L-鹽酸賴氨酸 |
EP6.0 |
AJI92 |
USP40 |
性狀 |
應為白色或類白色結(jié)晶性粉末 |
應為白色粉末 |
--- |
鑒別 |
紅外光吸收圖譜應與對照圖譜一致 |
應符合規(guī)定 |
應符合規(guī)定 |
含量 |
98.5-101.0% |
99.0%-100.5% |
98.5%-101.5% |
PH |
5.0~ 6.0 |
5.0~6.0 |
--- |
透光率 |
--- |
≥98.0% |
--- |
干燥失重 |
≤0.5% |
≤0.40% |
≤0.4% |
熾灼殘渣 |
≤0.1% |
≤0.10% |
≤0. 1% |
含氯量 |
--- |
19.12% ~19.51% |
19.0%-19.6% |
重金屬 |
≤10ppm |
≤10ppm |
≤15ppm |
鐵鹽 |
≤30ppm |
≤10ppm |
≤30ppm |
硫酸鹽 |
≤0.03% |
≤0.020% |
≤0.03% |
砷鹽 |
≤1ppm |
≤1ppm |
--- |
銨鹽 |
≤0.02% |
≤0.02% |
--- |
其他氨基酸 |
應符合規(guī)定 |
應符合規(guī)定 |
應符合規(guī)定 |
熱源 |
--- |
應符合規(guī)定 |
--- |
比旋度 |
+21.0°~ +22.5° |
+20.7°~ +21.5° |
+20.4~+21.4° |
溶液澄清度 |
溶液澄清度:10%的水溶液應澄清 |
--- |
--- |
溶液色級:10%水溶液的顏色不能比參考溶液B7或GY7的顏色更濃 |
--- |
--- |
|
溶解度 |
易溶于水,極微溶于乙醇(96%) |
--- |
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