dl-leucine

structural formula

• numbering system
• physical property data
• toxicological data
• ecological data
• molecular structure data
• computing chemical data
• more
  • properties and stability
  • storage method
  • synthesis method
  • purpose

numbering system

cas number:328-39-2

mdl number:mfcd00063087

einecs number:206-328-2

rtecs number:none

brn number:636005

pubchem id:none

physical property data

一 , physical property data

traits ：white crystal

density (g/ml,25/4℃): 1.293

relative vapor density (g/ml, air=1)：not available

melting point (ºc): 290

boiling point (ºc, normal pressure)��：not available

boiling point (ºc, 5.2kpa): not available

refraction rate: not available

flash point (ºc): not available

optical rotation (º): not available

spontaneous combustion point or ignition temperature (ºc): not available

steam pressure (kpa, 25ºc): not available

saturated vapor pressure (kpa, 60ºc): not available

burn heat (kj/mol):not available

critical temperature (ºc): not available

critical pressure (kpa): not available

oil and water log value of the (octanol/water) partition coefficient:not available

explosion upper limit (%, v/v): not available

explosion lower limit (%, v/v): not available

dissolve sex: solubility in water (g/ l):0℃when it is7.97,25 ℃times9.91,50℃time is14.06,75 ℃when is22.76,100℃times42.06. 90%solubility in ethanol (g/l): 1.3. insoluble in ether.

toxicological data

two , toxicological data:

acute toxicity:not available .

ecological data

three , ecological data:

1 , other harmfuleffect: this substance may be harmful to the environment, and special attention should be paid to water bodies.

molecular structure data

1. molar refractive index: 34.86

2. molar volume (m³/mol）：126.6

3. isotonic specific volume (90.2k):316.4

4. surface tension (dyne/cm):39.0

5. polarizability（10^-24cm³):13.82

compute chemical data

none yet

properties and stability

none yet

storage method

should be sealed and stored in a cool, dry place.

synthesis method

will2-br-4-mix methylvaleric acid and concentrated ammonia and leave at room temperature7d, the crude product obtained by filtration is decolorized and refined to obtain the finished product. yield43-45%.

purpose

for biochemical research, nutritional supplements. span>

none yet

storage method

should be sealed and stored in a cool, dry place.

synthesis method

will2-br-4-mix methylvaleric acid and concentrated ammonia and leave at room temperature7d, the crude product obtained by filtration is decolorized and refined to obtain the finished product. yield43-45%.

purpose

for biochemical research, nutritional supplements. span>