polyethylene glycol CAS 25322-68-3, polyethylene glycol, CAS 25322-68-3
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Antioxidants (such as 0.25% to 0.5% phenothiazine) need to be added to prevent oxidation.
25322-68-3
HO(CH₂CH₂O)ₙH
0
500-038-2
| CAS | 25322-68-3 |
| Molecular formula | HO(CH₂CH₂O)ₙH |
| Molecular weight | 0 |
| EIENCS | 500-038-2 |
| Form | waxy solid |
| Melting point | 64-66 °C |
| boling point | >250°C |
| Density | 1.27 g/mL at 25 °C |
| Solubility | H2O: 50 mg/mL, clear, colorless |
| PKA | / |
| Color | White to very pale yellow |
| Storage temp | 2-8°C |
Medicine and Cosmetics
Pharmaceutical preparation bases, humectants, lubricants (such as ointments, lotions);
The concentration in the injection should be ≤30% (V/V) to prevent hemolysis.
Industrial uses:
Rubber/Plastic: Plasticizers, dispersants, antistatic agents;
Textile/Chemical fiber: Softener, wetting agent, dye carrier;
Metalworking: cutting fluids, polishing agents, welding agents;
Food industry: Approved by the FDA as a food additive (limited to food grade).
Others:
Pesticide emulsifiers, papermaking lubricants, ceramic adhesives.
Reactivity
It has the properties of an alcohol and can be esterified with fatty acids.
Antioxidants (such as 0.25% to 0.5% phenothiazine) need to be added to prevent oxidation.
Toxicity:
Low toxicity: LD₅₀=33750 mg/kg (oral in rats), GRAS certified (FDA);
Local irritation: Mucosal contact may cause pain, and high-concentration injections can lead to hemolysis (>40% V/V).
Safe operation
Avoid contact with skin and eyes (Safety term S24/25);
Store in a cool and dry place, and keep sealed to prevent moisture.
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