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| L-Lactide Basic information |
| Product Name: | L-Lactide | | Synonyms: | L-3,6-Dimethyl-1,4-dioxane-2,5-dione;1,4-Dioxane-2,5-dione, 3,6-dimethyl-, (3S,6S)-;3,6-dimethyl-1,4-dioxane-2,5-quinone;actide;L-(-)-LACTIDE 98+%;3,6-Dimethyl-2,5-p-dioxanedione;L-(-)-Lactide ,99%;L,L-Dilactide | | CAS: | 4511-42-6 | | MF: | C6H8O4 | | MW: | 144.13 | | EINECS: | 224-832-0 | | Product Categories: | Chiral Building Blocks;Dioxanes;Dioxanes & Dioxolanes;Functional Materials;Glycidyl Compounds, etc. (Chiral);Lactones & Lactides (for High-Performance Polymer Research);Reagent for High-Performance Polymer Research;Synthetic Organic Chemistry;4511-42-6 | | Mol File: | 4511-42-6.mol |
| L-Lactide Chemical Properties |
| Melting point | 92-94 °C(lit.) | | Boiling point | 255°C | | density | 1.186±0.06 g/cm3(Predicted) | | vapor pressure | 0.311Pa at 25℃ | | refractive index | 1.4475 | | storage temp. | 2-8°C | | solubility | Soluble in chloroform, and methanol. Slightly soluble in benzene. | | form | Solid | | color | White to Off-White | | optical activity | [α]20/D 285°, c = 1 in toluene | | Water Solubility | 16.7g/L at 20℃ | | Sensitive | Moisture Sensitive | | BRN | 82124 | | Stability: | Hygroscopic | | InChIKey | JJTUDXZGHPGLLC-IMJSIDKUSA-N | | LogP | 0.4 at 25℃ | | CAS DataBase Reference | 4511-42-6(CAS DataBase Reference) | | EPA Substance Registry System | 1,4-Dioxane-2,5-dione, 3,6-dimethyl-, (3S,6S)- (4511-42-6) |
| Hazard Codes | Xi | | Risk Statements | 36/37/38-36 | | Safety Statements | 26-37/39 | | WGK Germany | 3 | | TSCA | Yes | | HS Code | 29322090 |
| L-Lactide Usage And Synthesis |
| Chemical Properties | White crystal | | Uses | (3S)-cis-3,6-Dimethyl-1,4-dioxane-2,5-dione may be used in the synthesis of optically active terpyridine containing poly(L-lactide)s, polydisperse lactic acid oligomers, bicyclic and tricyclic lactide derivatives. | | Flammability and Explosibility | Nonflammable | | Purification Methods | This is the cyclic dilactone of lactic acid. The (±)-cis-racemate has been distilled with b 142o/8mm; the distillate which solidifies gives yellow needles on recrystallisation from EtOH with m 128o, from Et2O with m 129o, or CHCl3 with m 126o , 1720-1740 cm-1. It hydrolyses in cold max H2O. [Carothers et al. J Am Chem Soc 54 772 1932]. A trans-form (probably RS,SR) has been reported which crystallises from Et2O with m 42-43o [Hummel et al. Acta Cryst (Sect B) 38 1679 1982]. The R,R -(+)-lactide has b 150o/2mm and crystallises from Et2O with m 95o , or m 96.5 -97.5o (from CHCl3) or m 97.7o (from EtOAc) and [] D +297o (c 1.2, *C6H6). The S,S-(-)-lactide has b 150o/2.5mm and crystallises from EtOAc with m 98.7o, or m 95o (from CHCl3) or m 96.5-97.5o (from CCl4) and []D -297o (c 1.2, *C6H6). [Toniolo et al. J Org Chem 35 6 1970, Beilstein 19 H 154, 19 I 179, 19 II 176, 19 IV 1927, 19/5 V 10.] |
| L-Lactide Preparation Products And Raw materials |
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