产品介绍：
产品说明
一般描述
for biochemistry
应用
L-Alanine for biochemistry. CAS 56-41-7, pH 5.5 - 6.5 (100 g/l, H₂O, 20 °C).
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 (25 g/l, water) | clear and not more intense in color than reference solution BY₆ |
| Spec. rotation (α 20/D, 100 g/l, hydrochloric acid 250 g/l, calc. on dried substance) | +13.5 to +15.5 |
| Chloride (Cl) | ≤ 200 ppm |
| Sulfate (SO₄) | ≤ 100 ppm |
| As (Arsenic) | ≤ 5 ppm |
| Ca (Calcium) | ≤ 50 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)(any ninhydrin-positive impurity) | ≤ 0.1 % |
| Ninhydrin-positive substances (LC) (ammonium (570 nm)) | ≤ 0.02 % |
| Ninhydrin-positive substances (LC)(total impurities) | ≤ 0.5 % |
| Loss on drying (105 °C; 3 h) |
≤ 0.2 % |
| ≤ 0.2 % |
基本信息
| 经验(实验)分子式 | C3H7NO2 |
| 分子量 | 89.09 |
| EC索引号 | 200-273-8 |
产品性质
| 质量水平 | 100 |
| 形式 | solid |
| pH值(酸碱度) | 5.5-6.5 (20 ℃, 100 g/L in H2O) |
| mp | 295-297 ℃ (decomposition) |
| 溶解性 | 166.5 g/L |
| 密度 | 1.40 g/cm3 at 20 ℃ |
| 堆积密度 | 660 kg/m3 |
| 储存温度 | 2-30℃ |
| InChI | 1S/C3H7NO2/c1-2(4)3(5)6/h2H,4H2,1H3,(H,5,6) |
| InChI key | QNAYBMKLOCPYGJ-UHFFFAOYSA-N |
安全信息
| 储存分类代码 | 11 - Combustible Solids |
| WGK | WGK 1 |
