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| White rhombic crystals (precipitated from water, containing 2 molecules of crystalline water) or monoclinic plate-like crystals (without crystalline water), odorless, bitter taste; highly soluble in water (solubility in water at 0°C is 83 g/L, solubility in water at 50°C is 400 g/L), slightly soluble in ethanol, insoluble in ether; pI 6.0; When heated to 105°C, it loses two molecules of crystalline water; at 30°C, the color darkens; decomposition point is 244°C; specific rotation [α]20D +12.5° (0.5–2.0 mg/mL, H₂O), [α]20D +27.3° (0.5–2.0 mg/mL, 6 mol/L HCl); The aqueous solution has a maximum absorption at 205 nm (ε = 3.28 at 1 g). | |||||||||
74-79-3
Boss Chemical
74-79-3
| L(+)-Arginine Basic information | |
| Product Name: | L(+)-Arginine |
| CAS: | 74-79-3 |
| MF: | C6H14N4O2 |
| MW: | 174.2 |
| EINECS: | 200-811-1 |
| Mol File: | 74-79-3.mol |
| L(+)-Arginine Chemical Properties | |
| Melting point | 222 °C (dec.) (lit.) |
| alpha | 27.1 º (c=8, 6N HCl) |
| Boiling point | 305.18°C (rough estimate) |
| bulk density | 640kg/m3 |
| density | 1.2297 (rough estimate) |
| FEMA | 3819 | L-ARGININE |
| refractive index | 27 ° (C=8, 6mol/L HCl) |
| storage temp. | 2-8°C |
| solubility | H2O: 100 mg/mL |
| pka | 1.82, 8.99, 12.5(at 25℃) |
| form | powder |
| color | white |
| PH | 10.5-12.0 (25℃, 0.5M in H2O) |
| PH Range | 10.5 - 12 |
| Odor | Faint |
| Odor Type | bland |
| optical activity | [α]20/D +27°, c = 8 in 6 M HCl |
| biological source | synthetic |
| Water Solubility | 148.7 g/L (20 ºC) |
| λmax | λ: 260 nm Amax: ≤0.2 |
| λ: 280 nm Amax: ≤0.1 | |
| Sensitive | Air Sensitive |
| Merck | 14,780 |
| JECFA Number | 1438 |
| BRN | 1725413 |
| Specific Activity | 1035-1401nmol/min·mg |
| Stability: | Stable. Incompatible with strong oxidizing agents. |
| InChIKey | ODKSFYDXXFIFQN-BYPYZUCNSA-N |
| LogP | -4.2 |
| CAS DataBase Reference | 74-79-3(CAS DataBase Reference) |
| NIST Chemistry Reference | L-Arginine(74-79-3) |
| EPA Substance Registry System | L-Arginine (74-79-3) |
