USD $6.00-9.00 / Gram
USD $5.00-10.00 / Gram
USD $6.00-9.00 / Gram
USD $6.00-9.00 / Gram
USD $5.00-10.00 / Gram
USD $6.00-9.00 / Gram
USD $5.00-10.00 / Gram
USD $5.00-10.00 / Gram
USD $5.00-10.00 / Gram
item | specifications (usp) | specifications (aji) |
description | white crystals or crystalline powder | white crystals or crystalline powder |
identification | infrared absorption spectrum | infrared absorption spectrum |
specific rotation [a]d20° |
+26.3 °- +27.7° | +26.9 °- +27.9° |
state of solution /transmittance |
--- | ≥ 98.0% |
chloride (cl) | ≤ 0.05% | ≤ 0.020% |
ammonium (nh4) | --- | ≤ 0.02% |
sulfate (so4) | ≤ 0.03% | ≤ 0.020% |
iron (fe) | ≤ 0.003% | ≤ 10ppm |
heavy metals (pb) | ≤ 0.0015% | ≤ 10ppm |
arsenic (as2o3) | --- | ≤ 1ppm |
other amino acids | --- | chromatographically not detectable |
loss on drying | ≤ 0.5% | ≤ 0.5% |
residue on ignition (sulfated) |
≤ 0.3% | ≤ 0.10% |
assay | 98.5-101.5% | 99.0 - 101.0% |
ph | --- | 10.5-12.0 |
organic volatile impurities | meets the requirements | --- |