About Polyethylene Glycol (PEG) 4000 Lab Grade
Polyethylene Glycol, (C2nH4n+2On+1), is synthesized by ring-opening polymerization of ethylene oxide. This synthesis process gives PEG a range of molecular weights and distributions from 300 grams per mole to 10,000,000 grams per mole.
PEG 4000 has a molecular weight of 4000 and is a clear, colorless, viscous liquid. Polyethylene Glycol is colorless, inert, odorless, and non-volatile. PEG is biocompatible (it won’t damage tissues or cells), hydrophilic, dissolves readily in water without changing the color odor or taste, and is nontoxic. The number 4000 mentioned with the Polyethylene Glycol 4000, describes its average molecular weight. Lab Grade chemicals possess reasonable purity but do not comply with any official standard for quality or purity. It is recommended to use Lab Alley’s Polyethylene Glycol 4000, Lab Grade be used in training institutes, research labs, and for other commercial applications.
Common Uses and Applications
- PEG 4000 is used in research labs for the precipitation of proteins, viruses, DNA and RNA.
- PEG 4000 is used to synthesize hydrogels
- PEG 4000 is used as an additive in cement to aid in solvency and lubrication
- Biochemistry research labs
- Industrial applications including enhancing materials
- Industrial uses in rubber manufacturing
Polyethylene Glycol (PEG) 4000 Lab Grade Specifications
|Average molecular weight||3600-4400|
|Range of Average Hydroxyl Number, mg KOH/g||25-32|
|Average Number of Repeating Oxyethylene Units||90|
|Density, g/cm3 at 60°C||1.093|
|Melting or Freezing Range, °C||53-59|
|Viscosity at 100°C, cSt||140.4|
Safety and Shipping Information
This chemical is not considered hazardous by the 2012 OSHA Hazard Communication Standard (29 CFR 1910.1200)