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84797

Sigma-Aldrich

Poly(ethylene glycol)

BioUltra, 2,000

Synonym(s):

Polyethylene glycol, PEG

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About This Item

Linear Formula:
H(OCH2CH2)nOH
CAS Number:
25322-68-3
MDL number:
MFCD00081839
UNSPSC Code:
12352104
PubChem Substance ID:
24888269
NACRES:
NA.26

product line

BioUltra

form

powder

mol wt

Mr 1900-2200

impurities

insoluble matter:, passes filter test
≤0.001% peroxides (as H2O2):

pH

5.5-7.0 (25 °C, 50 mg/mL in H2O)

mp

50-53 °C

solubility

H2O: 50 mg/mL at 25 °C, clear, colorless

anion traces

chloride (Cl-): ≤50 mg/kg
sulfate (SO42-): ≤50 mg/kg

cation traces

Al: ≤5 mg/kg
As: ≤0.1 mg/kg
Ba: ≤5 mg/kg
Bi: ≤5 mg/kg
Ca: ≤10 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
K: ≤200 mg/kg
Li: ≤5 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
Mo: ≤5 mg/kg
Na: ≤200 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Sr: ≤5 mg/kg
Zn: ≤5 mg/kg

λ

50 mg/mL in H2O

UV absorption

λ: 260 nm Amax: ≤0.1
λ: 280 nm Amax: ≤0.04

SMILES string

C(CO)O

InChI

1S/C2H6O2/c3-1-2-4/h3-4H,1-2H2

InChI key

LYCAIKOWRPUZTN-UHFFFAOYSA-N

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General description

Poly(ethylene glycol) (PEG) is a non-ionic hydrophilic polymer and is available in different molecular weights. It helps in the purification and crystal growth of proteins and nucleic acids. PEG and dextran together result in aqueous polymer two phase system, which is required for the purification of biological materials. PEG also interacts with cell membrane, thereby allowing cell fusion. It exhibitsstealth effect, prolonged blood circulation and excellent biocompatibility. PEG has an ability to elicit hypersensitivity reactions via stimulating complement pathway.

Application

Poly(ethylene glycol) has been used:
  • as a constituent in the preparation of liquid desiccant solutions
  • as a precipitating agent and additive in protein crystallization
  • as a representative biocompatible polymer to decipher its interactions with cellular system at molecular level

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

281.5 °F - closed cup

Flash Point(C)

138.6 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Influence of osmotic drying with an aqueous poly (ethylene glycol) liquid desiccant on alumina objects gelcast with gelatin
Hammel EC, et al.
Ceramics International, 43(18), 16443-16450 (2017)
Exploring carbon nanomaterial diversity for nucleation of protein crystals
Govada L, et al.
Scientific Reports, 6(18), 20053-20053 (2016)
Poly(Ethylene Glycol) Chemistry: Biotechnical and Biomedical Applications (2013)
Crystal Structures of Membrane Transporter MmpL3, an Anti-TB Drug Target
Zhang B, et al.
Cell, 176(3), 636-648 (2019)
Li Xu et al.
Biomaterials, 147, 1-13 (2017-09-20)
As the gold standard polymer for drug delivery system, polyethylene glycol (PEG) has excellent biocompatibility. It's reported that the low nonspecific interactions between PEG and body contribute to its biocompatibility. However, here we discover dynamic biological interactions exist between PEG
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