aji92 standard
d-serine
appearance |
white odourless crystals having a sweet taste |
solublity |
soluble in water, practically insoluble in absolute alcohol and ether |
identification (by ir ) |
the ir spectrum of the test sample should match with the ir spectrum of the standard sample |
specific rotation (100mg/ml solution in 2n hcl) |
-14.0°~ -15.6° |
heavy metal, as pb |
≤0.0015% |
chloride |
≤0.10% |
loss on drying (at 105℃ for 3 hours) |
≤0.5% w/w |
residue on ignition |
≤0.1% w/w |
assay (by chemical ) |
98.5~101.5% |