Molecular Formula: C9H11NO2
CAS: 63-91-2
Properties: achromaticity or white crystal flake and white crystalline powder. Slightly special smell and odorless. Protect from cook, processing and heat. Instability in alkaline. Soluble in water. insoluble in ethanol, dilute inorganic acid and sodium hydroxide solution. Essential amino acid.
Usage: nutritional supplements
Quality Standard: FCCIV
|
Items |
Standard |
|
appearance |
White crystal or crystalline powder |
|
specific rotation |
-33.2°—-35.2° |
|
chlorid(%) |
0.02 max |
|
ammonium salt(%) |
0.02 max |
|
sulfate(%) |
0.02 max |
|
iron(ppm) |
3 max |
|
heavy metal(ppm) |
15 amx |
|
lead(ppm) |
10 max |
|
arsenic(ppm) |
1 max |
|
other amino acids |
a violet spot |
|
drying shrinkage(%) |
0.30 max |
|
ignition residue(%) |
0.10 max |
|
content(%) |
98.5—101.5 |
|
pH value |
5.4—6.0 |
Packaging: 25KG / barrel
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 |
