Description
Pure Rawz PEG 400 is a polyethylene glycol 400 solvent. It’s sold as a laboratory supply for research use.
PEG 400 explained
Polyethylene glycol 400 is a low-molecular-weight PEG, a clear, slightly thick liquid. The 400 refers to its average molecular weight.
It’s USP grade and mixes with water.
Mechanism of action
PEG 400 dissolves both water-soluble and many fat-soluble compounds, which makes it useful for making liquids of poorly soluble chemicals.
It absorbs moisture from air, so keep it capped.
What studies say about PEG 400
PEG 400 is a common solvent for oral and topical formulations and for dissolving research compounds that don’t dissolve in water alone.
It’s also used in laxatives at much higher weights.
The primary literature is on PubMed. Here’s a search to start from.
PEG 400 sizes and forms
This listing is a 60ml bottle, priced at $9.27.
Using PEG 400 in the lab
Reconstitution liquids and solvents are the part of a protocol that’s easy to overlook. The wrong liquid can stop a peptide dissolving, change its stability or interfere with an assay.
Match the liquid to the compound and to how long you’ll keep the solution. Single-use work can use sterile water, while multi-draw vials need a preservative.
Buy in the size you’ll use before the expiry date. A large bottle that sits open for months isn’t a saving.
PEG 400 specifications
- Size: Solvent USP Grade – Liquid/60ml
- Use: laboratory research only
Keeping it fresh
Store solvents tightly capped at room temperature, away from heat, flames and direct light. Label the container with the opening date. It saves guesswork later.
Our reconstitution and solvent range
Different compounds need different liquids. Here’s how our range lines up:
- Bacteriostatic Water: the default for most peptides, with 0.9% benzyl alcohol so a vial can be drawn from for several weeks
- Sterile Water: no preservative, for single-use mixing or assays where benzyl alcohol would interfere
- Acetic Acid Reconstitution Solution: dilute acid for peptides that dissolve poorly in water, such as IGF-1 LR3
- Phosphate Buffered Solution: holds the pH near 7.4 for dilutions and cell work
- L-Glutathione Reconstitution Solution: adds an antioxidant for peptides prone to oxidation
- Reconstitution Solution: a general-purpose sterile diluent for the shelf
- DMSO Dimethyl Sulfoxide: a strong solvent for stock solutions of compounds that won’t dissolve in water
- Benzyl Alcohol USP Grade: preservative and co-solvent for oil-based solutions
- Grape Seed Oil 100% Filtered: a light carrier oil for fat-soluble compounds
Safe handling
Wear gloves and eye protection, work in a ventilated area, and keep flammable solvents away from heat and open flames. Close the bottle after each use.
Related products
- Reconstitution Solution: Our reconstitution solution is a sterile 10mL vial of liquid for dissolving freeze-dried research peptides.
- Ethyl Oleate USP Grade: Ethyl oleate is the ethyl ester of oleic acid.
- Benzyl Alcohol USP Grade: Benzyl alcohol is a simple aromatic alcohol used as a preservative and solvent.
- Sterile Water: Sterile water is purified water that has been sterilized and sealed in a vial.
- Grape Seed Oil 100% Filtered: Grape seed oil is pressed from grape seeds left over from winemaking.
For the wider range, visit our reconstitution and lab supplies sections.
Similar compounds compared
Reconstitution Solution: Our reconstitution solution is a sterile 10mL vial of liquid for dissolving freeze-dried research peptides.
Phosphate Buffered Solution: Phosphate buffered solution is salt water with sodium and potassium phosphate added to hold the pH near 7.4, close to body fluid.
Ethyl Oleate USP Grade: Ethyl oleate is the ethyl ester of oleic acid. It’s a thin, clear liquid and ours is USP grade.
PEG 400 questions
Does it come with a certificate of analysis?
Yes. Every batch is tested, and we’ll email the certificate of analysis for your batch number on request.
Can it be used in people or animals?
No. It’s sold for laboratory research only and isn’t approved for human or veterinary use.
How should I store it?
Follow the storage section above. In short: cold and dark for freeze-dried vials, room temperature and dry for capsules, tablets, powders and liquids, unless the label says otherwise.
Is PEG 400 in stock?
Yes. It’s in stock and ships from our warehouse after your order clears.
Buy PEG 400 from Pure Rawz
PEG 400 is in stock at $9.27. Add it to the cart and check out in a couple of minutes.
Need more for the same project? Have a look at our reconstitution and lab supplies.
For laboratory research use only. Not for human or veterinary use. These statements have not been evaluated by the FDA.
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