[Supply and sales of 1,3-butanediol] Do you know the specific physical and chemical properties of 1,3-butanediol?

It is understood that 1,3-butanediol is colorless and slightly The bitter-sweet viscous liquid has the characteristics of glycol reactivity, odorless, low toxicity, and good water solubility. It is mainly used in organic synthesis. It is the raw material of polyester resin, alkyd resin, and plasticizer. , raw materials for polyurethane coatings, wetting agents and softeners, intermediates for medicines and dyes, surfactants, plasticizers, hygroscopic agents, coupling agents, solvents, food additives and flavors.

The specific physical and chemical properties of 1,3-butanediol are as follows:

1. Properties: colorless viscous liquid with bitter and sweet taste.

2. Boiling point (oC, 101.3kPa): 203~204

3. Boiling point (oC, 1.60kPa): 108

4. Boiling point (oC ,1.33kPa): 98

5. Melting point (oC): -54

6. Relative density (g/mL, 20/4oC): 1.0053

7. Relative vapor density (g/mL, air = 1): 3.2

8. Refractive index (n20oC): 1.441

9. Refractive index (n25oC): 1.439

10. Viscosity (mPa·s, 20oC): 130.3

11. Viscosity (mPa·s, 25oC): 103.9

12. Viscosity (mPa· s, 35oC): 89

13. Flash point (oC, opening): 121

14. Fire point (oC): 392.8

15. Heat of evaporation (KJ/mol, b.p.): 58.49

16. Heat of combustion (KJ/mol, liquid): 2491.2

17. Vapor pressure (kPa, 74oC): 0.067

　18. Critical temperature (oC): 290.8

　19. Critical pressure (MPa): 3.89

　20. Lower explosion limit (%, V/V): 1.9

21. Solubility: Miscible with water, ethanol, acetone, methyl ethyl ketone, and dibutyl phthalate. Insoluble in aliphatic hydrocarbons, benzene, toluene, carbon tetrachloride, phenol, 2-aminoethanol, mineral oil, cottonseed oil, etc.

　22. Boiling point (oC): 207

　23. Critical density (g·cm-3): 0.295

　24. Critical volume (cm3·mol -1): 305

25. Critical compression factor: 0.217

26. Eccentricity factor: 1.146

27. Solubility parameter (J·cm-3 )0.5: 26.974

28. vanderWaals area (cm2·mol-1): 8.310×109

29. vanderWaals volume (cm3·mol-1): 56.990

　30. Gas phase standard combustion heat (enthalpy) (kJ·mol-1): -2570.0

　31. Gas phase standard claimed heat (enthalpy) (kJ·mol-1): -433.2

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　32. Liquid phase standard combustion heat (enthalpy) (kJ·mol-1): -2502.2

　33. Liquid phase standard claimed heat (enthalpy) (kJ·mol-1): -501.0

　34. Liquid phase standard hot melt (J·mol-1·K-1): 236.