| 详细说明 |
|
|
| 品牌：同晟 | 产地：本地 | | 价格：1人民币/公斤 | 规格：完善 | 简要说明： 同晟牌的乙酰谷氨酸1188-37-0产品：估价：1，规格：完善，产品系列编号：齐全 | |  | | | 详细介绍：
|
Item
|
Standard
|
Analysis data
|
|
Appearance
|
White crystals or crystalline powder
|
conforms
|
|
Specific rotation[α]20/D
(C=2,H2O)
|
-14.0°to-17.0°
|
-14.56°
|
|
Transmittance
|
Not less than 95.0%
|
98.1%
|
|
Heavy metal(Pb)
|
Not more than 20ppm
|
<10ppm
|
|
Iron (Fe)
|
Not more than 10ppm
|
8ppm
|
|
Arsenic(As2O3)
|
Not more than 2ppm
|
<2ppm
|
|
Chloride (Cl)
|
Not more than 0.020%
|
0.01%
|
|
Sulfate (SO4)
|
Not more than 0.10%
|
0.005%
|
|
Other amino acids
|
Chromatographically not detectable
|
conforms
|
|
Loss on drying
|
Not more than 0.50%
|
0.18%
|
|
Residue on ignition
|
Not more than 0.30%
|
conforms
|
|
Assay
|
98.0to102.0%
|
99.0%
|
|
pH
|
1.7to2.8
|
2.2
|
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