L-天门冬氨酸,L-天门冬氨酸价格,L-天门冬氨酸厂家
标准·Standard
项目·Item
QB1118-91
含量·Content (%)
≥99.0
透光率·Transmittance (%)
≥98.0
比旋光度·Specific Rotatory
+24.8°~+25.8°
PH值·PH
2.5~3.5
干燥失重·Drying Weight Loss(%)
≤0.2
灰分·Ash content(%)
≤0.1
氯化物·Chloride (%)
≤0.02
铁·Iron (PPm)
≤10
铵盐·Ammonium (%)
硫酸盐·Sulphate (%)
重金属·Heavy Matals(PPm)
砷·Arsenium (PPm)
≤1
其它氨基酸·Other Amino-acid
不得检出、None