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Poly(ethylene glycol)

Name: Poly(ethylene glycol)
Brand: SIGMA

BioUltra, 6,000

Greener Alternative

Synonym(s):

Polyethylene glycol, PEG

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About This Item

Linear Formula:

H(OCH₂CH₂)_nOH

CAS Number:

25322-68-3

NACRES:

NA.26

PubChem Substance ID:

24887715

UNSPSC Code:

12352104

MDL number:

MFCD00081839

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Properties

Quality Segment

200

product line

BioUltra

form

solid

mol wt

M_r 5000-7000

greener alternative product characteristics

Safer Solvents and Auxiliaries
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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 (SO₄^2-): ≤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 A_max: 0.15, λ: 280 nm A_max: 0.10

greener alternative category

Aligned

SMILES string

C(CO)O

InChI

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

InChI key

LYCAIKOWRPUZTN-UHFFFAOYSA-N

Description

General description

We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Green Chemistry. Polyethylene glycol (PEG) is an eco-friendly, biodegradable polymer widely used in pharmaceuticals and cosmetics. Its non-toxic nature and versatility make it a sustainable choice, derived from renewable resources, contributing to greener product formulations. Click here for more information.

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

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This Item	81210	P4338	81284
Sigma-Aldrich 81255 Poly(ethylene glycol)	Sigma-Aldrich 81210 Poly(ethylene glycol)	Sigma-Aldrich P4338 Poly(ethylene glycol)	Supelco 81284 Poly(ethylene glycol)
description BioUltra, 6,000	description average M_w 1,500	description BioXtra, average mol wt 3,350, powder	description analytical standard, suitable for gel permeation chromatography (GPC), 400
form solid	form solid	form powder	form -
Quality Level 200	Quality Level 200	Quality Level 200	Quality Level 100
mol wt M_r 5000-7000	mol wt average M_w 1,500	mol wt average mol wt 3,350	mol wt M_p ~420, M_w ~400, M_n ~375
impurities insoluble matter, passes filter test, ≤20 mg/kg peroxides (as H₂O₂)	impurities -	impurities ≤0.01% Phosphorus (P), ≤0.1% Insoluble matter	impurities -
cation traces Al: ≤5 mg/kg, Ba: ≤5 mg/kg, Cd: ≤5 mg/kg, Bi: ≤5 mg/kg, Ca: ≤10 mg/kg, Cu: ≤5 mg/kg, Li: ≤5 mg/kg, K: ≤200 mg/kg, Pb: ≤5 mg/kg, Mo: ≤5 mg/kg, Mg: ≤5 mg/kg, Co: ≤5 mg/kg, Fe: ≤5 mg/kg, As: ≤0.1 mg/kg, Zn: ≤5 mg/kg, Na: ≤200 mg/kg, Mn: ≤5 mg/kg, Sr: ≤5 mg/kg, Cr: ≤5 mg/kg, Ni: ≤5 mg/kg	cation traces -	cation traces Ca: ≤0.0005%, Mg: ≤0.0005%, Na: ≤0.05%, Cu: ≤0.0005%, K: ≤0.005%, Pb: ≤0.001%, Al: ≤0.0005%, NH₄⁺: ≤0.05%, Fe: ≤0.0005%, Zn: ≤0.0005%	cation traces -
UV absorption λ: 280 nm A_max: 0.10, λ: 260 nm A_max: 0.15	UV absorption -	UV absorption -	UV absorption -

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Storage Class

11 - Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

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