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
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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.
Purpose
Mainly used in medicine.
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