Histidine-for biochemistry
ürün Kodu : 104351.0100Sorunuz!
104351.0100
L-Histidine for biochemistry
| Ürün bilgisi | |||
|---|---|---|---|
| Hill Formula | C6H9N3O2 | ||
| HS Code | 2933 29 90 | ||
| EC number | 200-745-3 | ||
| Molar mass | 155.16 g/mol | ||
| CAS number | 71-00-1 | ||
| Kimyasal ve fiziksel veri | |||
|---|---|---|---|
| Solubility | 38.2 g/l (20 °C) | ||
| Melting point | 272 - 273 °C (decomposition) | ||
| Molar mass | 155.16 g/mol | ||
| Bulk density | 430 kg/m3 | ||
| pH value | 7.7 (10 g/l, H2O, 20 °C) | ||
| Güvenlik bilgisi | |||
|---|---|---|---|
| RTECS | MS3070000 | ||
| Storage class | 10 - 13 Other liquids and solids | ||
| WGK | NWG not water endangering | ||
| Toksikolojik veri | |||
|---|---|---|---|
| LD 50 oral | LD50 rat > 5110 mg/kg | ||
| Spesifikasyonlar | |
|---|---|
| Assay (acidimetric, calculated on dried substance) | ≥ 99.0 % |
| Identity (IR-spectrum) | passes test |
| Appearance | black to almost black, fine-crystalline powder or colorless crystals |
| Appearance of solution (0.5 mol/l, hydrochloric acid 1 mol/l) | Clear and colorless. |
| Spec. rotation (α 20/D, 50 g/l, hydrochloric acid 1 mol/l, calc. on dried substance) | +10.5° to +11.5° |
| UV-Absorption - 260 nm, 0.5 mol/l, 1 cm, hydrochloric acid 1 mol/l |
≤ 0.10 |
| - 280 nm, 0.5 mol/l, 1 cm, hydrochloric acid 1 mol/l | ≤ 0.10 |
| Chloride (Cl) | ≤ 0.02 % |
| Sulfate (SO4) | ≤ 0.01 % |
| Heavy metals (as Pb) | ≤ 0.001 % |
| As (Arsenic) | ≤ 0.0005 % |
| Ca (Calcium) | ≤ 0.001 % |
| Co (Cobalt) | ≤ 0.0005 % |
| Fe (Iron) | ≤ 0.0005 % |
| K (Potassium) | ≤ 0.0005 % |
| Mg (Magnesium) | ≤ 0.0005 % |
| Na (Sodium) | ≤ 0.005 % |
| NH4 (Ammonium) | ≤ 0.01 % |
| Zn (Zinc) | ≤ 0.0005 % |
| Foreign amino acids | ≤ 0.3 % |
| Other ninhydrine positive substances | ≤ 0.1 % |
| Loss on drying (105 °C; 3 h) | ≤ 0.3 % |