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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

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

H314

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

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
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
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)
View All Related Papers

Protocols

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

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Chromatograms

application for HPLCapplication for HPLC

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