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PEG Polyethylene Glycol CAS 25322-68-3

The properties vary depending on the relative molecular weight, ranging from colorless and odorless viscous liquids to waxy solids. Those with a molecular weight of 200-600 are liquids at room temperature, while those with a molecular weight above 600 gradually become semi-solid As the average molecular weight varies, the properties also differ. From colorless and odorless viscous liquid to waxy solid. As the molecular weight increases, its moisture absorption capacity decreases accordingly. This product is soluble in water, ethanol, and many other organic solvents
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  • 25322-68-3

  • bosschem

  • 25322-68-3

Polyethylene Glycol (PEG )

CAS 25322-68-3

Alais: 1,2-ethanediol,homopolymer

Molecular formula: (C2H4O)nH2O

Molecular weight: 0

Structural formula:

聚乙二醇 结构式

1. Performance and use

It has a wide range of applications in industries such as cosmetics, pharmaceuticals, chemical fibers, rubber, plastics, papermaking, painting, electroplating, pesticides, metal processing, and food processing.

2. Technical indicators

Poly(ethylene glycol) Basic information
Product Name: Poly(ethylene glycol)
CAS: 25322-68-3
MF: N/A
MW: 0
EINECS: 500-038-2
Mol File: 25322-68-3.mol
Poly(ethylene glycol) Chemical Properties
Melting point 64-66 °C
Boiling point >250°C
density 1.27 g/mL at 25 °C
vapor density >1 (vs air)
vapor pressure <0.01 mm Hg ( 20 °C)
refractive index n20/D 1.469
Fp 270 °C
storage temp. 2-8°C
solubility H2O: 50 mg/mL, clear, colorless
form waxy solid
color White to very pale yellow
Specific Gravity 1.128
PH 5.5-7.0 (25℃, 50mg/mL in H2O)
Water Solubility Soluble in water.
λmax λ: 260 nm Amax: 0.6
λ: 280 nm Amax: 0.3
Sensitive Hygroscopic
Merck 147,568
Stability: Stable. Incompatible with strong oxidizing agents.
NIST Chemistry Reference Polyethylene glycol(25322-68-3)
EPA Substance Registry System Polyethylene glycol (25322-68-3)
Type Index Appearance 25℃ Colour(Pt-Co) Hydroxyl value(mgKOH/g) Molecular Weight 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 waxy solid ≤ 40 102~125 900~1100 5.0~7.0
PEG 1500 White waxy solid ≤ 40
1350~1650 5.0~7.0
PEG 2000 White waxy solid ≤ 50 51~63 1800~2200 5.0~7.0
PEG 3000 White solid ≤ 50 34~42 2700~3300 5.0~7.0
PEG 4000 White solid ≤ 50 26~32 3600~4400 5.0~7.0
PEG 6000 White solid ≤ 50 16~21 5400~7000 5.0~7.0
PEG 8000 White solid ≤ 50 12~16 7200~8800 5.0~7.0
Test Method -- GB/T 3143 GB/T 7383 Calculated GB/T 6368

3. Packaging and storage

Package : 200kg/drums 

Storage : Storage conditions 2-8 ° C

4. Related keywords  

Polyethylene Glycol

CAS 25322-68-3

lubricant

PEG

polyethylene glycol 3350

peg glycol

polyethylene glycol peg 400




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