Chemical Name:
Polyethylene Glycol
Trade Names:
PEG 3350/Pharmaceutical grade
Introduction:
Polyethylene glycols (PEGs) are condensation polymers of ethylene oxide and water with the general formula H(OCH2CH2)nOH. They are the most commercially important type of polyether. The low molecular weight compounds up to 700 are colorless, odorless viscous liquids with a freezing point from -10˚C (diethylene gycol), while polymerized compounds with higher molecular weight than 1,000 are wax like solids with melting point up to 67˚C. While PEGs with different molecular weights find use in different applications and have different physical properties (e.g. viscosity) due to chain length effects, their chemical properties are nearly identical.
The numbers that are often included in the names of PEGs indicate their average molecular weights, e.g. a PEG with n=9 would have an average molecular weight of approximately 400 and would be labeled PEG 400. Most PEGs include molecules with a distribution of molecular weights, i.e. they are polydisperse.
PEGs are soluble in water and most organic solvents.
General Applications:
Polyethylene glycols are non-toxic, odorless, neutral, lubricating, nonvolatile and nonirritating and are used in a variety of pharmaceuticals and in medications as a solvent, dispersing agent, ointment and suppository bases, vehicle, and tablet excipient.
Specification
| TEST | STANDARD | Unit | Ref |
| Completeness an d color of Solution:, 5g/50ml of Water | Slightly Hazy | – | USP39-NF34 |
| Viscosity @ 98.9˚C | 76-110 | Cst | USP39-NF34 |
| pH, 5% Solution in Water | 4.5-7.5 | – | USP39-NF34 |
| Residue on ignition | Max 0.1 | %wt | USP39-NF34 |
| Assay (Average Molecular Weight) | 3015-3685 | g/mol | USP39-NF34 |
| Heavy metals | Max 5 | ppm | USP39-NF34 |
| Ethylene Oxide & 1,4-Dioxane | Max. 10
(for each of them) |
ppm | USP39-NF34 |
Packaging:
|
Packaging Type |
Net weight |
No. of bags per pallet |
No. of pallets in a 20 FLC |
Shelf life |
IMCO Class |
|
PE bags |
25 Kgs |
40 |
20 |
2 yrs |
Non-Imco |
Notice:
We can produce other types of Pharmaceutical grades of polyethylene Glycols (PEGs), moreover customized packing will be available according to customer’s request.
Safety, Handling & Storage:
Full information on the safety, handling and storage of pharmaceutical PEGs is available in the corresponding Material Safety Data Sheet (MSDS).
