(S)-(+)-lactic acid, CAS No. 79-33-4

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79-33-4

Catalog No. EBD2205056

CAS 79-33-4

Name (S)-(+)-lactic acid

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Basic Information

Synonyms: L(+)-Lacticacid L(+)-Lacticacidsolution L-Lacticacid,freeacid lactatestandard40mg/dl L(+)lacticacidfreeacidsigmaultra L-Lacticacid (S)-2-Hydroxypropionicacid (S)-(+)-lacticacid

Molecular Formula: C3H6O3

Molecular Weight: 9008.0

MDL Number: MFCD00064266

Categories: Synthetic Chemistry > Organic Building Blocks > Carboxylic Acids and Esters Synthetic Chemistry > Organic Building Blocks > Phenols and Ethers

Product Description:

(S)-(+)-lactic acid, also known as L-lactic acid, is a naturally occurring organic acid with the molecular formula C_H_O_. It is the biologically active enantiomer of lactic acid, featuring a chiral center at the alpha carbon. This compound is a colorless to slightly yellow hygroscopic liquid or crystalline solid, highly soluble in water and ethanol. Its primary application is as an acidulant and preservative in the food and beverage industry, where it is widely used to adjust pH, enhance flavor, and inhibit microbial growth. In the pharmaceutical sector, L-lactic acid serves as a key component in parenteral nutrition solutions, as a solvent for certain drug formulations, and as a monomer for the production of biocompatible and biodegradable polymers like poly(L-lactic acid) (PLLA) used in medical implants and drug delivery systems. Additionally, L-lactic acid is a fundamental building block in the cosmetic industry for pH regulation and as a humectant. It is also utilized in the production of biodegradable plastics and as a starting material for various chemical syntheses. The compound is generally recognized as safe (GRAS) by regulatory authorities for its intended uses.

Physical Properties

Melting Point: 52-54°C

Boiling Point: 125 °C

Flash Point: 110 °C

Density: 1.206 g/mL at 25 °C

Solubility: 10 mg/mL, clear, colorless in water

Refractivity: n20/D 1.427

Storage: 2-8°C

Analytical Data

Appearance: crystalline solid