DL-Lactide

admin 5月 11th, 2024 News

DL-lactide structural formula

Structural formula

Business number	02A9
Molecular formula	C6H8O4
Molecular weight	144.13
label	3,6-dimethyl-1,4-dioxane-2,5-dione, lactide, 3,6-Dimethyl-1,4-dioxane-2,5-dione, DL-Dilactide, Lactide

Numbering system

CAS number:95-96-5

MDL number:MFCD00011685

EINECS number:202-468-3

RTECS number:JH1100000

BRN number:82121

PubChem number:24858300

Physical property data

1. Characteristics: Undetermined

2. Density (g/mL, 25?): Undetermined

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

4. Melting point (ºC): 116-119

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

6. Boiling point (ºC, 8mmHg): 142

7. Refractive index: Undetermined

8. Flash point (ºC): 180

9. Specific rotation ( º): Undetermined

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 Determined

15. Critical pressure (KPa): Undetermined

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

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

18. Explosion lower limit (%, V/V): Undetermined

19. Solubility: Undetermined

Toxicological data

1. Other multiple dose toxicity: Oral TDLo for dogs: 35mg/kg/2W-I; Oral TDLo for dogs: 9100mg/kg/13W-I;

Ecological data

None yet

Molecular structure data

1. Molar refractive index: 31.20

2. Molar volume (cm³/mol): 125.0

3. Isotonic specific volume (90.2K ): 282.4

4. Surface tension (dyne/cm): 26.0

5. Polarizability (10-24cm3): 12.37

Compute chemical data

1. Reference value for hydrophobic parameter calculation (XlogP): 0.6

2. Number of hydrogen bond donors: 0

3. Number of hydrogen bond acceptors: 4

4. Number of rotatable chemical bonds: 0

5. Number of tautomers: 3

6. Topological molecule polar surface area 52.6

7. Number of heavy atoms: 10

8. Surface charge: 0

9. Complexity: 155

10. Number of isotope atoms: 0

11. Determine the number of atomic stereocenters: 0

12. Uncertain number of atomic stereocenters: 2

13. Determine chemical bonds.Number of stereocenters: 0

14. Number of uncertain chemical bond stereocenters: 0

15. Number of covalent bond units: 1

Properties and stability

None yet

Storage method

None yet

Synthesis method

Using D,L-lactic acid as raw material, D,L-lactide is synthesized through dehydration cyclization in the presence of a catalyst. The crude product was purified by recrystallization to prepare high-yield, high-purity D,L-lactide.