Poly(ethylene glycol)

Product Name

Poly(ethylene glycol), BioUltra, 4,000

InChI

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

SMILES string

C(CO)O

InChI key

LYCAIKOWRPUZTN-UHFFFAOYSA-N

product line

BioUltra

form

powder

mol wt

M_r 3500-4500

Quality Level

200

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impurities

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

pH

5.5-7.0 (25 °C, 50 mg/mL in H₂O)

mp

58-61 °C

solubility

H₂O: 50 mg/mL at 25 °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: ≤0.10
λ: 280 nm A_max: ≤0.04

greener alternative category

Aligned