Poly(ethylene glycol)

greener alternative

average Mn 400

Linear Formula:
CAS Number:
MDL number:
PubChem Substance ID:

Quality Level


viscous liquid

mol wt

Mn 380-420
average Mn 400

greener alternative product characteristics

Safer Solvents and Auxiliaries
Learn more about the Principles of Green Chemistry.

refractive index

n20/D 1.466




7.3 cSt(210 °F)(lit.)


4-8 °C (lit.)


1.128 g/mL





greener alternative category


SMILES string




InChI key


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General description

Poly(ethylene glycol) (PEG) is a synthetic, hydrophilic, biocompatible polymer with widespread use in biomedical and other applications. PEGs are non-toxic, FDA-approved, generally non-immunogenic, and frequently used in many biomedical applications including bioconjugation, drug delivery, surface functionalization, and tissue engineering. In drug delivery, PEGs can be used as linkers for antibody-drug conjugates (ADCs) or as a surface coating on nanoparticles to improve systemic drug delivery.


Poly(ethylene glycol) (PEG) has been used as a coating agent for the synthesis and in vitro safety assessment of magnetic bacterial cellulose (MBC) pellicles, performed on porcine aortic smooth muscle cells (PAOSMC). PEG provides a compatible surface for cell culture, since uncoated iron oxide NPs are considered cytotoxic to cells. It has also been used as a plasticizer in investigating the effectiveness of polyvinylpyrrolidone microneedles for transdermal delivery of functional collagen using porcine skin, adult human skin analog and human foreskin. Microneedles obtained, were reportedly characterized by various analytical and bio-analytical techniques.
Used in conjunction with carbon black to form a conductive composite. Polymer nanospheres of poly(ethylene glycol) were used for drug delivery.


250, 500 g in poly bottle
20 kg in poly drum
5 g in glass bottle

Legal Information

Selectfluor is a registered trademark of Merck KGaA, Darmstadt, Germany

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves


NONH for all modes of transport

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Certificate of Origin

Ruth Hernandez-Perez et al.
Physical review. E, 96(6-1), 062803-062803 (2018-01-20)
The evaporation of droplets can give rise to a wide range of interesting phenomena in which the dynamics of the evaporation are crucial. In this work, we find simple scaling laws for the evaporation dynamics of axisymmetric droplets pinned on...
Akashi, M., Akagi, T.
Yuki Gosei Kaguku Kyokaishi, 65, 520-520 (2004)
Transdermal delivery of functional collagen via polyvinylpyrrolidone microneedles
Sun W, et al.
Annals of Biomedical Engineering, 43(12), 2978-2990 (2015)
Synthesis and in vitro safety assessment of magnetic bacterial cellulose with porcine aortic smooth muscle cells
Pastrana FH, et al.
Journal of Biomedical Materials Research Part A, 104(11), 2801-2809 (2016)
Changxin Wan et al.
Cancer research, 81(1), 158-173 (2020-11-08)
Immune therapies have had limited efficacy in high-grade serous ovarian cancer (HGSC), as the cellular targets and mechanism(s) of action of these agents in HGSC are unknown. Here we performed immune functional and single-cell RNA sequencing transcriptional profiling on novel...
Related Content
Polyethylene glycol (PEG), also sometimes referred to as polyethylene oxide (PEO), is a condensation polymer of ethylene oxide and water that has several chemical properties that make it useful for biological, chemical and pharmaceutical applications.
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