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L1250

Sigma-Aldrich

DL-Lactic acid

85 % (w/w), syrup

Synonym(s):

milk acid, 2-Hydroxypropionic acid

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About This Item

Linear Formula:
CH3CH(OH)COOH
CAS Number:
Molecular Weight:
90.08
Beilstein:
1209341
MDL number:
UNSPSC Code:
12352201
PubChem Substance ID:
NACRES:
NA.25
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Assay

≥85.0% (titration)

Quality Level

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

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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).

Pictograms

Corrosion

Signal Word

Danger

Hazard Statements

Hazard Classifications

Eye Dam. 1 - Skin Corr. 1C

Supplementary Hazards

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

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