USD $8.20-8.80 / Kilogram
USD $1.00-10.00 / Kilogram
USD $1.00-10.00 / Kilogram
aji/usp standard
l-glutamic acid
appearance |
white crystal or crystalline powder |
specific optical rotation |
+31.5°~ +32.5° |
chloride |
≤0.02% |
ammonium (nh4) |
≤0.02% |
sulfate(so4) |
≤0.02% |
iron(fe) |
≤10ppm |
heavy metal(pb) |
≤10ppm |
arsenic(as2o3) |
≤1.0ppm |
other amino acids |
chromatographically not detected |
loss on drying |
≤0.2% |
residue on ignition |
≤0.1% |
ph |
3.0~3.5 |
assay(on dry basis) |
99.0~105.0% |