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Dicesiumchromat
Caesiumchromate · CESIUM CHROMATE · dicesium chromate · Cesium chromate(VI) · Chromicacid,dicesiumsalt · CHROMIC ACID CESIUM SALT · Chromicacid(H2CrO4)dicesiumsalt · chromicacid(h2cro4),dicesiumsalt
Identifikatoren & physikalische Daten
| CAS No. | 13454-78-9 |
|---|---|
| Summenformel | CrCs2O4 |
| Durchschnittliche Molmasse | 381,805 g/mol |
| Monoisotopische Masse | 381,73106978 g/mol |
| SMILES | [Cs+].[Cs+].[O]=[Cr](=[O])([O-])[O-] |
| InChIKey | BROHICCPQMHYFY-UHFFFAOYSA-N |
| PubChem CID | 61613 |
| EC No. | 236-640-4 |
| DTXSID | DTXSID20894903 |
| Lokaler Name | Dicesiumchromat |
Chemische & physikalische Eigenschaften
| Polarare Oberfläche (TPSA) | 80,3 |
|---|---|
| H-Brücken-Donoren | 0 |
| H-Brücken-Akzeptoren | 4 |
| Frei drehbare Bindungen | 0 |
| Schwere Atome | 7 |
| Formalladung | 0 |
| Komplexität | 62,2 |
| Stoffklassen | Metals -> Chromium Compounds, Inorganic |
| Physical Description | Yellow odorless powderSoluble in water[MSDSonline] |
| Aggregatzustand | Powder |
| Löslichkeit | Soluble in water. |
| InChI | 1S/Cr.2Cs.4O/q2*+12*-1 |
| InChIKey | BROHICCPQMHYFY-UHFFFAOYSA-N |
| SMILES | [Cs+].[Cs+].[O-][Cr]([O-])(=O)=O |
| CAS Datenbank | 13454-78-9(CAS DataBase Reference) |
| EPA chemische Informationen | Chromic acid (H2CrO4), dicesium salt (13454-78-9) |
Sicherheit & Vorschriften
| GHS-Einstufung | DangerH272 (94.4%): May intensify fireoxidizer [Danger Oxidizing liquidsOxidizing solids]P203, P210, P220, P261, P264, P264+P265, P271, P272, P273, P280, P302+P352, P304+P340, P305+P351+P338, P318, P319, P321, P332+P317, P333+P317, P337+P317, P362+P364, P370+P378, P391, P403+P233, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 72 reports by companies from 5 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.H272 (88.4%): May intensify fire |
|---|---|
| Gefahrenübersicht | CrVI compounds are irritants, sensitizers, and may be corrosive to the skin. CrVI compounds are respiratory tract irritants and may cause pulmonary sensitization. CrVI may cause acute tubular necrosis and liver injury. [ATSDR Case Studies] May cause fire in contact with combustible materialA corrosive substance that can cause injury to the skin, eyes, and respiratory tractMay cause skin sensitization[MSDSonline] See Chromium and linked occupational diseases. |
| Hazard Classes and Categories | Ox. Sol. 2 (94.4%)Ox. Sol. 2 (88.4%) |
| Expositionsschutz und Persönliche Schutzausrüstung | Biological Exposure Indices (BEI) [ACGIH] - For chromium (VI), water-soluble fume: Total Cr in urine = 10 ug/L (increase during shift) or 25 ug/L (end of shift at end of workweek) |
| Minimum Risk Level | Intermediate Oral: 0.005 mg/kg/day (L134) Chronic Oral: 0.001 mg/kg/day (L134) |
| Threshold Limit Values (TLV) | 0.0002 [mg/m3], as Cr(VI), inhalable particulate matter0.0005 [mg/m3], as Cr(VI), inhalable particulate matter |
| Permissible Exposure Limit (PEL) | 0.005 [mg/m3], as Cr(VI) |
| Treatment | There is no know antidote for chromium poisoning. Exposure is usually handled with symptomatic treatment. (L16) |
| Gesundheitliche Auswirkungen | Hexavalent chromium is a known carcinogen. Chronic inhalation especially has been linked to lung cancer. Hexavalent chromium has also been know to cause reproductive and developmental defects. (A12) |
Anwendungen & Verwendung
Verwenden
Cesium chromate is used to produce cesium vapor by reaction with silicon, boron, or titanium, which is used in the final stages of creating vacuum tubes. It is used in the production of photo-tubes.