| Melting point | 180-185 °C(lit.) |
| density | 1.18 g/mL at 25 °C(lit.) |
| bulk density | 550-620kg/m3 |
| refractive index | n20/D1.465 |
| storage temp. | room temp |
| solubility | H2O: 6 M, clear, colorless |
| form | Crystals |
| color | White to slightly yellow |
| PH | 4.5-5.5 (100g/l, H2O, 20℃) |
| Odor | Odorless |
| PH Range | 4.5 - 6.0 at 573 g/l at 25 °C |
| biological source | synthetic (organic) |
| Water Solubility | 2280 g/L (20 ºC) |
| Sensitive | Hygroscopic |
| λmax | λ: 260 nm Amax: 0.040 λ: 280 nm Amax: 0.025 |
| Merck | 14,4562 |
| BRN | 3591990 |
| Stability: | Stable. Hygroscopic. Incompatible with strong oxidizing agents. |
| InChIKey | PJJJBBJSCAKJQF-UHFFFAOYSA-N |
| CAS DataBase Reference | 50-01-1(CAS DataBase Reference) |
| EPA Substance Registry System | Guanidine monohydrochloride (50-01-1) |
| Absorption | ≤0.10 at 260nm in H2O at 6M |