Molecular Formula: C5H11NO2
CAS: 72-18-4
Properties: white monoclinic or hexagonal crystalline powder, achromaticity Slaty or scaly crystalline when recrystaled in ethanol aqueous. Odorless and special bitter. Melting point is 160℃. The pH value is 5.5-7.0 in 5% aqueous. Stability in heat, air and light. Soluble in water(8.85mg/100mL, 25℃). Insoluble in ethanol and ether. Difficult to isolate from leucine. Essential amino acid.
Usage: nutritional supplements
Application: preduce sesame egg flavor if added into rice pastry; Improve the flavor of bread.
Quality Standard: CP2005 2nd edition
|
Items |
Standard |
|
specific rotation |
+31.5°―+32.2° |
|
chloride(%) |
0.02 max |
|
ammonium salt(%) |
0.02 max |
|
sulfate(%) |
0.02 max |
|
iron(ppm) |
10 max |
|
heavy metal(ppm) |
10 max |
|
arsenic(ppm) |
1 max |
|
other amino acids |
not detected by TLC |
|
drying shrinkage(%) |
0.2 max |
|
ignition residue(%) |
0.1 max |
|
content(%) |
99.0―100.5 |
|
acidity(pH value) |
3.0―3.5 |
Packaging: 25KG / box
Transportation: avoid sun and rain, be transported as general chemicals but with no toxic, hazard materials.
Storage: stored in dry clean dark environment, and not be mixed with toxic substances to avoid contamination. Shelf life: two years |
