerobic bacteria, Desulfovibrio desulfuricans and a Bacteroides sp.  |  Dwyer, DF. and Tiedje, JM. 1986. Appl Environ Microbiol. 52: 852-6. PMID: 3777930

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

PEG 20000, 250 g

sc-362505A
250 g
$50.00

PEG 20000, 1 kg

sc-362505
1 kg
$131.00