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A1156950

LacticAcid , 1.00Normal , 50-21-5

Synonym(s):
DL-Lactic acid;2-Hydroxypropionic acid

CAS NO.:50-21-5

Empirical Formula: C3H6O3

Molecular Weight: 90.08

MDL number: MFCD00004520

EINECS: 200-018-0

Pack Size Price Stock Quantity
500ml RMB47.20 In Stock
1L RMB71.20 In Stock
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Update time: 2022-07-08

PRODUCT Properties

Melting point: 18°C
alpha  -0.05 º (c= neat 25 ºC)
Boiling point: 122 °C/15 mmHg (lit.)
Density  1.209 g/mL at 25 °C (lit.)
vapor density  0.62 (vs air)
vapor pressure  19 mm of Hg (@ 20°C)
FEMA  2611 | LACTIC ACID
refractive index  n20/D 1.4262
Flash point: >230 °F
storage temp.  2-8°C
solubility  Miscible with water and with ethanol (96 per cent).
pka 3.08(at 100℃)
form  syrup
color  Colorless to yellow
Specific Gravity 1.209
PH 3.51(1 mM solution);2.96(10 mM solution);2.44(100 mM solution);
Odor at 100.00 %. odorless
Odor Type odorless
Water Solubility  SOLUBLE
Merck  14,5336
JECFA Number 930
BRN  1209341
Dielectric constant 22.0(16℃)
Stability: Stable. Combustible. Incompatible with strong oxidizing agents.
InChIKey JVTAAEKCZFNVCJ-UHFFFAOYSA-N
LogP -0.72

Description and Uses

Lactic acid (2-hydroxypropionic acid, CH3-CHOH-COOH) is the most widely occurring organic acid in nature. Due to its chiral a-carbon atom, lactic acid (LA) has two enantiomeric forms. Of these, L-(+)-lactic acid is more important in food and pharmaceutical industries because humans have only L-lactate dehydrogenase. The chemical behavior of lactic acid is mostly determined by the two functional groups. Besides the acidic character in aqueous medium, the bifunctionality (a terminal carboxylic acid and a hydroxyl group) allows lactic acid molecules to form ‘‘interesters’’ such as the cyclic dimers, the trimers, or longer lactic acid oligomers.
After its first isolation by the Swedish chemist Scheel in 1780 from sour milk, lactic acid has been produced commercially since the 1880s in the United States and later in Europe. Worldwide, lactic acid production was approximately 250,000 metric tons per year in 2012 and is expected to reach 330,000 metric tons by the year 2015, with an average price of 1.25 US$ per kilogram in 2013 (food grade, 80–85 % purity).
Approximately 85 % of the demand for LA is from the food industry. The primary use of lactic acid is as a pH-adjusting agent in the beverage sector and as a preservative in the food industry. It is included in the Generally Recognized as Safe (GRAS) by the U.S. Food and Drug Administration [158] as a food ingredient and was deemed safe by the European Food Safety Authority as well [159]. The acceptable daily intake for LA was defined by the Joint FAO/WHO Expert Committee on Food Additives as ‘‘not limited,’’ and it is also supported by the Scientific Committee of Food.
In recent decades, the consumption of lactic acid due to its novel applications has grown quite rapidly, by 19 % per year. Nonfood use of lactic acid for polymer production contributes to this growth. Biodegradable polylactic acid is considered to be an environmentally friendly alternative to other plastics from petroleum. It is used in various fields, including drug delivery systems, medical devices, fibers, and packaging materials.
Lactic acid can be produced via chemical synthesis or carbohydrate fermentation. The chemical route has various issues, including toxic raw materials, low conversion rates, and especially the inability to produce the optically pure isomer. Therefore, approximately 90 % of lactic acid worldwide is produced by biotechnological processes, namely fermentations using renewable resources, which is relatively fast, economical, and able to supply selectively one or two stereoisomers of lactic acid.

Prostaglandin E1 analogue

Safety

Symbol(GHS) 
GHS05
Signal word  Danger
Hazard statements  H315-H318
Precautionary statements  P264-P280-P302+P352-P305+P351+P338-P332+P313-P362+P364
Hazard Codes  Xi,C
Risk Statements  38-41-34-37/38
Safety Statements  26-39-45-36/37/39
RIDADR  3265
WGK Germany  2
RTECS  OD2800000
3
TSCA  Yes
HazardClass  8
PackingGroup  III
HS Code  29181100

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