Polyethylene glycol PEG Poly(ethylene glycol) CAS 25322-68-3 is a polyether 
compound with many applications from industrial manufacturing to medicine. PEG is also known as polyethylene oxide (PEO) or polyoxyethylene (POE), depending on its molecular weight. PEG and PEO are liquids or low-melting solids, depending on their molecular weights. PEGs are prepared by polymerization of ethylene oxide and are commercially available over a wide range of molecular weights from 300 g/mol to 10,000,000 g/mol. While PEG and PEO with their chemical properties are nearly identical. They vary in consistency from liquid to solid, depending on the molecular weight. Different molecular weights find use in different applications, including as surfactants, in foods, in cosmetics, in pharmaceutics, in biomedicine, as dispersing agents, as solvents, in ointments, in suppository bases, as tablet excipients, and as laxatives. Some specific groups are lauromacrogols, nonoxynols, octoxynols, and poloxamers.
PEG is soluble in water, methanol, ethanol, acetonitrile, benzene, and dichloromethane, and is insoluble in diethyl ether and hexane.
Specification
Type |
Appearance (25Co)
|
Color (Pt-Co) max
|
Hydroxyl value (mgKOH/g)
|
M.W.
|
pH
|
PEG 200
|
Colorless liquid
|
40
|
510-623
|
180-220
|
5.0-7.0
|
PEG 300
|
Colorless liquid
|
40
|
340-416
|
270-330
|
5.0-7.0
|
PEG 400
|
Colorless liquid
|
40
|
255-311
|
360-440
|
5.0-7.0
|
PEG 600
|
Colorless liquid
|
40
|
170-208
|
540-660
|
5.0-7.0
|
PEG 800
|
White paste
|
40
|
127-156
|
720-880
|
5.0-7.0
|
PEG 1000
|
White paste
|
40
|
102-125
|
900-1100
|
5.0-7.0
|
PEG 1500
|
White solid
|
40
|
68-84
|
1350-1650
|
5.0-7.0
|
PEG 2000
|
White flake
|
50
|
51-63
|
1800-2200
|
5.0-7.0
|
PEG 3000
|
White flake
|
50
|
34-42
|
2700-3300
|
5.0-7.0
|
PEG 4000
|
White flake
|
50
|
26-32
|
3600-4400
|
5.0-7.0
|
PEG 6000
|
White flake
|
50
|
16-21
|
5400-7000
|
5.0-7.0
|
PEG 8000
|
White flake
|
50
|
12-16
|
7200-8800
|
5.0-7.0 |
Application
1) PEG can be used in pharmaceuticals, cosmetics, chemical engineering, rubber, metal finishing, pesticide, pigment and spinning & weaving fields.
2) PEG is also one of the main materials of ester type surface active agent.
Packing
PEG200-1000: Iron or plastic barrel. Net weight 50Kg, 200Kg.
PEG2000-8000: Plastic woven bag lined with plastic bag or compound bag. Net weight 25kg.
Storage
This product does not belong to dangerous chemicals. Store in a cool, dry, ventilated place. Avoid moisture, direct sunlight and collision. Handle with care.
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