L1250

DL-Lactic acid

85 % (w/w), syrup

• Synonyme(s) : milk acid, 2-Hydroxypropionic acid
• Formule linéaire : CH₃CH(OH)COOH
• CAS Number: 50-21-5
• Poids moléculaire : 90.08
• Beilstein: 1209341
• Numéro MDL: MFCD00004520
• Code UNSPSC : 12352201
• ID de substance PubChem : 24896274
• Nomenclature NACRES : NA.25

Propriétés

• Essai: ≥85.0% (titration)
• Niveau de qualité: 200
• Forme: syrup
• Concentration: 85 % (w/w)
• Indice de réfraction: n20/D 1.425 (lit.)
• pKa (25 °C): (1) 3.73, (2) 3.79 (L(+)-isomer)
• pb: 122 °C/15 mmHg (lit.)
• Densité: 1.209 g/mL at 25 °C (lit.)
• Température de stockage: room temp
• Chaîne SMILES: CC(O)C(O)=O
• InChI: 1S/C3H6O3/c1-2(4)3(5)6/h2,4H,1H3,(H,5,6)
• Clé InChI: 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.

Actions biochimiques/physiologiques

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.

Notes préparatoires

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

Informations sur la sécurité

• Pictogrammes: GHS05
• Mention d'avertissement: Danger
• Mentions de danger: H314
• Conseils de prudence: P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338 - P363 - P405
• Classification des risques: Eye Dam. 1 - Skin Corr. 1C
• Risques supp: EUH071
• Code de la classe de stockage: 8A - Combustible corrosive hazardous materials
• Classe de danger pour l'eau (WGK): WGK 1
• Point d'éclair (°F): 235.4 °F - closed cup
• Point d'éclair (°C): 113 °C - closed cup
• Équipement de protection individuelle: Eyeshields, Gloves, type ABEK (EN14387) respirator filter