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Dinatriumselenid
sodic selenium · Selenodisodium · SODIUM SELENIDE · Disodio selenide · disodium selenide · Sodium selenide 95% · disodiummonoselenide · disodium selenium(2-)
Identifikatoren & physikalische Daten
| CAS No. | 1313-85-5 |
|---|---|
| Summenformel | Na2Se |
| Durchschnittliche Molmasse | 124,95 g/mol |
| Monoisotopische Masse | 125,89605986 g/mol |
| SMILES | [Na+].[Na+].[Se-2] |
| InChIKey | VPQBLCVGUWPDHV-UHFFFAOYSA-N |
| PubChem CID | 73973 |
| ChEBI | CHEBI:77773 |
| EC No. | 215-212-0 |
| DTXSID | DTXSID5061661 |
| Lokaler Name | Dinatriumselenid |
Chemische & physikalische Eigenschaften
| Polarare Oberfläche (TPSA) | 0 |
|---|---|
| H-Brücken-Donoren | 0 |
| H-Brücken-Akzeptoren | 1 |
| Frei drehbare Bindungen | 0 |
| Schwere Atome | 3 |
| Formalladung | 0 |
| Komplexität | 0 |
| Stoffklassen | Metals -> Metals, Inorganic Compounds |
| Physical Description | SolidTurns red and deliquesces in air[Merck Index] Gray crystalline powderHygroscopic[Alfa Aesar MSDS] |
| Schmelzpunkt | >875°C |
| Dichte | 2.625 |
| Löslichkeit | Soluble in ethanol and liquid ammonia. Slightly soluble tetrahydrofuran.decomposes in H2O [MER06] |
| Aggregatzustand | Dry Under Argon |
| Farbe | Gray to pink |
| Merck | 14,8672 |
| InChI | 1S/2Na.Se |
| InChIKey | PNCGYTHKTDMKME-UHFFFAOYSA-N |
| SMILES | [Na][Se][Na] |
| EPA chemische Informationen | Sodium selenide (Na2Se) (1313-85-5) |
Sicherheit & Vorschriften
| GHS-Einstufung | DangerH301+H331 (18.3%): Toxic if swallowed or if inhaled [Danger Acute toxicity, oralacute toxicity, inhalation]P260, P261, P264, P270, P271, P273, P301+P316, P304+P340, P316, P319, P321, P330, P391, P403+P233, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 213 reports by companies from 4 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies. |
|---|---|
| Gefahrenübersicht | May be corrosive to skin and eyesHighly toxic by ingestionToxic by inhalationProlonged or repeated exposure may cause organ injury[Alfa Aesar MSDS] See Selenium. |
| Hazard Classes and Categories | Acute Tox. 3 (98.1%) |
| Expositionsschutz und Persönliche Schutzausrüstung | 0.02 [mg/m3], as Se, inhalable fraction[German Research Foundation (DFG)] |
| Threshold Limit Values (TLV) | 0.2 [mg/m3], as Se |
| Permissible Exposure Limit (PEL) | 0.2 [mg/m3], as Se |
| Immediately Dangerous to Life or Health (IDLH) | 1.0 [mg/m3], as Se |
| Unerwünschte Wirkungen | Dermatotoxin - Skin burns. |
| Wassergefährdungsklasse (WGK) | 3 |
| TSCA-Inventar-Status | TSCA listed |
| UN-Transportnummer | UN3134 |
| R-Sätze (R) | 23/25-33-50/53 |
| Gefahrensymbole | T,N |
| Sicherheitshinweise (S) | 20/21-28-45-60-61 |
| Gefahrenklasse | 4.3Acute Tox. 3 InhalationAcute Tox. 3 OralAquatic Acute 1Aquatic Chronic 1STOT RE 2 |
Anwendungen & Verwendung
Verwenden
Sodium selenide is used in paper and pulp industry, for kraft process followed by photographic industry to prevent developer solutions. It finds application as a bleaching agent in textile industry, sulfur dyes and detergents. It is also used to impart color to glass, glazes and enamels. Further, it acts as a decolorizer of glass due to neutralization of greenish tint produced by iron (ferrous) compounds. It plays an important role to prepare organoselenium compounds by reacting with alkyl halides.