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L6661

Sigma-Aldrich

Lactic acid

meets USP testing specifications

Synonym(s):

DL-Lactic acid, 2-Hydroxypropionic acid

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About This Item

Linear Formula:
CH3CH(OH)COOH
CAS Number:
50-21-5
Molecular Weight:
90.08
Beilstein:
1209341
EC Number:
200-018-0
MDL number:
MFCD00004520
UNSPSC Code:
12352106
PubChem Substance ID:
24896442
NACRES:
NA.25

Agency

USP/NF
meets USP testing specifications

Quality Level

200

Assay

88.0-92.0%

form

viscous liquid

refractive index

n20/D 1.425 (lit.)

pH

2

bp

122 °C/15 mmHg (lit.)

density

1.209 g/mL at 25 °C (lit.)

cation traces

heavy metals: ≤0.001%

application(s)

pharmaceutical (small molecule)

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

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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.

Other Notes

A concentrated solution of lactic acid is typically a mixture of lactic acid lactate and lactic acid. The concentration of this solution is approximately 90% (w/w).

Pictograms

Corrosion
GHS05

Signal Word

Danger

Hazard Statements

H315 - H318

Hazard Classifications

Eye Dam. 1 - Skin Irrit. 2

Storage Class Code

10 - Combustible liquids

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

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Conversion of biomass to 1, 2-propanediol by selective catalytic hydrogenation of lactic acid over silica-supported copper.
Cortright RD, et al.
Applied Catalysis. B, Environmental, 39(4), 353-359 (2002)
A literature review of poly (lactic acid).
Garlotta D.
Journal of Polymers and the Environment, 9(2), 63-84 (2001)
Kwon et al.
Enzyme and microbial technology, 26(2-4), 209-215 (2000-02-26)
Batch fermentation studies were performed to evaluate the potentials of a complex nitrogen source, soybean, as an alternative to yeast extract for the economical production of lactic acid by Lactobacillus rhamnosus. An enzyme-hydrolysate of soybean meal, Soytone, with an adequate
Paula Gaspar et al.
Biotechnology advances, 31(6), 764-788 (2013-04-10)
The lactic acid bacteria (LAB) are a functionally related group of low-GC Gram-positive bacteria known essentially for their roles in bioprocessing of foods and animal feeds. Due to extensive industrial use and enormous economical value, LAB have been intensively studied
Eileen F O' Shea et al.
Current opinion in biotechnology, 24(2), 130-134 (2013-01-23)
Lactic acid bacteria (LAB) produce a wide variety of antimicrobial peptides (bacteriocins) which contribute to the safety and preservation of fermented foods. This review discusses strategies that have been or could be employed to further enhance the commercial application of
View All Related Papers

Protocols

HPLC Analysis of Lactic Acid Enantiomers on Astec CLC-L, Trace Level Detection

Separation of DL-Lactic acid, ~90% (T)

HPLC Analysis of Organic Acids Commonly Found in Wine and Beer on TSKgel® OApak-P and OApak-A

Separation of Pyruvic acid, United States Pharmacopeia (USP) Reference Standard; Tartaric acid, United States Pharmacopeia (USP) Reference Standard; Citric acid, United States Pharmacopeia (USP) Reference Standard; Malic acid, United States Pharmacopeia (USP) Reference Standard; L-Pyroglutamic acid, ≥99.0% (T); Lactic acid, United States Pharmacopeia (USP) Reference Standard; Acetic acid, ≥99.99% trace metals basis; Succinic acid, United States Pharmacopeia (USP) Reference Standard

Chromatograms

application for HPLCapplication for HPLC

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