Molekula
Polyethylene glycol 400
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Polyethylene glycol 400 (PEG 400) is a synthetic polymer widely used as a solvent, humectant, and plasticizer in pharmaceuticals, cosmetics, and industrial applications, including as a vehicle for drug delivery and in food additives. It is a clear, viscous liquid with a CAS number of 25322-68-3 and the molecular formula H(OCH2CH2)nOH. Stable at ambient storage conditions, it carries no signal word for hazard classification.
Molekula supplies Polyethylene glycol 400 in 1 kg packs, from £63.48 inc. VAT. It is in stock for same-day dispatch. Every batch ships with a certificate of analysis, and safety data sheets are available in 5 languages. Larger quantities, up to multi-tonne, are quoted on request.
Example image for illustration only. Other packaging and pack sizes are available.
Often bought together
Pricing & pack sizes
In stock — same-day dispatch
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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1 kg — £52.90 per pack ex VAT · £63.48 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Colourless oil |
| Water | ≤1.0% |
| Ash | ≤0.1% |
| Viscosity | Report |
| pH | 4.5 - 7.5 |
| Dioxane | ≤5ppm |
| Colour | ≤50 Pt-Co |
| Residue on Ignition | ≤0.05% |
| Hydroxyl value | 255-311 mg KOH/g |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 90005683 |
| CAS Number | 25322-68-3 |
| Molecular Formula | H(OCH2CH2)nOH |
| Molecular Weight | - |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 3907.29.00.00 |
| Tariff Code | 3907291190 |
Safety & GHS
Precautionary statements
- P280 Wear protective gloves/protective clothing/eye protection/face protection
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
Synonyms
No alternate names recorded for this product.
Frequently asked questions
What is polyethylene glycol 400 (PEG 400) commonly used for?
PEG 400 is widely used as a solvent, humectant, and plasticizer in pharmaceuticals, cosmetics, and food products, as well as in industrial applications like lubricants and ointments.
What is the chemical formula and molecular weight of PEG 400?
The chemical formula is H(OCH₂CH₂)ₙOH, where *n* averages around 9 (for PEG 400). The molecular weight is approximately 380–420 g/mol (varies by batch).
How should PEG 400 be stored?
Store PEG 400 in a tightly sealed container at ambient temperature, away from direct sunlight and moisture to prevent degradation.
What grades of PEG 400 does Molekula supply?
Molekula supplies PEG 400 to a single defined specification: colourless oil, water ≤1.0%, ash ≤0.1%, residue on ignition ≤0.05%, pH 4.5 - 7.5, dioxane ≤5 ppm, colour ≤50 Pt-Co and hydroxyl value 255-311 mg KOH/g. Please contact us to confirm suitability for your application.
Can Molekula supply PEG 400 in bulk quantities?
Yes, we offer PEG 400 in bulk (drums, IBCs, or custom packaging) for industrial and large-scale applications—minimum order quantities vary by grade.
What documentation is provided with a PEG 400 order?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and batch-specific documentation to ensure compliance with your quality standards.
Where can I buy Polyethylene glycol 400?
Directly from Molekula, which lists Polyethylene glycol 400 in 1 kg packs from £63.48 inc. VAT, with a certificate of analysis for every batch. Larger quantities are quoted on request. Molekula's offices: United Kingdom, France, Spain, Germany, Italy, United States and China.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.