China (Mainland) 
|
product name |
l-histidine |
|
brand name |
chenming |
|
country of origin |
china |
|
manufacturer |
luojiang chenming biological co.,ltd |
|
appearance |
white crystalline or crystals powder,slightly bitter taste |
|
cas no. |
71-00-1 |
|
purity |
99% |
|
grade standard |
feed grade,food grade,medicine grade |
|
type |
vitamins, amino acids and coenzymes |
|
usage |
pharmaceutical intermediates/ingredient/raw material |
|
mw |
155.1546 |
|
mf |
c6h9n3o2 |
|
certificate |
aji;usp;ep;coa; iso |
|
shelf life |
24 months |
|
certificate of analysis |
||
|
tests |
limits |
test results |
|
description |
white crystals or crystalline powder |
conforms |
|
assay |
98.5～101.5% |
99.0% |
|
specific rotation[a]d25 |
+12.6°～+14.0° |
+12.7° |
|
chloride(cl) |
≤0.05% |
<0.05% |
|
sulfate(so4) |
≤0.03% |
<0.03% |
|
iron(fe) |
≤30ppm |
<30ppm |
|
heavy metals(pb) |
≤15ppm |
<15ppm |
|
loss on drying |
≤0.20% |
0.16% |
|
residue on ignition |
≤0.40% |
0.087% |
|
chromatographic purity |
conforms |
conforms |
|
organic volatile impurities |
meets the requirements |
conforms |
|
ph |
7.0-8.5 |
7.85 |
