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Polyethylene Glycol (PEG)

PEG
CAS 25322-68-3 · Formula C2H4O (repeat units)

A water-soluble polyether whose properties scale predictably from mobile liquids to solid waxes with molecular weight. It is used as a water-soluble solvent and humectant, as a lubricant and processing aid, and as a base for nonionic surfactant and ester derivatives.

Part of Demulsifiers / Deoilers · PPG & Non-Silicone Process Aids · Seed Treatment Coatings & Binders
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HS Code
3907.20
At a Glance
Material Family
Glycols & Polyols
Record Type
Pure compound
Primary Role
Surfactancy · Film Formation
Functional Roles
Surfactancy Film Formation Viscosity Modification Solvency Plasticizing Moisture Control Lubrication
INCI Name
PEG-9M
CosIng Functions
BINDINGEMULSION STABILISINGVISCOSITY CONTROLLING
Industries Served
Agriculture Beauty & Personal Care Coatings & Construction HI&I Cleaning Industrial Manufacturing Plastics & Polymers
Applications & Use Cases
  • ▸ Solvent and humectant: Water-soluble carrier and moisture-retaining agent.
  • ▸ Lubricant and processing aid: Lubricity and binding in industrial processing.
  • ▸ Dispersant: Wetting and dispersing in formulated systems.
  • ▸ Chemical intermediate: Backbone for nonionic surfactants and PEG esters.
Physical Properties
Appearance
Clear viscous liquid to white waxy solid (grade/MW dependent), typical
General Formula
HO-(CH2CH2O)n-H, typical
Molecular Weight Range
200 to 8000+ g/mol (grade dependent), typical
Water Solubility
Soluble in water (low-MW miscible), typical
pH 5% Solution
4.5 to 7.5, typical
Density
1.10 to 1.21 g/cm3 at 20 C, typical
Flash Point
>200 C (high-MW grades), typical
Safety & Handling
Full SDS available on request

A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.

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HS / Tariff Classification
Harmonized System (HS) Code — 6-digit international heading
3907 . 20
Chapter 39
Plastics and articles thereof
Heading 39.07
Internationally harmonized (WCO HS)
Subheading 3907.20
6-digit international code — national tariff line adds further digits
Chemical Identity
CAS Number
25322-68-3
Molecular Formula
C2H4O (repeat units)
INCI Name
PEG-9M
Synonyms & Trade Names
PEG Macrogol Polyethylene oxide Polyoxyethylene Poly(ethylene glycol) Polyglycol Alpha-Hydro-omega-hydroxypoly(oxy-1,2-ethanediyl)
Full Description

Polyethylene glycol (CAS 25322-68-3) is a poly(oxyethylene) polymer supplied across a range of molecular weights, from liquids to waxy solids. It is used as a water-soluble solvent and humectant, as a lubricant and processing aid, and as a base for nonionic surfactant and ester derivatives.

Frequently Asked Questions

What is poly(oxy-1,2-ethanediyl), and is it the same as polyethylene glycol?

Poly(oxy-1,2-ethanediyl) is the systematic name for polyethylene glycol (PEG), the poly(oxyethylene) polymer under CAS 25322-68-3. It is supplied across a range of molecular weights, from clear liquids to waxy solids depending on chain length.

What is PEG used for in industrial formulations?

It serves as a water-soluble solvent and humectant carrier, as a lubricant and binding/processing aid, and as a dispersant in formulated systems. It is also a chemical intermediate, forming the backbone for nonionic surfactants and PEG esters.

Is polyethylene glycol water soluble?

Lower and mid molecular-weight PEG grades are water soluble and function as water-soluble carriers and humectants. Solubility and physical form (liquid vs. waxy solid) shift with molecular weight, so specify the target grade when requesting material.

What is the HS code for polyethylene glycol?

It classifies under HS 3907.20 (polyacetals, other polyethers and epoxide resins in primary forms: other polyethers). Confirm the destination-country tariff line and any grade-specific documentation with our team before export.

What is the cost of bulk polyethylene glycol, and what packaging is available?

Pricing depends on molecular-weight grade, volume, and packaging, since PEG ships as liquids or waxy solids. Request a bulk quote with your target grade and drum/tote/IBC requirement, along with the CoA and SDS, and we will scope availability.

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Disclaimer. Information on this page — including properties, identifiers, hazard, transport (DOT/UN) and tariff (HS) classifications, and applications — is provided for general reference and is compiled from authoritative public sources (e.g. PubChem/ECHA, 49 CFR 172.101, the Harmonized Tariff Schedule). Values are typical and are not a guaranteed specification; the Certificate of Analysis (CoA) for the lot purchased governs. Products are sold for industrial and professional use only. Nothing here is a medical, health, or efficacy claim or advice. Always consult the current Safety Data Sheet (SDS) before handling, storage, transport or disposal, and confirm regulatory status, classification and suitability for your application and jurisdiction. Hazard, transport and tariff classifications must be verified for your specific shipment. RawSource makes no warranty, express or implied, and assumes no liability for use of this information. Trademarks. Third-party trademarks and brand names are the property of their respective owners; any reference is nominative — used only to identify a comparable product — and does not imply affiliation with, sponsorship by, or endorsement by the trademark owner.
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