DL-Leucine Chemical Properties

Melting point:

293-296 °C (subl.) (lit.)

alpha 

[α]D20 -3.0～+3.0゜ (c=4, HCl)

Boiling point:

225.8±23.0 °C(Predicted)

Density 

1,293 g/cm³

refractive index 

1.4630 (estimate)

storage temp. 

Keep in dark place,Inert atmosphere,Room temperature

solubility 

1 M HCl: soluble

form 

Fine Crystalline Powder

pka

pKa: 9.744(25°C)

color 

White

Odor

wh. sm. cryst. or cryst. powd., odorless, sl. bitter taste

Water Solubility 

soluble

Merck 

14,5451

BRN 

636005

Stability:

Stable. Incompatible with strong oxidizing agents.

LogP

0.799 (est)

CAS DataBase Reference

328-39-2(CAS DataBase Reference)

NIST Chemistry Reference

DL-Leucine(328-39-2)

EPA Substance Registry System

Leucine (328-39-2)

Safety Information

Hazard Codes 

Xn

Safety Statements 

22-24/25-36

WGK Germany 

3

TSCA 

Yes

HS Code 

29224995

MSDS

• Language:English Provider:DL-2-Amino-4-methylpentanoic acid
• Language:English Provider:ACROS
• Language:English Provider:SigmaAldrich
• Language:English Provider:ALFA

DL-Leucine Usage And Synthesis

Chemical Properties

White crystalline powder

Uses

DL-Leucine is a racemic mixture of the D- and L- enantiomers of Leucine. DL-Leucine is used to form benzimidazole and pyrimidine hydroxy azo dyes with various transition metals. DL-Leucine may be used for the evaluation of chiral amino acid separation techniques.

DL-Leucine is used for the following applications:

• Used as a standard for the measurement of free amino acids
• Used in the process of tritiated leucine uptake
• Used in solution preparation (various organics were used in different combinations and concentrations to model complex surface tension effects, DL-Leucine is one of them). It is chosen due to its presence in atmospheric aerosols and ice nucleation activity as well as for its surfactant character

Definition

ChEBI: A branched-chain amino acid that consists of glycine in which one of the hydrogens attached to the alpha-carbon is substituted by an isobutyl group.

DL-Leucine(328-39-2)Related Product Information

• L-Leucine
• DL-Ornithine hydrochloride
• DL-Homoserine
• DL-Histidine
• DL-Pyroglutamic acid
• DL-Arginine hydrochloride monohydrate
• DL-Cysteine
• DL-tert-Leucine
• allo-DL-Threonine
• 2-amino-3-(1H-indol-3-yl)propanamide
• 4-HYDROXYMANDELIC ACID MONOHYDRATE
• DL-Cysteine hydrochloride
• DL-Glutamine
• N-Cbz-L-Leucine
• DL-2-AMINO-3-METHYLPENTANOIC ACID
• GLYCYL-DL-LEUCINE
• Ammonia
• 4-Methylvaleric acid