DL-Lactide DL-Lactide

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

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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

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

Storage method

None

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 D,L-lactide with high yield and high purity.

Purpose

Mainly used in medicine.

This article is from the Internet, does not represent the position of Toluene diisocyanate reproduced please specify the source.https://www.chemicalchem.com/archives/21462

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