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Dihydrogenwolframat
O2W(OH)2 · ungsticaci · Tunstic acid · TUNGSTIC ACID · Wolframic acid · TungsticAcidGr · TUNGSTIC(VI) ACID · Tungstic acid 99%
Identifikatoren & physikalische Daten
| CAS No. | 7783-03-1 |
|---|---|
| Summenformel | W-H2-O4 |
| Durchschnittliche Molmasse | 249,85 g/mol |
| SMILES | [O]=[W](=[O])([OH])[OH] |
| InChIKey | CMPGARWFYBADJI-UHFFFAOYSA-L |
| PubChem CID | 1152 |
| ChEBI | CHEBI:36272 |
| EC No. | 231-975-2 |
| Lokaler Name | Dihydrogenwolframat |
Chemische & physikalische Eigenschaften
| Polarare Oberfläche (TPSA) | 74,6 |
|---|---|
| H-Brücken-Donoren | 2 |
| H-Brücken-Akzeptoren | 4 |
| Frei drehbare Bindungen | 0 |
| Schwere Atome | 5 |
| Formalladung | 0 |
| Komplexität | 81,3 |
| Stoffklassen | Metals -> Metals, Inorganic Compounds |
| Dichte | 5.5 @25 °C5.5 g/mL at 25 °C (lit.) |
| Schmelzpunkt | 100°C (dec.) |
| Siedepunkt | 1473°C |
| Brechungsindex | 2.24 |
| Flammpunkt | 1473°C |
| Lagerbedingungen | Sealed in dry,Room Temperature |
| Löslichkeit | insoluble in H2O, acid solutionssoluble in alkaline solutions |
| Aggregatzustand | powder |
| Farbe | Yellow to yellow-greenish |
| Wichte | 5.5 |
| Merck | 14,9818 |
| Stabilität | Stable. Incompatible with strong oxidizing agents. |
| InChI | 1S/2H2O.2O.W/h2*1H2/q+2/p-2 |
| InChIKey | CMPGARWFYBADJI-UHFFFAOYSA-L |
| SMILES | O[W](O)(=O)=O |
| CAS Datenbank | 7783-03-1(CAS DataBase Reference) |
| NIST chemische Informationen | Tungstic acid(7783-03-1) |
| EPA chemische Informationen | Tungstate (WO42-), dihydrogen, (T-4)- (7783-03-1) |
Sicherheit & Vorschriften
| GHS-Einstufung | This chemical does not meet GHS hazard criteria for 96.6% (169 of 175) of all reports.Not ClassifiedAggregated GHS information provided per 175 reports by companies from 5 notifications to the ECHA C&L Inventory. |
|---|---|
| Regulatorische Informationen | Chemical: Tungstate (WO42-), dihydrogen, (T-4)-Status: Active Update: 12-04-2023 https://echa.europa.eu/registration-dossier/-/registered-dossier/11633Tungstic acid: Does not have an individual approval but may be used under an appropriate group standard |
| Gefahrenübersicht | A mild eye irritant[RTECS] May cause eye injuryHarmful by ingestion, inhalation, and skin absorption[MP Biomedicals MSDS] See Tungsten. |
| Hazard Classes and Categories | Not Classified |
| Threshold Limit Values (TLV) | 3.0 [mg/m3], as W, respirable particulate matter |
| Protective Action Criteria (PAC) | 14 [mg/m3]150 [mg/m3]900 [mg/m3] |
| Wassergefährdungsklasse (WGK) | 3 |
| TSCA-Inventar-Status | TSCA listed |
| Zollcode | 28259011 |
| RTECS-Nr. | YO7840000 |
| R-Sätze (R) | 36/37/38 |
| Sicherheitshinweise (S) | 24/25 |
| Lagerklasse | 13 - Non Combustible Solids |
| Gefahrenklasse | Eye Irrit. 2Skin Irrit. 2STOT SE 3 |
Anwendungen & Verwendung
Verwenden
Tungstic Acid is used as a starting material in the synthesis of polynanocomposite material and polycrystalline ceramics.