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L-Asparagine Monohydrate
产品价格查看更多规格...
| 产品编号 | 包装单位 | 单价(元) | 国内现货 | 国外库存 | 询价单 |
| 4058412 | 100 G | 754 | |||
| 4058412 | 1 KG | 3730 | |||
| 4058412 | 10 KG | 26420 |
产品别名
5794-13-8
L-Asparagine Monohydrate
Asparaginic acid semiamide, Asn
基本信息
| Empirical Formula【经验(实验)分子式】 | C4H8N2O3 · xH2O |
| Molecular weight | 132.12 (anhydrous basis) |
| MDL number | MFCD00151038 |
| EC Index Number【EC索引号】 | 200-735-9 |
| Analysis Note【分析说明】 | Assay (perchloric acid titration, calculated on dried substance): 99.0 - 101.0 % Identity (IR-spectrum): passes test Identity (specific rotation): passes test Appearance: white to almost white crystalline powder or colorless crystals Appearance of solution (20 g/l, CO₂-free water): clear and colorless Spec. rotation (α 20/D, 100 g/l, hydrochloric acid 3 mol/l, calc. on dried substance): +33.7 to +36.0 Chloride (Cl): ≤ 200 ppm Sulfate (SO₄): ≤ 200 ppm As (Arsenic): ≤ 5 ppm Ca (Calcium): ≤ 10 ppm Co (Cobalt): ≤ 5 ppm Fe (Iron): ≤ 5 ppm K (Potassium): ≤ 5 ppm Mg (Magnesium): ≤ 5 ppm Na (Sodium): ≤ 50 ppm Pb (Lead): ≤ 10 ppm Zn (Zinc): ≤ 5 ppm Ninhydrin-positive substances (LC)(Aspartic acid): ≤ 0.5 % Ninhydrin-positive substances (LC)(any other ninhydrin-positive impurity): ≤ 0.3 % Ninhydrin-positive substances (LC) (ammonium (570 nm)): ≤ 0.02 % Ninhydrin-positive substances (LC)(total impurities): ≤ 0.8 % Loss on drying (130 °C, 3 h): 10.5 - 12.5 % |
产品性质
| Quality Level【质量水平】 | 100 |
| pH【pH值(酸碱度)】 | 4.0-5.5 (20 ℃, 20 g/L in H2O) |
| mp | 215-217 ℃ (decomposes) |
| solubility【溶解性】 | 22 g/L |
| bulk density【堆积密度】 | 530 kg/m3 |
| storage temp.【储存温度】 | 2-30℃ |
| InChI | 1S/C4H8N2O3.H2O/c5-2(4(8)9)1-3(6)7;/h2H,1,5H2,(H2,6,7)(H,8,9);1H2/t2-;/m0./s1 |
| InChI key | RBMGJIZCEWRQES-DKWTVANSSA-N |
安全信息
| Storage Class Code【储存分类代码】 | 11 - Combustible Solids |
| WGK | WGK 1 |
