L1250

DL-Lactic acid

Name: <SC>DL</SC>-Lactic acid
Brand: SIGMA

85 % (w/w), syrup

Synonym(s):

milk acid, 2-Hydroxypropionic acid

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All Photos(1)

About This Item

Linear Formula:

CH₃CH(OH)COOH

CAS Number:

50-21-5

Molecular Weight:

90.08

UNSPSC Code:

12352201

NACRES:

NA.25

PubChem Substance ID:

24896274

MDL number:

MFCD00004520

Beilstein/REAXYS Number:

1209341

Product Name

DL-Lactic acid, 85 % (w/w), syrup

InChI

1S/C3H6O3/c1-2(4)3(5)6/h2,4H,1H3,(H,5,6)

SMILES string

CC(O)C(O)=O

InChI key

JVTAAEKCZFNVCJ-UHFFFAOYSA-N

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

Quality Level

200

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Related Categories

Acids

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

GHS05

signalword

Danger

hcodes

H314

pcodes

P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338 - P363 - P405

Hazard Classifications

Eye Dam. 1 - Skin Corr. 1C

supp_hazards

EUH071

Storage Class

8A - Combustible corrosive hazardous materials

wgk

WGK 1

flash_point_f

235.4 °F - closed cup

flash_point_c

113 °C - closed cup

ppe

Eyeshields, Gloves, type ABEK (EN14387) respirator filter

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Recent advances in lactic acid production by microbial fermentation processes.

Mohamed Ali Abdel-Rahman et al.

Biotechnology advances, 31(6), 877-902 (2013-04-30)

Fermentative production of optically pure lactic acid has roused interest among researchers in recent years due to its high potential for applications in a wide range of fields. More specifically, the sharp increase in manufacturing of biodegradable polylactic acid (PLA)

Perspectives on the contribution of lactic acid bacteria to cheese flavor development.

James Steele et al.

Current opinion in biotechnology, 24(2), 135-141 (2013-01-03)

It has been known since the 1960s that lactic acid bacteria are essential for the development of cheese flavor. In the ensuing 50 years significant research has been directed at understanding the microbiology, genetics and biochemistry of this process. This

Cancer-generated lactic acid: a regulatory, immunosuppressive metabolite?

Stephen Yiu Chuen Choi et al.

The Journal of pathology, 230(4), 350-355 (2013-06-05)

The common preference of cancers for lactic acid-generating metabolic energy pathways has led to proposals that their reprogrammed metabolism confers growth advantages such as decreased susceptibility to hypoxic stress. Recent observations, however, suggest that it generates a novel way for

Comparison of biochemical stress indicators in juvenile captive estuarine crocodiles (Crocodylus porosus) following physical restraint or chemical restraint by midazolam injection.

Annabelle Olsson et al.

Journal of wildlife diseases, 49(3), 560-567 (2013-06-20)

Using a prospective, randomized study design we demonstrate that midazolam sedation minimizes acidosis compared with physical restraint in captive juvenile estuarine crocodiles during handling or noninvasive procedures at preferred body temperature. A dose of midazolam (5.0 mg/kg) was administered intramuscularly

Engineering strategies aimed at control of acidification rate of lactic acid bacteria.

Jan Martinussen et al.

Current opinion in biotechnology, 24(2), 124-129 (2012-12-26)

The ability of lactic acid bacteria to produce lactic acid from various sugars plays an important role in food fermentations. Lactic acid is derived from pyruvate, the end product of glycolysis and thus a fast lactic acid production rate requires

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