Toluene diisocyanate manufacturer Knowledge D-(-)-Threose D-(-)-Threose

D-(-)-Threose D-(-)-Threose

D-(-)-threose structural formula

Structural formula

Business number 0291
Molecular formula C4H8O4
Molecular weight 120.11
label

D-threose,

Sutang,

Threose

Numbering system

CAS number:95-43-2

MDL number:MFCD00043042

EINECS number:202-418-0

RTECS number:None

BRN number:1721696

PubChem number:24900449

Physical property data

1. Properties: deliquescent crystals, sweet taste.

2. Density (g/mL, 20℃): Undetermined

3. Relative vapor density (g/mL, air=1): Undetermined

4. Melting point (ºC): 126-136

5. Boiling point (ºC, normal pressure): Undetermined

6. Boiling point (ºC, KPa): Undetermined

7. Refractive index: Undetermined

8. Flash point (ºC): Undetermined

9. Specific rotation (º): Undetermined

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10. Autoignition point or ignition temperature (ºC): Undetermined

11. Vapor pressure (mmHg, ºC): Undetermined

12. Saturated vapor pressure (kPa, ºC): Undetermined

13. Heat of combustion (KJ/mol): Undetermined

14. Critical temperature (ºC): Undetermined

15. Critical pressure (KPa): Undetermined

16. Log value of oil-water (octanol/water) distribution coefficient: Undetermined

17. Explosion upper limit (%, V /V): Undetermined

18. Lower explosion limit (%, V/V): Undetermined

19. Solubility: Easily soluble in water, slightly soluble in alcohol, difficult to Soluble in ether and petroleum ether.

Toxicological data

None

Ecological data

None

Molecular structure data

1. Molar refractive index: 24.82

2. Molar volume (cm3/mol): 70.7

3. Isotonic specific volume (90.2K ): 204.9

4. Surface tension (dyne/cm): 70.5

5. Polarizability (10-24cm3): 9.84

Compute chemical data

1. Hydrophobic parameter calculation reference value (XlogP): -1.9

2. Number of hydrogen bond donors: 3

3. Number of hydrogen bond acceptors: 4

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4. Number of rotatable chemical bonds: 0

5. Number of tautomers:

6. Topological molecular polar surface area (TPSA): 69.9

7. Number of heavy atoms: 8

8. Surface charge: 0

9. Complexity: 84.1

10. Number of isotope atoms : 0

11. Determine the number of atomic stereocenters: 2

12. Uncertain number of atomic stereocenters: 1

13. Determine the chemical bond configuration Number of centers: 0

14, Number of uncertain chemical bond stereocenters: 0

15, Number of covalent bond units: 1

Properties and stability

None

Storage method

None

Synthesis method

None

Purpose

None

This article is from the Internet, does not represent the position of Toluene diisocyanate reproduced please specify the source.https://www.allhdi.com/archives/39615

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