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P4338 Sigma-Aldrich

Poly(ethylene glycol)

BioXtra, average mol wt 3,350, powder

Synonym: PEG



Related Categories Essential Chemicals, Materials Science, PEG and Oligo Ethylene Glycol, Poly(ethylene glycol), Poly(ethylene glycol) (PEG) and PEG Solutions,
vapor density   >1 (vs air)
vapor pressure   <0.01 mmHg ( 20 °C)
product line   BioXtra
form   powder
autoignition temp.   581 °F
mol wt   average mol wt 3,350
impurities   ≤0.01% Phosphorus (P)
  ≤0.1% Insoluble matter
solubility   water: soluble (PEG is soluble in water approximately 670 mg/ml, 20 °C)
density   1.0962 g/mL at 60 °C
  1.0764 g/mL at 80 °C
anion traces   chloride (Cl-): ≤0.05%
  sulfate (SO42-): ≤0.05%
cation traces   Al: ≤0.0005%
  Ca: ≤0.0005%
  Cu: ≤0.0005%
  Fe: ≤0.0005%
  K: ≤0.005%
  Mg: ≤0.0005%
  NH4+: ≤0.05%
  Na: ≤0.05%
  Pb: ≤0.001%
  Zn: ≤0.0005%
Ω-end   OH
α-end   OH



1 kg in poly bottle

2 kg in poly drum

500 g in poly bottle

General description

Polyethylene glycol (PEG) is a hydrophilic polymer. It can be easily synthesized by the anionic ring opening polymerization of ethylene oxide, into a range molecular weights and variety of end groups. When crosslinked into networks PEG can have high water content, forming “hydrogels”. PEG is a suitable material for biological applications because it does not trigger an immune response.

Price and Availability

Suggested Laboratory Gloves

Laboratory GlovesThis substance has been tested against several types of hand protection for CE compliance. Click below to find the recommended gloves for handling this product.

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 
Protocols & Articles
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