20405-64-5
| Name | COPPER(I) SELENIDE |
| CAS | 20405-64-5 |
| EINECS(EC#) | 243-796-7 |
| Molecular Formula | Cu2Se |
| MDL Number | MFCD00049908 |
| Molecular Weight | 206.05 |
| MOL File | 20405-64-5.mol |
Chemical Properties
| Appearance | Dark-blue to black crystalline solid. Soluble in sulfuric acid (sulfur dioxide evolved); also in potassium cyanide solution. |
| Melting point | 1113°C |
| density | 6.84 g/mL at 25 °C(lit.) |
| solubility | insoluble in H2O; soluble in acid solutions |
| form | Pieces |
| color | Dark blue to black |
| Water Solubility | Soluble in hydrochloric acid. Insoluble in water. |
| Merck | 14,2666 |
| Exposure limits | ACGIH: TWA 1 mg/m3; TWA 0.2 mg/m3 NIOSH: IDLH 100 mg/m3; IDLH 1 mg/m3; TWA 1 mg/m3; TWA 0.2 mg/m3 |
| InChI | 1S/2Cu.Se |
| InChIKey | KTLOQXXVQYUCJU-UHFFFAOYSA-N |
| SMILES | [Cu][Se][Cu] |
| EPA Substance Registry System | Copper selenide (Cu2Se) (20405-64-5) |
Safety Data
| Hazard Codes | T,N |
| Risk Statements | |
| Safety Statements | |
| RIDADR | UN 3077 9/PG 3 |
| WGK Germany | 3 |
| TSCA | Yes |
| HazardClass | 6.1(b) |
| PackingGroup | III |
| HS Code | 2921290090 |
| Storage Class | 6.1B - Non-combustible acute toxic Cat. 1 and 2 very toxic hazardous materials |
| Hazard Classifications | Acute Tox. 3 Inhalation Acute Tox. 3 Oral Aquatic Acute 1 Aquatic Chronic 1 STOT RE 2 |