L-(-)-Lactide
L-Lactide S
CAS: 4511-42-6
Molecular Formula: C6H8O4
L-(-)-Lactide - Names and Identifiers
| Name | L-Lactide S |
| Synonyms | Lactide L-Lactide L-Lactide S L-(-)-Lactide 3,6-dimethyl-1,4-dioxane-2,5-dione (S,S)-3,6-Dimethyl-1,4-dioxane-2,5-dione (3R,6S)-3,6-dimethyl-1,4-dioxane-2,5-dione (3S)-Cis-3,6-dimethyl-1,4-dioxane-2,5-dione (3S)-cis-3,6-Dimethyl-1,4-dioxane-2,5-dione |
| CAS | 4511-42-6 |
| EINECS | 224-832-0 |
| InChI | InChI=1/C6H8O4/c1-3-5(7)10-4(2)6(8)9-3/h3-4H,1-2H3/t3-,4+ |
| InChIKey | JJTUDXZGHPGLLC-IMJSIDKUSA-N |
L-(-)-Lactide - Physico-chemical Properties
| Molecular Formula | C6H8O4 |
| Molar Mass | 144.13 |
| Density | 1.186g/cm3 |
| Melting Point | 92-98℃ |
| Boling Point | 285.5°C at 760 mmHg |
| Flash Point | 150.6°C |
| Water Solubility | Soluble in chloroform, and methanol. Slightly soluble in benzene. |
| Vapor Presure | 0.0028mmHg at 25°C |
| Appearance | Form Solid color White to Off-White |
| Storage Condition | Room Temprature |
| Stability | Hygroscopic |
| Refractive Index | 1.429 |
| MDL | MFCD00070594 |
| Use | For the synthesis of biodegradable copolymers |
L-(-)-Lactide - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | R36/37 - Irritating to eyes and respiratory system. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. |
| WGK Germany | 3 |
| TSCA | Yes |
| HS Code | 29322090 |
L-(-)-Lactide - Upstream Downstream Industry
| Downstream Products | Ethyl lactate Butyl lactate |
L-(-)-Lactide - Reference
| Reference Show more | Shao P. Synthesis of amino bridged bis-aryloxy rare earth complexes and their catalytic performance in copolymerization of L-lactide with lactone [D]. Soochow University, 2020. |
L-(-)-Lactide - Introduction
L-Lactide S(L-Lactide S) is an organic compound that belongs to one of the stereoisomers of lactic acid. It is a cyclic molecule obtained from the L-Lactide S by dehydration condensation reaction. Its chemical formula is C3H4O3.
L-Lactide S is a colorless crystalline solid at room temperature, soluble in water and organic solvents. It has some special properties, such as biocompatibility, biodegradability and bioactivity. Therefore, L-Lactide S is widely used in the fields of medicine, food, cosmetics and degradable plastics.
There are two main methods for preparing L-Lactide S: one is prepared by fermentation of natural lactic acid, and the other is prepared by synthesis. Fermentation method is the renewable resources (such as corn, cassava, sugar beet, etc.) through fermentation bacteria (such as lactic acid bacteria) to produce lactic acid, and then after refining and polymerization reaction to obtain L-Lactide S. The synthesis method is a chemical synthesis method in which dextrorotatory lactic acid is converted into L-Lactide S through a stereoisomerization reaction.
Safety information on L-Lactide S, which is a low-toxic substance. Under normal use conditions, the L-Lactide S will not cause obvious irritation and harm to the human body. However, excessive exposure can cause irritation to areas such as the eyes, skin, and respiratory tract. Therefore, appropriate protective measures should be taken during operation, such as wearing protective glasses, gloves and masks. At the same time, should be stored in a cool, dry place, away from fire and oxidant.
L-Lactide S is a colorless crystalline solid at room temperature, soluble in water and organic solvents. It has some special properties, such as biocompatibility, biodegradability and bioactivity. Therefore, L-Lactide S is widely used in the fields of medicine, food, cosmetics and degradable plastics.
There are two main methods for preparing L-Lactide S: one is prepared by fermentation of natural lactic acid, and the other is prepared by synthesis. Fermentation method is the renewable resources (such as corn, cassava, sugar beet, etc.) through fermentation bacteria (such as lactic acid bacteria) to produce lactic acid, and then after refining and polymerization reaction to obtain L-Lactide S. The synthesis method is a chemical synthesis method in which dextrorotatory lactic acid is converted into L-Lactide S through a stereoisomerization reaction.
Safety information on L-Lactide S, which is a low-toxic substance. Under normal use conditions, the L-Lactide S will not cause obvious irritation and harm to the human body. However, excessive exposure can cause irritation to areas such as the eyes, skin, and respiratory tract. Therefore, appropriate protective measures should be taken during operation, such as wearing protective glasses, gloves and masks. At the same time, should be stored in a cool, dry place, away from fire and oxidant.
Last Update：2024-04-09 21:54:55
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Downstream Products for L-(-)-Lactide