Factory Supply High Polyethylene glycol 99% Solid CAS25322-68-3

Bioactivity of polyethylene glycol
Description PEG300 is a neutral biocompatible hydrophilic polymer.
Related category
Signal Path >> Other >> Other
Field of Study >> Other
Biochemical reagent
reference
[1]. Bakar B, et al. Evaluation of the neurotoxicity of the polyethylene glycol hydrogel dural sealant. Turk Neurosurg. 2013; 23 (1) : 16-24.

Physical and chemical properties of polyethylene glycol
Density 1.125
Boiling point 250ºC
Melting point -65ºC
Molecular formula C5H12O2
Molecular weight 104.15
Flash point 171ºC
Appearance properties Transparent colorless viscous liquid
Vapor density >1 (vs air)
Vapor pressure <0.01 mm Hg (20 °C)
Refractive index 1.458-1.461
Storage condition
1. Keep the storage container sealed and stored in a cool, dry place in a tight storage container.

2. Store in a cool, dry and ventilated place, and the storage temperature should not exceed 40℃.

stability
1. If used and stored according to specifications, it will not decompose and avoid contact with oxides.

Appearance (20 ° C) Clear liquid White paste smell almost tasteless Solubility (20 ° C)

It can be miscible with water, ethanol and acetone, insoluble in alkane density (40℃)/(g/cm3) about 1.108 ~ 1.115 viscosity /cSt

Below PEG800, about 30 ~ 100 (40℃) PEG1500, about 60 (70℃)

2. After skin contact or splashing, rinse with plenty of water; If the product accidentally gets into the eyes, rinse with plenty of water and seek medical help if necessary. Can wear protective equipment, such as protective gloves, glasses, etc. If inhaled or ingested, move the patient to a ventilated place and seek medical help.

3. Chemical properties: It has the chemical properties of alcohol and can produce esters by esterification with fatty acids. Oxidation occurs when heated in air. The ether bond breaks above 300℃. At room temperature, it is gradually oxidized by air, and the greater the molecular weight, the greater the tendency to be oxidized. Antioxidant such as hydroquinone, hydroxyanisole can be added to stabilize it.

Water solubility H2O: 50 mg/mL, clear, colorless
Molecular structure
1, molar refractive index: 102.12

2, molar volume (cm3/mol) : 300.5

3, isotonic specific volume (90.2K) : 826.3

4, surface tension (dyne/cm) : 57.1

5. Polarizability (10-24cm3) : 40.48

Computational chemistry
1. Reference value of hydrophobic parameter calculation (XlogP) : -1.4

2. Number of hydrogen bond donors: 2

3. Number of hydrogen bond receptors: 2

4. Number of rotatable chemical bonds: 1

5. Topological molecular polar surface area (TPSA) : 40.5

6. Number of heavy atoms: 4

7, surface charge: 0

8. Complexity: 6

9. Number of isotope atoms: 0

10. Determine the number of atomic stereocenter: 0

11. Number of uncertain atomic stereocentes: 0

12. Determine the number of chemical bond structure centers: 0

13. Number of uncertain chemical bond structure centers: 0

14. Number of covalent bond units: 1