81255

Sigma-Aldrich

Poly(ethylene glycol)

BioUltra, 6,000

Synonym(s):
PEG
Linear Formula:
H(OCH2CH2)nOH
CAS Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.26

Quality Level

product line

BioUltra

form

solid

mol wt

Mr 5000-7000

impurities

insoluble matter, passes filter test
≤20 mg/kg peroxides (as H2O2)

pH

5.5-7.0 (25 °C, 50 mg/mL in H2O)

solubility

H2O: 50 mg/mL at 20 °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: 0.15
λ: 280 nm Amax: 0.10

storage temp.

2-8°C

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.

Application

Poly(ethylene glycol) has been used for stress (dehydration) treatment in seedlings of Galegae orientalis. It has been used for the preparation of aqueous two-phase system to study protein diffusion across the interface.

Other Notes

Fractional precipitation of proteins; Protoplast fusion; In virus purification; Electroblotting of proteins on agarose gel containing PEG and antibodies

storage_class_code

13 - Non Combustible Solids

WGK Germany

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

Certificate of Analysis

Certificate of Origin

R F Atmeh et al.
Electrophoresis, 14(1-2), 69-72 (1993-01-01)
A method is described for electroblotting of proteins, separated by gradient polyacrylamide gel electrophoresis, onto an agarose gel matrix containing specific antibodies. Three proteins of different molecular weight, including human albumin, isolated and in plasma, human plasma transferrin and C3...
Protein diffusion across the interface in aqueous two-phase systems.
Munchow G, et al.
Langmuir, 24, 8547-8553 (2008)
Rapid bacteriophage sedimentation in the presence of polyethylene glycol and its application to large-scale virus purification.
K R Yamamoto et al.
Virology, 40(3), 734-744 (1970-03-01)
José A Manso et al.
Structure (London, England : 1993), 27(6), 952-964 (2019-04-23)
Mechanical stability of epithelia requires firm attachment to the basement membrane via hemidesmosomes. Dysfunction of hemidesmosomal proteins causes severe skin-blistering diseases. Two plakins, plectin and BP230 (BPAG1e), link the integrin α6β4 to intermediate filaments in epidermal hemidesmosomes. Here, we show...
J.B. Power et al.
Methods in Enzymology, 118, 578-578 (1986)

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