E34102

(−)-Ethyl L-lactate

98%

• Synonym(s): (−)-Ethyl (S)-2-hydroxypropionate, (S)-(−)-2-Hydroxypropionic acid ethyl ester, L-Lactic acid ethyl ester
• Empirical Formula (Hill Notation): C₅H₁₀O₃
• CAS Number: 687-47-8
• Molecular Weight: 118.13
• Beilstein/REAXYS Number: 1720839
• EC Number: 211-694-1
• MDL number: MFCD00004518
• UNSPSC Code: 12352108
• PubChem Substance ID: 24894514
• NACRES: NA.22

Properties

• vapor density: 4.1 (vs air)
• Quality Level: 200
• vapor pressure: 2 mmHg ( 20 °C); 5 mmHg ( 30 °C)
• assay: 98%
• form: liquid
• optical activity: [α]14/D −10°, neat
• autoignition temp.: 752 °F
• expl. lim.: 1.5 %, 100 °F
• refractive index: n20/D 1.4130 (lit.)
• pH: 4 (20 °C, 50 g/L)
• bp: 154 °C (lit.)
• mp: −26 °C (lit.)
• density: 1.034 g/mL at 20 °C (lit.); 1.042 g/mL at 25 °C
• SMILES string: C[C@H](O)C(OCC)=O
• InChI: 1S/C5H10O3/c1-3-8-5(7)4(2)6/h4,6H,3H2,1-2H3/t4-/m0/s1
• InChI key: LZCLXQDLBQLTDK-BYPYZUCNSA-N

Description

General description

Ethyl lactate is an economically viable green solvent used in organic synthesis. It is generally employed in organic reactions like multi-component reactions, cycloaddition reaction, asymmetric induction, photochemical synthesis, and ligand-free coupling reactions, etc.

Application

(−)-Ethyl L-lactate can be used in the preparation of:

• (R)-(+)-2-methyloxirane.
• (S)-2-((tert-Butyldimethylsilyl)oxy)propanal, a key intermediate for the synthesis of maltepolides.

Safety Information

• pictograms: GHS02,GHS05,GHS07
• signalword: Danger
• hcodes: H226,H318,H335
• pcodes: P210 - P233 - P240 - P241 - P280 - P305 + P351 + P338
• Hazard Classifications: Eye Dam. 1 - Flam. Liq. 3 - STOT SE 3
• target_organs: Respiratory system
• Storage Class: 3 - Flammable liquids
• wgk_germany: WGK 1
• flash_point_f: 128.8 °F - closed cup
• flash_point_c: 53.8 °C - closed cup
• ppe: Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter