Polyethylene Glycol 4000 (PEG 4000, Pharmaceutical Grade)
CAS Number: 25322-68-3
Pharmaceutical grade PEG 4000 is a solid-grade polyethylene glycol with an average molecular weight of 3500–4500 Da, used as a binder, plasticizer, lubricant, and solubilizer in solid and semisolid dosage forms. Its waxy consistency and water solubility make it suitable for melt granulation, tablet coating, and suppository bases. It is non-irritating and biocompatible for multiple administration routes.
Technical Specifications
| appearance | White waxy solid or flakes |
| average MW (Da) | 3500–4500 |
| pH (5% solution) | 4.5–7.5 |
| loss on drying (%) | ≤0.5 |
| melting point (°C) | 53–59 |
| hydroxyl value (mg KOH/g) | 25–32 |
Applications
- Tablet coating binder and plasticizer
- Melt granulation binder
- Suppository base
- Water-soluble tablet lubricant
- Film coating plasticizer
Key Features
- Water-soluble lubricant and plasticizer
- Suitable for melt processing
- Non-irritating and biocompatible
- USP/NF, EP compliant
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CAS Number
25322-68-3
Category
Pharmaceutical ExcipientsAvailability
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