L1250

DL-Lactic acid

85 % (w/w), syrup

• Synonym(s): milk acid, 2-Hydroxypropionic acid
• Linear Formula: CH₃CH(OH)COOH
• CAS Number: 50-21-5
• Molecular Weight: 90.08
• Beilstein: 1209341
• MDL number: MFCD00004520
• UNSPSC Code: 12352201
• PubChem Substance ID: 24896274
• NACRES: NA.25

Properties

• Assay: ≥85.0% (titration)
• form: syrup
• concentration: 85 % (w/w)
• refractive index: n20/D 1.425 (lit.)
• pKa (25 °C): (1) 3.73, (2) 3.79 (L(+)-isomer)
• bp: 122 °C/15 mmHg (lit.)
• density: 1.209 g/mL at 25 °C (lit.)
• storage temp.: room temp
• SMILES string: CC(O)C(O)=O
• InChI: 1S/C3H6O3/c1-2(4)3(5)6/h2,4H,1H3,(H,5,6)
• InChI key: JVTAAEKCZFNVCJ-UHFFFAOYSA-N

Description

Application

Lactic acid is used as a reagent in organic synthesis (in the manufacture of adhesives). It is used in the leather, textile, and tanning industries. It may be used as a plasticizer, a catalyst, or an acidifying agent. Lactic acid has even been used as a flavoring agent in the manufacture of tobacco products.

Biochem/physiol Actions

In animals, lactic acid is a metabolic compound produced by proliferating cells and during anaerobic conditions such as strenuous exercise. Lactic acid can be oxidized back to pyruvate or converted to glucose via gluconeogenesis. Lactic acid is preferentially metabolized by neurons in several mammal species and during early brain development.

Preparation Note

This product is miscible with water (10% v/v).

Safety Information

• Pictograms: GHS05
• Signal Word: Danger
• Hazard Statements: H314
• Precautionary Statements: P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338 - P363 - P405
• Hazard Classifications: Eye Dam. 1 - Skin Corr. 1C
• Supplementary Hazards: EUH071
• Storage Class Code: 8A - Combustible corrosive hazardous materials
• WGK: WGK 1
• Flash Point(F): 235.4 °F - closed cup
• Flash Point(C): 113 °C - closed cup
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves