L-纈氨酸 |
EP6.0 |
AJI92 |
USP40 |
性狀 |
應(yīng)為白色或類白色的結(jié)晶性粉末 |
應(yīng)為白色結(jié)晶或結(jié)晶性粉末 |
--- |
鑒別 |
紅外光吸收圖譜應(yīng)與對照圖譜一致 |
應(yīng)符合規(guī)定 |
應(yīng)符合規(guī)定 |
含量 |
98.5-101.0% |
99.0%~100.5% |
98.5%~101.5% |
PH |
5.5~6.5 |
5.5~6.5 |
5.5~7.0 |
透光率 |
--- |
≥98.0% |
--- |
干燥失重 |
≤0.5% |
≤0.20% |
≤0.3% |
熾灼殘渣 |
≤0.1% |
≤0.10% |
≤0.1% |
氯化物 |
≤0.020% |
≤0.020% |
≤0.05% |
重金屬 |
≤10ppm |
≤10ppm |
≤15ppm |
鐵鹽 |
≤10ppm |
≤10ppm |
≤30ppm |
硫酸鹽 |
≤0.03% |
≤0.020% |
≤0.03% |
細(xì)菌內(nèi)毒素 |
<20EU/g |
--- |
--- |
砷鹽 |
--- |
≤1ppm |
--- |
銨鹽 |
≤0.02% |
≤0.02% |
--- |
其他氨基酸 |
應(yīng)符合規(guī)定 |
應(yīng)符合規(guī)定 |
--- |
熱源 |
--- |
應(yīng)符合規(guī)定 |
--- |
相關(guān)化合物 |
--- |
--- |
應(yīng)符合規(guī)定 |
比旋度 |
﹢26.5°~﹢29.0° |
+27.6°~ +29.0° |
﹢26.6°~﹢28.8° |
溶液澄清度 |
溶液澄清度:2.5%的水溶液應(yīng)澄清 |
--- |
--- |
溶液色級:2.5%的水溶液不應(yīng)比BY6的參比溶液的顏色更深 |
--- |
--- |
|
溶解度 |
溶于水,極微溶于酒精 |
--- |
--- |
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