Polyethylene Glycol 4000 (PEG 4000)

EXPIRING 15/05/2027 - this clearance price is only while stocks last.

This Polyethylene Glycol 4000 (PEG 4000) is a laboratory-grade polyethylene glycol polymer. It is also referred to as PEG, PEG 4000, PEG 4k, macrogols, poly(ethylene glycol) and polyethyleneglycol.

This water-soluble polymer is widely used as an excipient, osmotic agent and formulation additive in laboratory, analytical and formulation applications. Chemical identifiers include CAS RN 25322-68-3, EC Number 500-038-2 and molecular formula represented as (-CH2CH2O-)n.

Composition & Molecular Characteristics

It has an average molecular weight in the range 3600 - 4400 and a reported molecular weight distribution commonly stated as 3,600 - 4,400. The material typically appears as a white powder, crystals or flakes and is offered as a formulation-grade polymer suitable for sample preparation, reagent formulation and general laboratory use.

Physical & Chemical Properties

This chemical is a solid at ambient temperature with a melting point of approximately 50 - 60°C. A 10% solution in water produces a clear to faintly turbid, colourless solution; the pH of a 5% aqueous solution typically falls between 4.5 - 8.0.

The substance is biodegradable and not classified as a hazardous substance or mixture for transport or storage under current classification criteria.

Packaging & Certification

It is supplied in a square white high-density polyethylene (HDPE) bottle with a screw closure and a capacity of 750ml. The packaging is UN certified for the intended powder form.

Storage, Shipping & Handling

Store this polyethylene glycol 4000 in a cool, well-ventilated area and keep containers tightly closed to avoid moisture uptake. Recommended storage temperature is +20°C, and the product is suitable for ambient shipping.

To minimise risk during handling, avoid the formation or spread of dust in the air; keep the material away from direct contact with water or high humidity before use.

Disposal & Environmental Considerations

As a biodegradable polymer, PEG 4000 should be transferred to a suitable container and arranged for collection by a specialised disposal company where required. Dispose of in accordance with local regulations and standard laboratory waste procedures for non-dangerous solids.

Regulatory & Tariff Information

Harmonised Tariff Code: 3907291190. Shipping temperature: Ambient. UN Certified. Not classified as hazardous for transport in its supplied form.

Product Features

• High Purity Polymer: Suitable for analytical and formulation work, providing consistent performance in reagent preparation and sample processing.
• Versatile Laboratory Uses: Useful as an excipient, osmotic agent, formulation additive and sample preparation aid across research and quality environments.
• Average Molecular Weight 3600 - 4400: Provides predictable physical properties for formulation, stabilisation and viscosity control.
• Water Soluble: Readily dissolves to form clear to faintly turbid solutions, simplifying sample preparation and dilution steps.
• Not Classified As Hazardous: Facilitates handling, storage and disposal under standard non-dangerous goods procedures, reducing compliance burden.
• Biodegradable Polymer: Environmentally preferable characteristic compared with some synthetic alternatives, supporting sustainable laboratory practice.