Lactic acid CAS 50-21-5

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Chemical Name: Lactic acid
CAS No.: 50-21-5
Molecular Fomula: C3H6O3
Molecular weight: 90.08
Appearance: Colorless to yellow syrup
Sample: Available

Lactic acid CAS 50-21-5

Description of Lactic acid

Purac is an organic compound with the formula CH3CH(OH)CO2H. In its solid state, it is white and water-soluble. In its liquid state, it is clear. It is produced both naturally and synthetically. With a hydroxyl group adjacent to the carboxyl group, lactic acid is classified as an alpha-hydroxy acid (AHA). In the form of its conjugate base called lactate, it plays a role in several biochemical processes.

Basic Info of Lactic acid

Chemical Name

2-hydroxypropanoic acid

Synonyms

Purac;DL-Purac;1H-Pyrrolo[2,3-b]pyridine-3-acetic acid, 5-bromo-a-oxo-;Purac;

CAS No.

50-21-5

Molecular Formula

C3H6O3

Molecular Weight

90.07790

PSA

57.53000

LogP

-0.54820

Safety Info

RTECS

OD2800000

Hazard Class

8

Safety Statements

26-39-45-36/37/39

HS Code

2918110000

WGK Germany

2

Packing Group

III

RIDADR

UN 1760

Risk Statements

R34; R38; R41

Hazard Codes

Xi; C

Signal Word

Danger

Hazard Declaration

H315; H318

Caution Statement

P280; P305 + P351 + P338

Symbol

GHS05

Properties

Appearance & Physical State

colourless to yellow liquid

Density

1.276 g/cm3

Boiling Point

227.6ºC at 760 mmHg

Melting Point

18ºC

Flash Point

109.9ºC

Refractive Index

1.4252-1.4272

Stability

Stable. Combustible. Incompatible with strong oxidizing agents.

Storage Condition

2-8ºC

Numbering system

MDL number

MFCD00004520

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What is Lactic acid?

     With the progress of science and technology and the development of society, chemical products have invariably permeated our daily lives, in medicine, food, cosmetics, electronics, industry, and other areas, becoming an essential part of our lives. One such product is Lactic acid which has developed particularly rapidly in recent years. Do you know about Lactic acid?

The official answer: 

  • Purac is an important organic acid, the second organic acid after citric acid in terms of production and consumption, and some information shows that the consumption of lactic acid accounts for about 15% of the total consumption of organic acids. In recent years, the demand for L-lactic acid is expected to grow at a significant rate due to the expansion of its use in biodegradable plastics, and some predict that it may catch up with or surpass citric acid in a few years’ time.
  • Purac is widely found in nature and is found in living organisms. Lactic acid, also known as 2Chemicalbook-hydroxypropionic acid and alpha-hydroxypropionic acid, has an asymmetric carbon atom in its molecular structure, forming two optical isomers, the d-body, the l-body and the racemic dl-body, with a total of three optical isomers. The dextro- and racemic forms are found in human and animal tissues, while the levulinic form is a normal mammalian metabolite. 

What’s the application of Lactic acid?

Purac, lactates and their derivatives, are widely used in food, medicine, feed and chemical industry. Due to its soft and stable acidity, lactic acid contributes to the flavour of foods and is widely used in the food industry as an acidulant, preservative and reducing agent. It can be used in the production of refreshing beverages, sweets and pastries, as well as in the processing and preservation of fish, meat and vegetables. Compared to edible acids such as citric and malic acid, it is highly competitive. In the USA, Purac is used in soft drinks, largely replacing citric acid and phosphoric acid. 

Conclusion

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