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Polyethylene Glycol 4000

Price: £22.80
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Stock Availability
On Shelf - Approx. UK delivery date: Wednesday the 17th September 2025*
In bulk stock - ships within 10 - 12 Working Days (Excluding weekends and public holidays)
4 to 6 weeks approx. (Not guaranteed)
UK Shipping

Unfortunately, we are not currently accepting orders for Northern Ireland.

We can only ship to the following postcodes where a Royal Mail postal option has been chosen at checkout.

AB, DD, DG3, DG4, DG6 - DG9, EH, FK, G, HS, IM, IV, KA, KW, KY, ML, PA, PH, PO30 - PO41, TD, TR21 - TR25, ZE

* We will always try to ship as early as possible. Delivery could be much quicker than stated but is not guaranteed

Polyethylene glycol (PEG) is a polyether compound with many applications from industrial manufacturing to medicine. The structure of PEG is (note the repeated element in parentheses):

H-(O-CH2-CH2)n-OH

PEG is also known as polyethylene oxide (PEO) or polyoxyethylene (POE), depending on its molecular weight.

  • Molecular Formula: H(OCH2CH2)nOH
  • Molecular Weight: average 4000 g/mol
  • Melting Point: 53 to 58 °C
  • Boiling Point:  250°C (1013 hPa)
  • Flash Point:  250°C

Hazard Phrases: Not considered harmful under normal laboratory conditions

Cas No: 25322-68-3
Einecs No: 500-038-2

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Source Chemicals Ltd