Factory Supply High Quality Propylene Glycol 99.6% liquid 57-55-6

Physical and chemical properties of propylene glycol
Density 1.0± 0.1g /cm3
Boiling point 184.8±8.0 °C at 760 mmHg
Melting point -60ºC
Molecular formula C3H8O2
Molecular weight 76.094
Flash point 107.2±0.0 °C
Precision mass 76.052429
PSA 40.46000
LogP minus 1.34
Appearance properties Transparent viscous liquid
Vapor density 2.62 (vs air)
Vapor pressure 0.2±0.8 mmHg at 25°C
Refractive index 1.430
Storage condition
1. This product should be sealed in a cool and dry place. Keep away from fire and heat. It can be stored in containers made of iron, mild steel, copper, tin, stainless steel or resin-coated containers.

2. Although this product does not spontaneously ignite, it is combustible. Long-term storage does not deteriorate, but the opening absorbs moisture. Storage and transportation containers should be made of galvanized iron drums, aluminum or stainless steel. Storage and transportation in accordance with the general provisions of low toxic chemicals.

stability
1. Flammable liquid. It is hygroscopic and does not corrode metal. It reacts with dibasic acid to form polyester, reacts with nitric acid to form nitric ester, and reacts with hydrochloric acid to form chlorohydrin. It is heated with dilute sulfuric acid at 170℃ to form propionaldehyde. Oxidation with nitric acid or chromic acid to produce glycolic acid, oxalic acid, acetic acid, etc. Reacts with aldehydes to form acetals. Dehydration of 1, 2-propylene glycol produces propylene oxide or polyethylene glycol.

2. Toxicity and irritants are very low and no victims have been identified to date. Rats were injected intravenously and intraperitoneally with LD507000~8000mg/kg and orally with LD502800mg/kg. However, it has also been reported that when added to food and drink in high doses in one sitting, there is a risk of causing fatal sleepiness and kidney disorders.

3. It exists in tobacco leaves and smoke.

Water soluble miscible
Molecular structure
1, molar refractive index: 18.97

2, molar volume (cm3/mol) : 73.4

3. Isotropic specific volume (90.2K) : 182.3

4, surface tension (dyne/cm) : 38.0

5. Polarizability (10-24cm3) : 7.52

Computational chemistry
1. Reference value for calculating hydrophobic parameters (XlogP) : None

2. Number of hydrogen bond donors :2

3. Number of hydrogen bond receptors :2

4. Number of rotatable chemical bonds :1

5. Number of tautomers: None

6. Topological molecular polar surface area 40.5

7. Number of heavy atoms :5

8. Surface charge :0

9. Complexity :20.9

10. Number of isotope atoms :0

11. Determine the number of protonic centers :0

12. Number of uncertain atomic stereocentes :1

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

14. Number of uncertain chemical bond stereocenter :0

15. Number of covalent bond units :1

more
1. Properties: Colorless viscous and stable water-absorbing liquid, almost tasteless and odorless, flammable, low toxicity.

2. Boiling point (ºC,101.3kPa) : 187.3

3.Melting point (ºC, flow point) : -60

4. Relative density (g/mL,20/20ºC) : 1.0381

5. Relative density (20℃, 4℃) : 1.0362

6. Refractive index (n20ºC) : 1.4329

7. Viscosity (mPa·s,0ºC) : 243

8. Viscosity (mPa·s,20ºC) : 56.0

9. Viscosity (mPa·s,40ºC) : 18

10. Flash point (ºC, closed) : 98.9

11. Flash point (ºC, open) : 107

12. Ignition point (ºC) : 421.1

13. Combustion heat (KJ/mol, constant pressure) : 1827.5

14. Heat of combustion (KJ/mol, constant volume) : 1825.0

15. Heat of combustion (KJ/mol,20ºC,101.3kPa) : 1853.1

16. Heat of evaporation (KJ/kg) : 538.1

17. Heat of formation (KJ/mol,20ºC) : 500.3

18. Specific heat capacity (KJ/(kg·K),20ºC, constant pressure) : 2.48

19. Critical temperature (ºC) : 351

20. Critical pressure (MPa) : 5.9

21. Thermal conductivity (W/(m·K)) : 0.217714

22. Lower explosive limit (%,V/V) : 2.6

23. Upper explosion limit (%,V/V) : 12.5

24. Coefficient of expansion (K-1,20ºC) : 0.000695

25. Coefficient of bulk expansion (k-1,55ºC) : 0.000743

26. Vapor pressure (kPa,55ºC) : 0.19

27. Solubility: miscible with water, ethanol, ether, chloroform, acetone and other organic solvents. Although the solubility to hydrocarbons, chlorinated hydrocarbons, fats is small, but the solubility of ethylene glycol is stronger.

28. Relative density (25℃, 4℃) : 1.0328

29. Refractive index (n25) at normal temperature: 1.4314

30. Solubility parameter (J·cm-3) 0.5:29.516

31. van der Waals area (cm2·mol-1) : 6.960×109

32. van der Waals volume (cm3·mol-1) : 46.760

33. Gas phase standard heat of combustion (enthalpy)(kJ·mol-1) : -1902.55

34. The gas phase standard claims heat (enthalpy)(kJ·mol-1) : -421.29

35. Liquid phase standard heat of combustion (enthalpy)(kJ·mol-1) : -1838.14

36. The liquid phase standard claims heat (enthalpy)(kJ·mol-1) : -485.72

37. Liquid phase standard hot melt (J·mol-1·K-1) : 189.9