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Dinatriumsulfid
SODIUM SULPHIDE · Disodium sulfide · disodium sulphide · sodiumsulfuret · sodiumsulfide(na2s) · Sodium sulfide solid · sodiumsulphide,anhydrous · sodiumsulfide(anhydrous)
Identifikatoren & physikalische Daten
| CAS No. | 1313-82-2 |
|---|---|
| Summenformel | Na2S |
| Durchschnittliche Molmasse | 78,05 g/mol |
| Monoisotopische Masse | 77,95160956 g/mol |
| SMILES | [Na+].[Na+].[S-2] |
| InChIKey | GRVFOGOEDUUMBP-UHFFFAOYSA-N |
| PubChem CID | 14804 |
| ChEMBL | CHEMBL2107611 |
| ChEBI | CHEBI:76208 |
| DTXSID | DTXSID0029636 |
| Lokaler Name | Dinatriumsulfid |
Chemische & physikalische Eigenschaften
| Polarare Oberfläche (TPSA) | 1 |
|---|---|
| H-Brücken-Donoren | 0 |
| H-Brücken-Akzeptoren | 1 |
| Frei drehbare Bindungen | 0 |
| Schwere Atome | 3 |
| Formalladung | 0 |
| Komplexität | 0 |
| Stoffklassen | Other Classes -> Sulfur CompoundsCorrosives |
| pH | AQ SOLN ARE STRONGLY ALKALINE |
| SpringerMaterials Properties | enthalpy |
| LogP (Verteilungskoeffizient) | -3.5 |
| Geruch | Rotten eggs |
| Lebensmittelzusatzstoffe | Use unspecified -> FDA Substance added to food |
| Dichte | 1.856 at 68 °F (USCG, 1999) - Denser than waterwill sink1.856 @ 14 °C/4 °C1.86 g/cm³1.856 @25 °C1.86 g/mL at 25 °C(lit.) |
| Color/Form | CLEAR CRYSTALSYELLOW OR BRICK-RED LUMPS OR FLAKESCUBIC CRYSTALS OR GRANULESAMORPHOUS, YELLOW-PINK OR WHITE CRYSTALSYellow or brick-red lumps or flakes or deliquescent crystals.White to pink, crystalline solid. |
| Löslichkeit | Slightly soluble in alcoholinsoluble in ether.Solubility in water (g/100 g water): 8.1 (-9.0 °C)12.4 (0 °C)18.6 (20 °C)29.0 (40 °C)35.7 (48 °C)39.0 (50 °C).H2O: 0.1 g/mL, clear, colorless186 g/L (20 ºC) |
| Siedepunkt | Very high (USCG, 1999) |
| Decomposition | When heated to decomp ... emits toxic fumes of /sulfur oxides and disodium oxide/.920-950 °C |
| Schmelzpunkt | 1180 °C (IN VACUO)1172 °C950 °C(lit.) |
| Lagerbedingungen | Refrigerator (+4°C) |
| Aggregatzustand | flakes |
| Farbe | Yellow |
| Wichte | 1.856 |
| Geruch | Rotten egg odor |
| Merck | 14,8681 |
| Dielektrizitätskonstante | 5.0(Ambient) |
| Stabilität | Spontaneously flammable. Incompatible with acids, metals, oxidizing agents. Contact with acid liberates toxic gas. Fine dust/air mixtures are explosive. Hygroscopic. |
| Kosmetik-Inhaltsstoffe Funktionen | DEPILATORY |
| InChI | 1S/2Na.S |
| InChIKey | CXPWOVUZRAFMDA-UHFFFAOYSA-N |
| SMILES | [Na]S[Na] |
| CAS Datenbank | 1313-82-2(CAS DataBase Reference) |
| NIST chemische Informationen | Sodium sulfide(1313-82-2) |
| EPA chemische Informationen | Sodium sulfide (1313-82-2) |
Sicherheit & Vorschriften
| GHS-Einstufung | DangerH302: Harmful if swallowed [Warning Acute toxicity, oral]P260, P262, P264, P270, P273, P280, P301+P317, P301+P330+P331, P302+P352, P302+P361+P354, P304+P340, P305+P354+P338, P316, P321, P330, P361+P364, P363, P391, P405, and P501 (click each P-code to see the statement) |
|---|---|
| Regulatorische Informationen | The New Jersey Worker and Community Right to Know Act requires public and private employers to provide information about hazardous substances at their workplaces. (N.J.S.A. 34:5A-1 et. seq.) |
| DOT-Kennzeichnung | Spontaneously Combustible |
| Brandgefahren | Special Hazards of Combustion Products: Irritating sulfur dioxide is produced in fire. (USCG, 1999)· Combustible material: may burn but does not ignite readily.· Flammable/combustible material.Combustible. Gives off irritating or toxic fumes (or gases) in a fire. |
| Brandpotenzial | MOIST SODIUM SULFIDE IS SPONTANEOUSLY FLAMMABLE UPON DRYING IN AIR.Combustible solid. |
| Gesundheitsgefahren | Caustic action on skin and eyes. If ingested may liberate hydrogen sulfide in stomach. (USCG, 1999)· TOXIC and/or CORROSIVEinhalation, ingestion or skin contact with material may cause severe injury or death.· Fire will produce irritating, corrosive and/or toxic gases. |
| Gefahrenübersicht | Hydrogen sulfide released slowly when exposed to moist air and rapidly when exposed to acidsSulfur oxides and hydrogen sulfide may be generated during a fireCorrosive to the eyes and skin[CHEMINFO] CorrosiveInhalation of high concentration can cause chemical pneumonitis[MSDSonline] See Hydrogen sulfide. |
| DOT-Nummer und Handbuch | 1849 1531385 135 |
| Reaktive Gruppe | Sulfides, Inorganic |
| EG-Einstufung | Symbol: C, N |
Anwendungen & Verwendung
Verwenden
These yellow flakes were made by fusing sodium carbonate with sulfur. Soluble in water but less so in alcohol, sodium sulfide was lovingly called “stink” by those who used it for toning prints or intensifying negatives because of its sulfurous smell.
Herstellung & Synthese
synthetische
Sodium sulfide is prepared by heating sodium bisulfate with sodium chloride and coal above 950°C. The product mixture is extracted with water and the hydrated sulfide is obtained from the solution by crystallization: NaHSO4 + NaCl + 2C → Na2S + 2CO2↑ + HCl↑Sodium sulfide also is produced from its elements in liquid ammonia: Na + 2S → Na2S.